Cushioning components
Adjustable or self-adjusting
With linear or progressive characteristic
Stop elements:
combination of cushioning and
end-position sensing
2017/03 – Subject to change
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1
Cushioning components
Product range overview
Function
Type
Version
Shock
absorber
Elastomer absorber
DYEF-Y1
DYEF-Y1F
Adjustable
DYSR
Self-adjusting
YSR-C
DYSC
YSRW
DYSW
2
Brief description
Area of application
Mini slide DGSL
Mechanical shock absorber with flexible rubber buffer
Cushioning stroke cannot be adjusted
No fixed stop
Continuous mounting thread with internal hex
Mechanical shock absorber with flexible rubber buffer
Cushioning stroke can be adjusted
With fixed stop
Continuous mounting thread with internal hex
Mini slide DGSL
Swivel module DSM-B
Hydraulic shock absorber with spring return
Adjustable cushioning hardness
–
Linear drive DGPL
Linear drive DGC
Linear unit SLE
Hydraulic shock absorber with path-controlled flow control function
Rapidly increasing cushioning force curve
Short cushioning stroke
Suitable for rotary drives
Maintenance-free
Continuous mounting thread
Hydraulic shock absorber with path-controlled flow control function
Rapidly increasing cushioning force curve
Short cushioning stroke
Suitable for rotary drives
Maintenance-free
Metal end position at the housing
Continuous mounting thread with internal hex
Hydraulic shock absorber with path-controlled flow control function
Slowly increasing cushioning force curve
Long cushioning stroke
Suitable for low-vibration operation
Short cycle times possible
Maintenance-free
Continuous mounting thread with spanner flat
Hydraulic shock absorber with path-controlled flow control function
Slowly increasing cushioning force curve
Long cushioning stroke
Suitable for low-vibration operation
Short cycle times possible
Maintenance-free
Metal end position at the housing
Continuous mounting thread with internal hex
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Swivel module DSM-B
Swivel/linear unit DSL-B
Linear drive DGC
Handling module HSP,
HSW
Mini slide DGSL
Handling module HSW
Subject to change – 2017/03
Cushioning components
Product range overview
Size
Stroke
[mm]
Energy absorption
per stroke
[J]
Elastomer absorber
M4, M5, M6, M8, M10,
M12, M14, M16
0.9, 1.0, 1.2, 1.3, 1.5
0.015 … 0.55
M4, M5, M6, M8, M10,
M12, M14, M16, M22
1.7, 2.8, 3.1, 3.4, 3.7,
4.2, 5, 4.8, 7
0.005 … 1.2
Adjustable
8, 12, 16, 20, 25, 32
8, 12, 20, 25, 40, 60
4 … 384
Position sensing
n
10
–
n
–
–
14
0.6 … 380
18
–
4, 5, 8, 12, 18, 25
n
Size
4 … 20
0.6 … 25
22
–
5, 7, 8, 10, 12, 16, 20
8, 10, 14, 17, 20, 26, 34
6, 8, 10, 14, 17, 20
26
n
0.8 … 12
30
–
2017/03 – Subject to change
n
1.3 … 70
–
4, 5, 7, 8, 10, 12
è Page/Internet
7
–
Self-adjusting
4, 5, 7, 8, 10, 12, 16, 20, 4, 5, 8, 10, 12, 20, 25,
25, 32
40, 60
4, 5, 7, 8, 12, 16, 20, 25
Free of copper, PTFE and
silicone
è Internet: www.festo.com/catalogue/...
n
3
Cushioning components
Product range overview
Function
Type
Stop
element
Self-adjusting
YSRWJ
Hydraulic
cushioning
cylinder
Adjustable
DYHR
4
Version
Brief description
Area of application
–
Cushioning with self-adjusting, progressive hydraulic shock absorber (YSRW)
Slowly increasing cushioning force curve
Adjustable cushioning stroke
End-position sensing with proximity sensors SME/SMT-8
Precision end-position adjustment
Stop elements YSRWJ can be used for a wide variety of applications in handling and
assembly technology
Hydraulic cushioning cylinder for constant, slow braking speeds across the entire
stroke
Braking speed can be precisely adjusted
A built-in compression spring returns the piston rod to the initial position
Suitable for slow feed speeds in the range up to 0.1 m/s
è Internet: www.festo.com/catalogue/...
–
Subject to change – 2017/03
Cushioning components
Product range overview
Size
Self-adjusting
5, 7, 8
Stroke
[mm]
Energy absorption
per stroke
[J]
8, 10, 14
1…3
Position sensing
Free of copper, PTFE and
silicone
34
n
Adjustable
16, 20, 25, 32
20, 25, 40, 50, 60
–
32 … 384
38
–
2017/03 – Subject to change
è Page/Internet
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–
5
Shock absorbers DYEF- … -Y1, without fixed stop
Type codes
DYEF
—
S
—
M8
—
Y1
Type
DYEF
Shock absorber
Version
S
Long
Short
Size
Design characteristic
Y1
6
Internal hex
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Subject to change – 2017/03
Shock absorbers DYEF- … -Y1, without fixed stop
Technical data
-N-T-
Size
M4 … M16
Stroke length
0.9 … 1.5 mm
General technical data
Size
M4
Stroke
Mode of operation
Cushioning
Cushioning length
Type of mounting
Max. impact velocity
Mounting position
Product weight
[mm]
[mm]
[m/s]
S
Ambient temperature
Corrosion resistance class CRC1)
1)
[g]
[g]
[°C]
M5
M6
M8
0.9
1.5
1.5
1.3
Elastomer cushioning without metal fixed stop
Not adjustable
0.9
1.5
1.5
1.3
Via lock nut
0.8
Any
2.1
3.6
6
14
1.1
2
3
8.6
0 … +60
2
M10
M12
M14
M16
1
1.2
1.2
1.3
1
1.2
1.2
1.3
23
12
45.5
15
82.5
31
106
40
Corrosion resistance class 2 according to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents.
Energy [J]
Size
M4
M5
M6
M8
M10
M12
M14
M16
Max. energy absorption per stroke
0.015
0.05
0.08
0.12
0.25
0.35
0.45
0.55
Mass range [kg]
Size
M4
M5
M6
M8
M10
M12
M14
M16
Mass range up to
0.15
0.35
0.7
1
2
3
5
7
2017/03 – Subject to change
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7
Shock absorbers DYEF- … -Y1, without fixed stop
Technical data
Materials
Sectional view
1
2
Shock absorber
1
2
–
Buffer
Housing
Seals
Note on materials
Nitrile rubber
High-alloy steel
Nitrile rubber
Free of copper, PTFE and silicone
RoHS-compliant
Impact velocity dependent on mass m
DYEF-(S)-M4/M5-Y1
DYEF-(S)-M6/M8/M10-Y1
DYEF-(S-)M4-Y1
DYEF-(S-)M5-Y1
DYEF-(S-)M6-Y1
DYEF-(S-)M8-Y1
DYEF-(S-)M10-Y1
DYEF-(S)-M12/M14/M16-Y1
DYEF-(S-)M12-Y1
DYEF-(S-)M14-Y1
DYEF-(S-)M16-Y1
8
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Subject to change – 2017/03
Shock absorbers DYEF- … -Y1, without fixed stop
Technical data
Download CAD data è www.festo.com
Dimensions
DYEF-M-… – Long version
DYEF-S-M-… – Short version
Size
B1
D1
L1
L2
DYEF-M
DYEF-S-M
22
26
30
38
41
54
72
75
12
14.5
15
23.5
21
20
28
31.5
ß1
ß2
7
8
8
10
13
15
17
19
1.3
1.5
2
2.5
3
4
4
5
+0.3
M4
M5
M6
M8
M10
M12
M14
M16
2.2
2.7
2.5
3
3.5
4
5
5
M4x0.5
M5x0.5
M6x0.5
M8x1
M10x1
M12x1
M14x1
M16x1
Ordering data
Size
Part No.
Type
DYEF-M-… – Long version
M4
1179810
M5
1179818
M6
1179831
M8
1179834
M10
1179837
M12
1179840
M14
1179863
M16
1179879
DYEF-M4-Y1
DYEF-M5-Y1
DYEF-M6-Y1
DYEF-M8-Y1
DYEF-M10-Y1
DYEF-M12-Y1
DYEF-M14-Y1
DYEF-M16-Y1
DYEF-S-M-… – Short version
M4
1152500
M5
1152507
M6
1152524
M8
1152536
M10
1152959
M12
1153004
M14
1153017
M16
1153023
DYEF-S-M4-Y1
DYEF-S-M5-Y1
DYEF-S-M6-Y1
DYEF-S-M8-Y1
DYEF-S-M10-Y1
DYEF-S-M12-Y1
DYEF-S-M14-Y1
DYEF-S-M16-Y1
2017/03 – Subject to change
0.9
1.8
1.8
2
1.8
2
2
2
Max. tightening torque ß1
[Nm]
è Internet: www.festo.com/catalogue/...
0.5
0.8
1
2
3
5
8
20
9
Shock absorbers DYEF- … -Y1F, with fixed stop
Type codes
DYEF
—
M8
—
Y1
F
Type
DYEF
Shock absorber
Size
Design characteristic
Y1
Internal hex
Stop
F
10
With fixed stop
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Subject to change – 2017/03
Shock absorbers DYEF- … -Y1F, with fixed stop
Technical data
-N-T-
Size
M4 … M22
Stroke length
1.7 … 7 mm
General technical data
Size
Stroke
Mode of operation
Cushioning
Cushioning length
Type of mounting
Max. impact velocity
Mounting position
Product weight
Ambient temperature
Corrosion resistance class CRC1)
1)
M4
[mm]
[mm]
[m/s]
[g]
[°C]
M5
M6
M8
1.7
2.8
3.1
3.4
Elastomer cushioning with metal fixed stop
Adjustable
1.7
2.8
3.1
3.4
Via lock nut
0.8
Any
1.6
2.9
5.1
11.9
0 … +60
2
M10
M12
M14
M16
M22
3.7
4.2
5
4.8
7
3.7
4.2
5
4.8
7
19.7
39.6
77.3
104
200
Corrosion resistance class 2 according to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents.
Force [N]
Size
M4
M5
M6
M8
M10
M12
M14
M16
M22
Min. insertion force1)
15
30
40
60
70
100
150
180
500
1)
This is the minimum force that must be applied so that the shock absorber is pushed precisely into the retracted end position. This value is reduced correspondingly in the event of an extended external end position
or a reduction in the cushioning stroke.
Energy [J]
Size
M4
M5
M6
M8
M10
M12
M14
M16
M22
Max. energy absorption per stroke
0.005
0.02
0.03
0.04
0.06
0.12
0.2
0.25
1.2
Mass range [kg]
Size
M4
M5
M6
M8
M10
M12
M14
M16
M22
Mass range up to
0.15
0.25
0.4
0.6
1.2
1.8
3
5
15
2017/03 – Subject to change
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11
Shock absorbers DYEF- … -Y1F, with fixed stop
Technical data
Materials
Sectional view
1
2
3
Shock absorber
1
2
3
–
Buffer
Adjustable sleeve
Setting piece
Seals
Note on materials
Nitrile rubber
High-alloy steel
High-alloy steel
Nitrile rubber
Free of copper, PTFE and silicone
RoHS-compliant
Impact velocity as a function of mass m
DYEF-M4/M5-Y1F
DYEF-M4
DYEF-M5
DYEF-M6
DYEF-M8
DYEF-M10
DYEF-M12/M14/M16-Y1F
DYEF-M22-Y1F
DYEF-M12
DYEF-M14
DYEF-M16
12
DYEF-M6/M8/M10-Y1F
DYEF-M22
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Subject to change – 2017/03
Shock absorbers DYEF- … -Y1F, with fixed stop
Technical data
Download CAD data è www.festo.com
Dimensions
Size
B1
D1
L1
M4
M5
M6
M8
M10
M12
M14
M16
M22
2.2
2.7
2.5
3
3.5
4
5
5
5
M4x0.5
M5x0.5
M6x0.5
M8x1
M10x1
M12x1
M14x1
M16x1
M22x1.5
22
26
30
38
41
54
72
75
78
L2
ß1
ß2
ß3
7
8
8
10
13
15
17
19
27
1.3
1.5
2
2.5
3
4
4
5
5
2.5
3
4
5
6
8
8
10
10
+0.3
Ordering data
Size
Part No.
Type
M4
M5
M6
M8
M10
M12
M14
M16
M22
DYEF-M4-Y1F1)
DYEF-M5-Y1F
DYEF-M6-Y1F
DYEF-M8-Y1F
DYEF-M10-Y1F
DYEF-M12-Y1F
DYEF-M14-Y1F
DYEF-M16-Y1F
DYEF-M22-Y1F
1)
548370
548371
548372
548373
548374
548375
548376
548377
1113706
1.7
2.8
3.1
3.4
3.7
4.2
5
4.8
7
Max. tightening torque ß1
[Nm]
0.5
0.8
1
2
3
5
8
20
35
The scope of delivery for this size includes an Allen key.
2017/03 – Subject to change
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13
Shock absorbers DYSR
Peripherals overview and type codes
Peripherals overview
1
4
2
3
Accessories
Type
Brief description
è Page/Internet
1
Hydraulic shock absorber with adjustable cushioning characteristics
15
Mounting option for shock absorber
42
For protecting the piston rod
44
2
3
4
1)
2)
Shock absorber
DYSR
Mounting flange
YSRF
Buffer
YSRP
Wiper seal1); hardened piston rod2)
The wiper seal (prevents the ingress of dirt) and the hardened piston rod (protects against –
scratches) greatly increase the service life
As of size 12
As of size 16
Type codes
DYSR
—
16
—
20
—
Y5
—
T
Type
DYSR
Shock absorber
Size
Stroke [mm]
Geometric characteristics
Y5
Internal hexagon for cushioning adjustment
Specific characteristics
T
14
Standard thread
Special thread
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Subject to change – 2017/03
Shock absorbers DYSR
Technical data
-N-
Function
-T-
General technical data
Size
Stroke
Mode of operation
8
[mm]
Cushioning
Cushioning length
[mm]
Type of mounting
Impact velocity
[m/s]
Mounting position
Product weight
[g]
Ambient temperature
[°C]
Corrosion resistance class CRC2)
1)
2)
Stroke length
8 … 60 mm
12
16
8
12
20
Hydraulic shock absorber with spring return
Single acting, pushing
Adjustable, force-dependent, hard characteristic curve
8
12
20
Via lock nut
0.1 … 3
Any
60
105/120 1)
200/250 1)
–10 … +80
1
20
25
32
25
40
60
25
40
60
355/425 1)
715
1,355
Applies to shock absorbers with special thread T
Corrosion resistance class 1 according to Festo standard 940 070
Components subject to low corrosion stress. Transport and storage protection. Parts that do not have primarily decorative surface requirements, e.g. in internal areas that are not visible or behind covers
Reset time [s]
Size
8
Reset time1)
 0.2
1)
Size
8 … 32
12
16
20
 0.3
25
32
 0.4
 0.6
The specified technical data refers to ambient temperature. At –10 °C, the reset time can be up to 1 s for sizes 12, 16 and up to 3 s for sizes 8, 20, 25, 32
Force [N]
Size
8
12
16
20
25
32
Min. insertion force1)
Max. stop force2) in the end positions
Min. resetting force3)
18
400
1.8
38
900
4.5
66
1,600
5.4
110
2,500
9
155
4,000
12.5
175
6,400
18
1)
2)
3)
This is the minimum force that must be applied so that the shock absorber is pushed precisely into the retracted end position. This value is reduced correspondingly with an extended external end position
If the maximum stop force is exceeded, a fixed stop (e.g. YSRA) must be fitted 0.5 mm before the end of stroke
This is the maximum force that can act on the piston rod, allowing for full extension of the shock absorber (e.g. protruding bolt)
Energy [J]
Size
8
12
16
20
25
32
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy
4
24,000
0.01
10.8
60,000
0.05
32
100,000
0.16
62.5
135,000
0.32
160
220,000
0.8
384
330,000
2
2017/03 – Subject to change
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15
Shock absorbers DYSR
Technical data
Materials
Sectional view
1
2
Size
1
2
–
–
8
Piston rod
Housing
Buffer
Seals
Note on materials
High-alloy steel
High-alloy steel
Polyacetal
Nitrile rubber
RoHS-compliant
12
16
20
25
32
High-alloy steel, hardened
Galvanised steel
—
v [m/s]
v [m/s]
Selection graph for shock absorbers with infinitely adjustable cushioning DYSR
Impact velocity v as a function of mass m
m [kg]
Three force curves are shown for each
shock absorber. Interim values must
be calculated by averaging.
The arrows relate to the examples
starting on page 48.
m [kg]
1 DYSR-8-8
2 DYSR-12-12
3 DYSR-16-20
4 DYSR-20-25
5 DYSR-25-40
6 DYSR-32-60
Shock absorber
Force A =
Force A =
Force A =
DYSR-8-8
DYSR-12-12
DYSR-16-20
DYSR-20-25
DYSR-25-40
DYSR-32-60
0N
0N
0N
0N
0N
0N
100 N
200 N
500 N
800 N
1,200 N
2,000 N
200 N
500 N
800 N
1,200 N
2,000 N
3,000 N
Recommended max. motive force as a function of energy load
DYSR-8-8-Y5
DYSR-12-12-Y5
DYSR-16-20-Y5
DYSR-20-25-Y5
DYSR-25-40-Y5
DYSR-32-60-Y5
16
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Subject to change – 2017/03
Shock absorbers DYSR
Technical data
Download CAD data è www.festo.com
Dimensions
DYSR-8-8
1 Cushioning adjustment
Buffer (included in the scope
of delivery)
+ = Cushioning becomes harder
– = Cushioning becomes softer
DYSR-…
1 Cushioning adjustment
Buffer YSRP (not included
in the scope of delivery)
+ = Cushioning becomes harder
– = Cushioning becomes softer
Type
B1
4
D1
DYSR-8-8-Y5
DYSR-12-12-Y5
DYSR-12-12-Y5-T
DYSR-16-20-Y5
DYSR-16-20-Y5-T
DYSR-20-25-Y5
DYSR-20-25-Y5-T
DYSR-25-40-Y5
DYSR-32-60-Y5
10
12
M12x1
M15x1
M16x1
M20x1.25
M22x1.5
M24x1.25
M26x1.5
M30x1.5
M37x1.5
Type
L3
L4
5
6
8
D2

D3

±0.2
D4

+0.15
D5

+0.15/–0.1
L1
4
8
–
77±0.1
30
6
–
–
97±0.1
36
–
12
15
16
20
22
24
26
30
37
115 ±0.1
53
138 ±0.1
60
178 ±0.1
230 ±0.15
80
108
Max. tightening torque ß1
12
15
–
–
L5
L6
ß1
ß2
–
–
15
4
5
19
5
20
–
28
–
28
28
28
24
27
30
32
36
46
5
35
5
60
6
6
80
100
10
8
12
8
8+0.5/–0.35
18.4+0.35/–0.2
–
6.4+0.45/–0.4
28.5+0.4/–0.3
–
8.5+0.45/–0.4
35.6+0.4/–0.3
–
10.6+0.45/–0.4
52.8+0.4/–0.3
76+0.5/–0.4
–
–
12.8+0.45/–0.4
16+0.5/–0.4
16
20
25
32
1138641
1138642
1138643
1138644
1138645
1138646
1138647
1138648
1138649
2017/03 – Subject to change
–
±0.2
16.2+0.6/–0.45
Ordering data
Size
Part No.
±0.1
–
20
–
24
28.8
34.8
8
±0.2
DYSR-8-8-Y5
DYSR-12-12-Y5
DYSR-12-12-Y5-T
DYSR-16-20-Y5
DYSR-16-20-Y5-T
DYSR-20-25-Y5
DYSR-20-25-Y5-T
DYSR-25-40-Y5
DYSR-32-60-Y5
L2
[Nm]
Type
DYSR-8-8-Y5
DYSR-12-12-Y5
DYSR-12-12-Y5-T
DYSR-16-20-Y5
DYSR-16-20-Y5-T
DYSR-20-25-Y5
DYSR-20-25-Y5-T
DYSR-25-40-Y5
DYSR-32-60-Y5
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17
Shock absorbers YSR-C
Peripherals overview and type codes
Peripherals overview
1
2
3
4
5
Accessories
Type
Brief description
è Page/Internet
1
Hydraulic shock absorber with rapidly increasing cushioning force curve
19
To improve the cushioning performance in the case of underload, the built-in shock
absorber can be replaced by the next smallest shock absorber with the help of the
reducing sleeve
Mounting option for shock absorber
45
Mounting option for shock absorber with attached stop sleeve and position sensing
43
Stroke limiter for shock absorber
44
For mounting flange YSRF-S
45
2
3
4
5
–
Shock absorber
YSR-C
Reducing sleeve
DAYH
Mounting flange
YSRF
Mounting flange
YSRF-S
Stop limiters
YSRA
Inductive proximity sensor
SIEN
42
Type codes
YSR
—
16
—
20
—
C
Type
YSR
Shock absorber
Size [mm]
Stroke [mm]
Cushioning function
C
18
Self-adjusting
è Internet: www.festo.com/catalogue/...
Subject to change – 2017/03
Shock absorbers YSR-C
Technical data
-N-
Function
-T-
General technical data
Size
Stroke
Mode of operation
4
[mm]
Cushioning
Cushioning length
[mm]
Type of mounting
Impact velocity
[m/s]
Mounting position
Product weight
[g]
Ambient temperature
[°C]
Corrosion resistance class CRC1)
1)
Stroke length
4 … 60 mm
5
7
8
4
5
5
8
Hydraulic shock absorbers with return spring
Single acting, pushing
Self-adjustable
4
5
5
8
With locknut
0.05 … 2
0.05 … 3
Any
5
8
16
32
–10 … +80
2
10
12
16
20
25
32
10
12
20
25
40
60
10
12
20
25
40
60
51
74
185
318
600
1220
Corrosion resistance class 2 to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents
Reset time [s]
Size
4
Reset time1)
 0.2
1)
Size
4 … 32 mm
5
7
8
10
12
16
20
 0.3
25
32
 0.4
 0.5
The specified technical data refers to ambient temperature. At higher temperatures in the 80 °C range, the max. mass and the cushioning work must be reduced by 50% approx. At –10 °C, the reset time may be up to
1 second
Forces [N]
Size
4
5
7
8
10
12
16
20
25
32
Min. insertion force1)
Max. stop force2) in end positions
Min. resetting force3)
6.5
100
0.7
7.5
200
0.9
10
300
1.2
18
500
2.5
25
700
3.5
35
1,000
5
60
2,000
6
100
3,000
10
140
4,000
14
160
6,000
20
1)
2)
3)
This is the minimum force that must be applied so that the shock absorber is pushed exactly into the retracted end position. This value is reduced correspondingly in the event of an extended external end-position
If the max. stop force is exceeded, a fixed stop (e.g. YSRA) 0.5 mm must be fitted before the end of stroke
This is the maximum force which may act upon the piston rod, allowing for full extension of the shock absorber (e.g. protruding stem)
Energies [J]
Size
4
5
7
8
10
12
16
20
25
32
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy
0.6
5,600
0.006
1
8,000
0.01
2
12,000
3
18,000
0.02
6
26,000
0.03
10
36,000
0.05
30
64,000
0.16
60
92,000
0.32
160
150,000
0.8
380
220,000
2
Mass range [kg]
Size
4
5
7
8
10
12
16
20
25
32
Permissible mass range up to
1.2
1.5
5
15
25
45
90
120
200
400
2017/03 – Subject to change
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19
Shock absorbers YSR-C
Technical data
Materials
Sectional view
3
2
1
Piston 
4
1
2
3
Housing
Piston rod
Buffer
High-alloy steel
High-alloy steel
Polyamide
–
–
Seals
Note on materials
Nitrile rubber, polyurethane
Free of copper, PTFE and silicone
Conforms to RoHS
5
7
8
10
12
16
20
25
32
Galvanised steel
Steel with
polyurethane
–
v [m/s]
v [m/s]
Selection graph for self-adjusting shock absorbers YSR-C
Impact velocity dependent on mass m
m [kg]
Three force curves are shown for each
shock absorber. Interim values must
be calculated by averaging. The
arrows relate to the examples starting
on page è 49.
m [kg]
1
2
2
3
4
YSR-4-4-C
YSR-5-5-C
YSR-7-5-C
YSR-8-8-C
YSR-10-10-C
5
6
7
8
aJ
YSR-12-12-C
YSR-16-20-C
YSR-20-25-C
YSR-25-40-C
YSR-32-60-C
Shock absorber
Force A =
Force A =
Force A =
YSR-4-4-C
YSR-5-5-C
YSR-7-5-C
YSR-8-8-C
YSR-10-10-C
YSR-12-12-C
YSR-16-20-C
YSR-20-25-C
YSR-25-40-C
YSR-32-60-C
0N
0N
0N
0N
0N
0N
0N
0N
0N
0N
–
50 N
100 N
100 N
150 N
200 N
500 N
800 N
1,200 N
2,000 N
50 N
100 N
200 N
200 N
300 N
500 N
800 N
1,200 N
2,500 N
4,000 N
20
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Subject to change – 2017/03
Shock absorbers YSR-C
Technical data
Download CAD data è www.festo.com
Dimensions
-H-
Note
To increase the service life:
Avoid the ingress of dirt or fluids
into the piston chamber via the
piston rod by, for example, using
a cover.
Size
B1
D1
D2

D3

D4

L1
[mm]
±0.1
4
5
7
8
10
12
16
20
25
32
2.5
3
3.5
4
5
5
6
8
10
12
Size
L2
[mm]
±0.3
4
5
7
8
10
12
16
20
25
32
18.5
19
23
33
42
51
69
87
125
179
M6x0.5
M8x1
M10x1
M12x1
M14x1
M16x1
M22x1.5
M26x1.5
M30x1.5
M37x1.5
5.3 ±0.05
6.7 ±0.05
8.6 ±0.05
10.4 ±0.1
12.4 ±0.1
14.5 ±0.1
19.6 ±0.1
23.8 ±0.1
27.8 ±0.1
34.8 ±0.1
28.5
29
34
46
55
64
86
104
152
205
L4
L5
ß1
ß2
Max. tightening torque ß 1
[Nm]
8.3 +0.6/–0.3
10.8 +0.6/–0.3
12.3 +0.7/–0.35
16.3 +0.7/–0.35
20.5 +0.7/–0.35
24.5 +0.7/–0.35
36.5 +0.7/–0.35
45.5 +0.7/–0.35
61.5 +1.25/–0.75
87 +1.25/–0.75
4 ±0.1
5.5 ±0.1
7 ±0.2
8 ±0.2
10 ±0.2
12 ±0.2
16 ±0.2
20 ±0.2
20.5 ±0.4
26 ±0.4
4.3 +0.35/–0.25
5.8 +0.55/–0.25
7.3 +0.55/–0.25
8.3 +0.55/–0.25
10.5 +0.55/–0.25
12.5 +0.55/–0.25
16.5 +0.55/–0.25
20.5 +0.55/–0.25
21.5 +0.95/–0.55
27 +0.95/–0.55
8
10
13
15
17
19
27
32
36
46
2
1
2
3
5
8
20
35
60
80
100
Type
4
5
7
8
10
12
16
20
25
32
YSR-4-4-C1)
YSR-5-5-C1)
YSR-7-5-C1)
YSR-8-8-C1)
YSR-10-10-C1)
YSR-12-12-C1)
YSR-16-20-C1)
YSR-20-25-C1)
YSR-25-40-C
YSR-32-60-C
1)
3.5 ±0.05
4.7 ±0.05
6 ±0.1
8 ±0.2
10 ±0.2
12 ±0.2
16 ±0.2
20 ±0.2
25 ±0.2
32 ±0.2
L3
Ordering data
Size
Part No.
[mm]
540060
158981
160272
34571
191199
34572
34573
34574
160273
160274
2
2.5
3
4
5
6
8
10
12
15
–
Free of copper, PTFE and silicone
2017/03 – Subject to change
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21
Shock absorbers DYSC
Peripherals overview and type codes
Peripherals overview
1
2
Accessories
Type
Brief description
è Page/Internet
1
Hydraulic shock absorber with rapidly increasing cushioning force curve
23
To improve the cushioning performance in the case of underload, the built-in shock
absorber can be replaced by the next smallest shock absorber with the help of the
reducing sleeve
45
2
Shock absorber
DYSC
Reducing sleeve
DAYH
Type codes
DYSC
—
8
—
8
—
Y1
F
Type
DYSC
Shock absorber
Size
Stroke [mm]
Geometric characteristic
Y1
Internal hex
Stop
F
22
With fixed stop
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Subject to change – 2017/03
Shock absorbers DYSC
Technical data
-N-
Function
-T-
General technical data
Size
Stroke
Mode of operation
4
[mm]
Cushioning
Cushioning length
[mm]
Type of mounting
Impact velocity
[m/s]
Mounting position
Product weight
[g]
Ambient temperature
[°C]
Corrosion resistance class CRC1)
1)
Stroke length
4 … 25 mm
5
7
8
4
5
5
8
Hydraulic shock absorber with spring return
Single acting, pushing
Self-adjusting, hard characteristic curve
4
5
5
8
With lock nut
0.05 … 2
0.05 … 3
Any
5
9
17
36
–10 … +80
2
12
16
20
25
12
18
18
25
12
18
16
25
81
210
370
575
Corrosion resistance class 2 to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents
Reset time [s]
Size
4
Reset time1)
 0.2
1)
Size
4 … 25
5
7
8
12
16
20
25
 0.3
The specified technical data refers to ambient temperature. At higher temperatures in the 80 °C range, the max. mass and the cushioning work must be reduced by 50% approx. At –10 °C, the reset time may be up to
1 second
Forces [N]
Size
4
5
7
8
12
16
20
25
Min. insertion force1)
Max. stop force2) in end positions
Min. resetting force3)
6.5
100
0.7
7.5
200
0.9
10
300
1.2
18
500
2.5
35
1,000
5
60
2,000
6
100
3,000
10
140
4,000
14
1)
2)
3)
This is the minimum force that must be applied so that the shock absorber is pushed exactly into the retracted end position. This value is reduced correspondingly in the event of an extended external end position
If the max. stop force is exceeded, a fixed stop (e.g. YSRA) 0.5 mm must be fitted before the end of stroke
This is the maximum force which may act upon the piston rod, allowing for full extension of the shock absorber (e.g. protruding stem)
Energies [J]
Size
4
5
7
8
12
16
20
25
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy
0.6
5,600
0.006
1
8,000
0.01
2
12,000
3
18,000
0.02
10
36,000
0.05
25
50,000
0.16
38
80,000
0.32
100
140,000
0.8
Mass range [kg]
Size
4
5
7
8
12
16
20
25
Mass range up to
1.2
1.5
5
15
45
70
100
160
2017/03 – Subject to change
è Internet: www.festo.com/catalogue/...
23
Shock absorbers DYSC
Technical data
Materials
Sectional view
1
2
3
Size
1
2
3
–
4
Buffer
Piston rod
Housing
Seals
Note on materials
5
7
8
POM
High-alloy steel
High-alloy steel
NBR
Free of copper and PTFE
Conforms to RoHS
12
16
20
25
Galvanised steel
Selection graph for self-adjusting shock absorbers DYSC
Impact velocity dependent on mass m
3
4
1
5
6
2
7
8
Three force curves are shown for each
shock absorber. Interim values must
be calculated by averaging.
1 DYSC-4-4-Y1F
2 DYSC-5-5-Y1F
3 DYSC-7-5-Y1F
4 DYSC-8-8-Y1F
5 DYSC-12-12-Y1F
6 DYSC-16-18-Y1F
7 DYSC-20-18-Y1F
8 DYSC-25-25-Y1F
Shock absorber
Force A =
Force A =
Force A =
DYSC-4-4-Y1F
DYSC-5-5-Y1F
DYSC-7-5-Y1F
DYSC-8-8-Y1F
DYSC-12-12-Y1F
DYSC-16-18-Y1F
DYSC-20-18-Y1F
DYSC-25-25-Y1F
0N
0N
0N
0N
0N
0N
0N
0N
–
50 N
100 N
100 N
200 N
500 N
800 N
1,200 N
50 N
100 N
200 N
200 N
500 N
800 N
1,200 N
2,500 N
24
è Internet: www.festo.com/catalogue/...
Subject to change – 2017/03
Shock absorbers DYSC
Technical data
Download CAD data è www.festo.com
Dimensions
-H-
Note
To increase the service life:
Avoid the ingress of dirt or fluids
into the piston chamber via the
piston rod by, for example, using
a cover.
Shock absorber in end position
Size
B1
D1
D2

D3

D4

L1
L2
±0.1
+0.3/–0.2
4
5
7
8
12
16
20
25
2.5
3
3.5
4
5
6
8
10
M6x0.5
M8x1
M10x1
M12x1
M16x1
M22x1.5
M26x1.5
M30x1.5
2
2.5
3
4
6
8
10
12
3.5 ±0.05
4.7 ±0.05
6 ±0.1
7 ±0.1
11 ±0.1
15 ±0.1
18.8 ±0.1
22.8 ±0.1
5.4 ±0.05
6.7 ±0.05
8.6 ±0.05
10.4 ±0.1
14.5 ±0.1
19,6 ±0.1
23.8 ±0.1
27.8 ±0.1
35.5
38.6
45.15
59.05
82.5
110
122
165
25.5
28.6
34.15
46.05
69.5
93
105
137
Size
L31)
L4
ß1
ß2
4
5.5
7
8
12
17
20
22
4 +0.30/–0.24
5 +0.32/–0.28
5 +0.37/–0.28
8 +0.42/–0.33
12 +0.50/–0.35
18 +0.50/–0.35
18 +0.50/–0.35
25 +0.50/–0.35
8
10
13
15
19
27
32
36
2
2.5
3
4
5
5
6
8
[mm]
[mm]
4
5
7
8
12
16
20
25
1)
Max. tightening torque ß1
[Nm]
1
2
3
5
20
35
60
80
Buffer length
Ordering data
Size
Part No.
[mm]
Type
4
5
7
8
12
16
20
25
DYSC-4-4-Y1F
DYSC-5-5-Y1F
DYSC-7-5-Y1F
DYSC-8-8-Y1F
DYSC-12-12-Y1F
DYSC-16-18-Y1F
DYSC-20-18-Y1F
DYSC-25-25-Y1F
570506
548011
548012
548013
548014
553593
2479149
2480234
2017/03 – Subject to change
è Internet: www.festo.com/catalogue/...
25
Shock absorbers YSRW
Peripherals overview and type codes
Peripherals overview
1
2
3
4
Accessories
Type
Brief description
è Page/Internet
1
Hydraulic shock absorber with progressive cushioning characteristic
27
Mounting option for shock absorber
42
Mounting option for shock absorber with attached stop sleeve and position sensing
43
Stroke limiter for shock absorber
44
For mounting flange YSRF-S
45
2
3
4
–
Shock absorber
YSRW
Mounting flange
YSRF
Mounting flange
YSRF-S
Stop limiters
YSRA
Inductive proximity sensor
SIEN
Type codes
YSRW
—
10
—
20
Type
YSRW
Shock absorber
Size
Stroke [mm]
26
è Internet: www.festo.com/catalogue/...
Subject to change – 2017/03
Shock absorbers YSRW
Technical data
-N-
Function
-T-
General technical data
Size
Stroke
Mode of operation
5
[mm]
Cushioning
Cushioning length
[mm]
Type of mounting
Impact velocity
[m/s]
Mounting position
Product weight
[g]
Ambient temperature
[°C]
Corrosion resistance class CRC1)
1)
Stroke length
8 … 34 mm
7
8
8
10
14
Hydraulic shock absorbers with return spring
Single acting, pushing
Self-adjustable
8
10
14
With locknut
0.1 … 2
0.1 … 3
Any
8
18
34
–10 … +80
2
10
12
16
20
17
20
26
34
17
20
26
34
54
78
190
330
Corrosion resistance class 2 to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents
Reset time [s]
Size
5
Reset time1)
 0.2
1)
Size
5 … 20 mm
7
8
10
12
16
20
 0.3
The specified technical data refers to ambient temperature. At higher temperatures in the 80 °C range, the max. mass and the cushioning work must be reduced by 50% approx. At –10 °C, the reset time may be up to
1 second
Forces [N]
Size
5
7
8
10
12
16
20
Min. insertion force1)
Max. stop force2) in end positions
Min. resetting force3)
7.5
200
0.9
10
300
1.2
18
500
2.5
25
700
3.5
35
1,000
5
60
2,000
6
100
3,000
10
1)
2)
3)
This is the minimum force that must be applied so that the shock absorber is pushed exactly into the retracted end position. This value is reduced correspondingly in the event of an extended external end-position
If the max. stop force is exceeded, a fixed stop (e.g. YSRA) 0.5 mm must be fitted before the end of stroke
This is the maximum force which may act upon the piston rod, allowing for full extension of the shock absorber (e.g. protruding stem)
Energies [J]
Size
5
7
8
10
12
16
20
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy
1.3
10,000
0.01
2.5
15,000
4
21,000
0.02
8
30,000
0.03
12
41,000
0.05
35
68,000
0.16
70
100,000
0.32
Mass range [kg]
Size
5
7
8
10
12
16
20
Permissible mass range up to
2
5
10
20
30
50
80
2017/03 – Subject to change
è Internet: www.festo.com/catalogue/...
27
Shock absorbers YSRW
Technical data
Materials
Sectional view
1
2
3
Size
1
2
3
–
5
Buffer
Piston rod
Housing
Seals
Note on materials
7
8
Polyamide
High-alloy steel
High-alloy steel
Nitrile rubber
Free of copper, PTFE and silicone
Conforms to RoHS
10
12
16
20
Galvanised steel
v [m/s]
v [m/s]
Selection graph for self-adjusting shock absorbers with progressive characteristics YSRW
Impact velocity dependent on mass m
m [kg]
Three force curves are shown for each
shock absorber. Interim values must
be calculated by averaging.
1
2
3
4
m [kg]
YSRW-5-8
YSRW-7-10
YSRW-8-14
YSRW-10-17
5 YSRW-12-20
6 YSRW-16-26
7 YSRW-20-34
Shock absorber
Force A =
Force A =
Force A =
YSRW-5-8
YSRW-7-10
YSRW-8-14
YSRW-10-17
YSRW-12-20
YSRW-16-26
YSRW-20-34
0N
0N
0N
0N
0N
0N
0N
50 N
75 N
100 N
150 N
200 N
500 N
800 N
100 N
150 N
200 N
300 N
400 N
800 N
1,200 N
28
è Internet: www.festo.com/catalogue/...
Subject to change – 2017/03
Shock absorbers YSRW
Technical data
Download CAD data è www.festo.com
Dimensions
-H-
Note
To increase the service life:
Avoid the ingress of dirt or fluids
into the piston chamber via the
piston rod by, for example, using
a cover.
Size
B1
D1
D2

D3

D4

L1
±0.1
±0.3
5
7
8
10
12
16
20
3
3.5
4
5
5
6
8
M8x1
M10x1
M12x1
M14x1
M16x1
M22x1.5
M26x1.5
2.5
3
4
5
6
8
10
4.7 ±0.05
6 ±0.1
8 ±0.2
10 ±0.2
12 ±0.2
16 ±0.2
18.8 ±0.2
6.7 ±0.05
8.6 ±0.05
10.4 ±0.1
12.4 ±0.1
14.5 ±0.1
20 ±0.1
24 ±0.1
33.5
41
53
62
72.5
91
112
22.5
30
40
49
59.5
70
91
Size
L4
L5
L6
L7
ß1
ß2
5.5 ±0.1
7 ±0.2
8 ±0.2
10 ±0.2
12 ±0.2
16 ±0.2
20 ±0.2
5.8 +0.35/–0.25
7.3 +0.35/–0.25
8.3 +0.4/–0.25
10.5 +0.4/–0.25
12.5 +0.4/–0.25
16.5 +0.4/–0.25
20.5 +0.4/–0.25
3.5 ±0.25
4.3 ±0.25
5.3 +0.3/–0.25
6.5 +0.3/–0.25
7.5 +0.3/–0.25
9.5 +0.3/–0.25
11.5 +0.3/–0.25
10
13
15
17
19
27
32
7
9
11
13
15
20
24
[mm]
[mm]
5
7
8
10
12
16
20
+0.5
Ordering data
Size
Part No.
[mm]
Type
5
7
8
10
12
16
20
YSRW-5-8
YSRW-7-10
YSRW-8-14
YSRW-10-17
YSRW-12-20
YSRW-16-26
YSRW-20-34
191192
191193
191194
191195
191196
191197
191198
2017/03 – Subject to change
5
6
8
10
12
12
12
L2
L3
13.8 +0.6/–0.25
17.3 +0.7/–0.25
22.3 +0.7/–0.25
27.5 +0.7/–0.25
32.5 +0.7/–0.25
42.5 +0.7/–0.35
54.5 +0.7/–0.35
Max. tightening torque ß1
[Nm]
è Internet: www.festo.com/catalogue/...
2
3
5
8
20
35
60
29
Shock absorbers DYSW
Peripherals overview and type codes
Peripherals overview
1
2
Accessories
Type
Brief description
è Page/Internet
1
Hydraulic shock absorber with rapidly increasing cushioning force curve
31
To improve the cushioning performance in the case of underload, the built-in shock
absorber can be replaced by the next smallest shock absorber with the help of the
reducing sleeve
45
2
Shock absorber
DYSW
Reducing sleeve
DAYH
Type codes
DYSW
—
8
—
14
—
Y1
F
Type
DYSW
Shock absorber
Size
Stroke [mm]
Additional feature
Y1
Internal hex
Stop
F
30
With fixed stop
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Subject to change – 2017/03
Shock absorbers DYSW
Technical data
-N-
Function
-T-
General technical data
Size
Stroke length
6 … 20 mm
8
10
12
6
8
10
Hydraulic shock absorber with spring return
Single acting, pushing
Self-adjusting, soft characteristic curve
6
8
10
With lock nut
0.1 … 2
0.1 … 3
Any
6
11
21
–10 … +80
14
17
20
14
17
20
42
67
91
Reset time [s]
Size
4
8
10
12
Reset time1)
 0.2
Stroke
Mode of operation
Cushioning
Cushioning length
Type of mounting
Impact velocity
Assembly position
Product weight
Ambient temperature
1)
4
Size
4 … 12
[mm]
[mm]
[m/s]
[g]
[°C]
5
7
7
 0.3
The specified technical data refers to ambient temperature. At higher temperatures in the 80 °C range, the max. mass and the cushioning work must be reduced by 50% approx. At –10 °C, the reset time may be up to
1 second
Forces [N]
Size
Min. insertion force1)
Max. stop force 2) in end positions
(housing)
Min. resetting force3)
1)
2)
3)
5
4
5
7
8
10
12
6.5
100
7.5
200
10
300
18
500
25
700
35
1,000
0.7
0.9
1.2
2.5
3.5
5
This is the minimum force that must be applied so that the shock absorber is pushed exactly into the retracted end position. This value is reduced correspondingly in the event of an extended external end position
If the max. stop force is exceeded, a fixed stop (e.g. YSRA) 0.5 mm must be fitted before the end of stroke
This is the maximum force which may act upon the piston rod, allowing for full extension of the shock absorber (e.g. protruding stem)
Energies [J]
Size
4
5
7
8
10
12
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy
0.8
7,000
0.006
1.3
10,000
0.01
2.5
15,000
0.01
4
21,000
0.02
8
30,000
0.03
12
41,000
0.05
Mass range [kg]
Size
4
5
7
8
10
12
Mass range up to
1.2
2
5
10
20
30
2017/03 – Subject to change
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31
Shock absorbers DYSW
Technical data
Materials
Sectional view
1 2
3
Size
1
2
3
–
4
Buffer
Piston rod
Housing
Seals
Note on materials
5
7
8
10
Polyacetate
High-alloy steel
High-alloy steel
Nitrile rubber
Free of copper, PTFE and silicone
Conforms to RoHS
12
Galvanised steel
v [m/s]
v [m/s]
Selection graph for self-adjusting shock absorbers with progressive characteristics DYSW
Impact velocity dependent on mass m
m [kg]
Three force curves are shown for each
shock absorber. Interim values must
be calculated by averaging.
1 DYSW-4-6-Y1F
2 DYSW-5-8-Y1F
3 DYSW-7-10-Y1F
m [kg]
4 DYSW-8-14-Y1F
5 DYSW-10-17-Y1F
6 DYSW-12-20-Y1F
Shock absorber
Force A =
Force A =
Force A =
DYSW-4-6-Y1F
DYSW-5-8-Y1F
DYSW-7-10-Y1F
DYSW-8-14-Y1F
DYSW-10-17-Y1F
DYSW-12-20-Y1F
0N
0N
0N
0N
0N
0N
–
50 N
75 N
100 N
150 N
200 N
50 N
100 N
150 N
200 N
300 N
400 N
32
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Subject to change – 2017/03
Shock absorbers DYSW
Technical data
Download CAD data è www.festo.com
Dimensions
-H-
Note
To increase the service life:
Avoid the ingress of dirt or fluids
into the piston chamber via the
piston rod by, for example, using
a cover.
Shock absorber in end position
Size
B1
D1
D2

D3

D4

[mm]
L1
+0.1
4
5
7
8
10
12
2.5
3
3.5
4
5
5
M6x0.5
M8x1
M10x1
M12x1
M14x1
M16x1
2
2.5
3
4
5
6
3.50.05
4.70.05
60.1
70.1
90.1
110.1
5.350.05
6.70.05
8.60.05
10.40.1
12.40.1
14.40.1
35.5
43.1
52.05
66.05
77.55
90.75
Size
L3
L4
ß1
ß2
[mm]
L2
+0.3
–0.2
Max. tightening
torque ß1
[Nm]
4
5
7
8
10
12
25.5
33.1
41.05
53.05
64.55
77.75
6+0.30/–0.24
8+0.32/–0.28
10+0.37/–0.28
14+0.37/–0.28
17+0.37/–0.28
20+0.45/–0.30
40.05
5.50.1
70.2
80.2
100.2
120.2
8
10
13
15
17
19
2
2.5
3
4
4
5
1
2
3
5
8
20
Ordering data
Size
Part No.
[mm]
Type
4
5
7
8
10
12
DYSW-4-6-Y1F
DYSW-5-8-Y1F
DYSW-7-10-Y1F
DYSW-8-14-Y1F
DYSW-10-17-Y1F
DYSW-12-20-Y1F
548070
548071
548072
548073
548074
548075
2017/03 – Subject to change
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33
Stop elements YSRWJ
Peripherals overview and type codes
Peripherals overview
2
1
Accessories
Type
1
2
Stop element
YSRWJ
Proximity switches
SME-/SMT-8
Brief description
è Page/Internet
Hydraulic shock absorber with progressive cushioning characteristic.
The cushioning length is adjustable
Sensing option for end positions
35
45
Type codes
YSRWJ
—
7
—
10
—
A
Type
YSRWJ
Shock absorber
Size
Stroke [mm]
Position sensing
A
34
Position sensing
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Subject to change – 2017/03
Stop elements YSRWJ
Technical data
-N-
Function
-T-
General technical data
Size
Stroke
Mode of operation
5
[mm]
Cushioning
Cushioning length
[mm]
Type of mounting
Position sensing
Impact velocity
[m/s]
Repetition accuracy
[mm]
Mounting position
Product weight
[g]
Ambient temperature
[°C]
Corrosion resistance class CRC1)
1)
Stroke length
7.5 … 13.5 mm
7
8
8
10
14
A piston rod in front of the shock absorber transmits the force to the shock absorber. This serves as the end stop and
actuates the proximity sensor via a magnet mounted on it
Single acting, pushing
Self-adjustable
8
10
14
With locknut
Via proximity sensor
0.05 … 2
0.05 … 3
0.02
Any
45
75
110
0 … +60
2
Corrosion resistance class 2 to Festo standard 940 070
Components subject to moderate corrosion stress. Externally visible parts with primarily decorative surface requirements which are in direct contact with a normal industrial environment or media such as coolants or
lubricating agents
Reset time [s]
Size
5
Reset time1)
 0.2
1)
Size
5 … 8 mm
7
8
The specified technical data refers to ambient temperature. At higher temperatures in the 80 °C range, the max. mass and the cushioning work must be reduced by 50% approx.
At 0 °C, the reset time may be up to 1 second
Forces [N]
Size
5
7
8
Min. insertion force1)
Max. stop force2) in end positions
Min. resetting force3)
5
200
1.5
18
300
2
80
500
3.5
1)
2)
3)
This is the minimum force that must be applied so that the shock absorber is pushed exactly into the retracted end position
Impact force may not exceed the maximum specified value
This is maximum force that can be exerted on the piston rod so that the shock absorber advances fully
Energies [J]
Size
5
7
8
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy
1
10,000
0.01
2
15,000
3
21,000
0.02
Mass range [kg]
Size
5
7
8
Permissible mass range up to
2
5
10
2017/03 – Subject to change
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35
Stop elements YSRWJ
Technical data
Materials
Sectional view
1
2
3
Stop element
1
2
3
–
Stop bolt
Distance sleeve
Threaded barrel
Note on materials
Steel, stainless and reinforced
Galvanised steel
Brass, nickel-plated
Free of copper, PTFE and silicone
Conforms to RoHS
Selection graphs for limit stops with shock absorber YSRWJ
Impact velocity dependent on mass m
YSRWJ-5-8-A
YSRWJ-7-10-A
1 Without additional force
2 With additional force A = 75 N
3 With additional force A = 150 N
v [m/s]
v [m/s]
1 Without additional force
2 With additional force A = 50 N
3 With additional force A = 100 N
m [kg]
m [kg]
YSRWJ-8-14-A
v [m/s]
1 Without additional force
2 With additional force A = 100 N
3 With additional force A = 150 N
m [kg]
36
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Subject to change – 2017/03
Stop elements YSRWJ
Technical data
Mode of operation
1 Soft cushioning characteristics –
cushioning stroke is adjustable
2 End-position sensing via
proximity sensor SME-/SMT-8
that can be integrated
3 Precision end-position
adjustment
4 Precision end position thanks to
internal, metallic inserts
4
3
2
1
Download CAD data è www.festo.com
Dimensions
1 Rubber buffer, only with sizes:
YSRWJ-7-10-A and
YSRWJ-8-14-A
2 Precision end-position
adjustment
3 Slot for proximity sensor
SME-/SMT-8
Size
B1
B2
[mm]
D1
D2
+0.4
D3
D4
+0.1
D5
H1
L1
+0.1
+0.3
+0.3/–0.1
5
7
8
3
3.5
4
8.1
8.5
8.5
M8x1
M10x1
M12x1
4
6
8
12
14
16
6.7 ±0.05
8.6 ±0.05
10.4 ±0.1
2
2.4
2.4
16.5
18.3
20.75
97.4
144.8
133.3
Size
L2
L3
L4
L5
L6
L7
ß1
ß2
[mm]
+0.4
+0.45/–0.1
+0.5
+0.1/–0.55
+0.3
Max. tightening
torque ß1
[Nm]
5
7
8
32.5
40
40
21.6
21.1
33.6
5
6
8
4.4
4
4.4
0.5
0.5
0.5
10
13
15
7
9
11
2
3
5
8 +0.7/–0.55
10 +0.8/–0.55
14 +0.8/–0.55
Ordering data
Size
Part No.
[mm]
Type
5
7
8
YSRWJ-5-8-A
YSRWJ-7-10-A
YSRWJ-8-14-A
192968
192967
192966
2017/03 – Subject to change
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37
Hydraulic cushioning cylinders DYHR
Peripherals overview and type codes
Peripherals overview
1
4
2
3
Accessories
Type
Brief description
è Page/Internet
1
Hydraulic cushioning cylinder with spring return for slow feed speeds
39
Mounting option for hydraulic cushioning cylinder
42
For protecting the piston rod
44
2
3
4
Hydraulic cushioning cylinder
DYHR
Mounting flange
YSRF
Buffer
YSRP
Wiper seal; hardened piston rod
The wiper seal (prevents the ingress of dirt) and the hardened piston rod (protects against –
scratches) greatly increase the service life
Type codes
DYHR
—
16
—
20
—
Y5
Type
DYHR
Hydraulic cushioning cylinder
Size
Stroke [mm]
Design characteristic
Y5
38
Internal hex for setting the flow control valve
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Subject to change – 2017/03
Hydraulic cushioning cylinders DYHR
Technical data
-N-
Function
-T-
General technical data
Size
Stroke
[mm]
Mode of operation
Braking speed
Type of mounting
Max. impact velocity
Mounting position
Feed speed
Product weight
Ambient temperature
Corrosion resistance class CRC1)
1)
[m/s]
[mm/s]
[g]
[°C]
Stroke length
20 … 60 mm
16
20
40
20
25
50
Hydraulic cushioning cylinder with spring return
Single-acting, pushing
Adjustable
Via lock nut
0.3
Any
0.2 … 100
190
255
360
440
0 … +80
1
25
40
32
60
720
1,380
Corrosion resistance class 1 according to Festo standard 940 070
Components subject to low corrosion stress. Transport and storage protection. Parts that do not have primarily decorative surface requirements, e.g. in internal areas that are not visible or behind covers
Reset times [s]
Size
Short stroke1)
Long stroke1)
1)
Size
16 … 32
16
20
25
32
 0.4
 0.8
 0.5
1
 0.8
–
 1.2
–
Increased reset times must be expected at low temperatures (0 °C). Up to 5 s with sizes 12 and 16 and up to 12 s with sizes 25 and 32.
Forces [N]
Size
16
20
25
32
Min. feed force1)
Max. feed force2)
Resetting force3)
160
1,600
5.4
250
2,500
9
400
4,000
12.5
640
6,400
18
25
40
32
60
160
220,000
0.8
384
330,000
2
1)
2)
3)
Min. required force for constant braking speed with repetition accuracy
Corresponds to max. force in the end position
With piston rod advanced
Energies [J]
Size
Stroke
[mm]
Max. energy absorption per stroke
Max. energy absorption per hour
Max. residual energy in the end position
2017/03 – Subject to change
16
20
32
100,000
0.16
40
64
150,000
20
25
50
62.5
135,000
0.32
125
200,000
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39
Hydraulic cushioning cylinders DYHR
Technical data
Materials
Sectional view
1
2
Hydraulic cushioning cylinder
1
2
–
Piston rod
Housing
Seals
Note on materials
Hardened high-alloy steel
Galvanised steel
Nitrile rubber
RoHS-compliant
Braking speed v as a function of motive force F and flow control valve setting
DYHR-16
DYHR-20
DYHR-25
DYHR-32
Flow control valve open
Flow control valve closed
40
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Subject to change – 2017/03
Hydraulic cushioning cylinders DYHR
Technical data
Download CAD data è www.festo.com
Dimensions
+ = Braking speed becomes harder
– = Braking speed becomes softer
1 Speed control
Size
Stroke
B1
D1
D2

D3

+0.15/–0.1
D4

+0.15
6
M20x1.25
8
20
–
[mm]
16
L1
8
M24x1.25
10
24
–
25
32
20
40
25
50
40
60
10
12
M30x1.5
M37x1.5
12
15
30
37
28.8
34.8
115 0.1
150 0.1
138 0.1
181 0.1
178 0.1
2300.15
Size
Stroke
L2
L3
L4
L5
ß1
ß2
[mm]
0.1
20
16
20
25
32
20
40
25
50
40
60
Ordering data
Size
Stroke
[mm]
16
20
25
32
20
40
25
50
40
60
2017/03 – Subject to change
0.2
28.5+0.4/–0.3
48.5+0.4/–0.3
35.6+0.4/–0.3
60.6+0.4/–0.3
52.8+0.4/–0.3
76+0.5/–0.4
53
60
80
108
Part No.
Type
1155690
1155691
1155692
1155693
1155694
1155696
DYHR-16-20-Y5
DYHR-16-40-Y5
DYHR-20-25-Y5
DYHR-20-50-Y5
DYHR-25-40-Y5
DYHR-32-60-Y5
8.5+0.45/–0.4
–
24
5
10.6+0.45/–0.4
–
30
5
12.8+0.45/–0.4
16+0.5/–0.4
28
28
36
46
6
6
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41
Accessories for cushioning components
Technical data
Mounting flange
YSRF/YSRF-C
Material:
Steel
Possible combinations
Cushioning components
Mounting flange
DYSR-…Y5
YSR-C
YSRW
YDR
Y5-T
YSRF
YSRF-8
YSRF-12
YSRF-16
YSRF-20
YSRF-25
YSRF-32
–
n
n
n
n
n
–
–
–
–
–
–
n1)
–
–
–
n
n
n1)
–
–
–
–
–
–
–
n
n
n
n
YSRF-C
YSRF-8-C
YSRF-12-C
YSRF-16-C
YSRF-20-C
n
–
–
–
–
n
n
n
n
n
n
n
n
n
n
n
–
–
–
–
1)
For shock absorber size  7
Dimensions and ordering data
YSRF
For size
B1
B2
[mm]
8
12
16
20
25
32
1)
16
25
30
36
45
55
5.5
6.8
9
11
13
15
D1
D2
D3
H1
L1
L2
CRC1)
Weight
[g]
Part No.
Type
10
11
15
18
20
24
5.5
6.6
9
11
13.5
15.5
10.2
15.2
20.2
24.2
30.2
37.2
16
25
30
36
45
55
25
36
45
56
63
80
38
50
63
78
86
108
2
2
2
2
2
2
50
175
300
535
895
1,730
11681
11682
11683
11684
11685
11686
YSRF-8
YSRF-12
YSRF-16
YSRF-20
YSRF-25
YSRF-32
Corrosion resistance class 2 according to Festo standard 940 070
Components requiring moderate corrosion resistance. Externally visible parts with primarily decorative surface requirements which are in direct contact with a surrounding industrial atmosphere or media such as
cooling or lubricating agents
YSRF-C
For size
[mm]
B1
B2
D1
D2
D3
H1
L1
L2
CRC1)
Weight
[g]
Part No.
Type
8
12
16
20
20
25
32
40
5.5
6.8
9
11
10
11
15
18
5.5
6.6
9
11
12.2
16.2
22.2
26.2
20
25
32
40
28
36
45
56
41
50
63
78
2
2
2
2
90
180
330
700
34575
34576
34577
34578
YSRF-8-C
YSRF-12-C
YSRF-16-C
YSRF-20-C
1)
42
Corrosion resistance class 2 according to Festo standard 940 070
Components requiring moderate corrosion resistance. Externally visible parts with primarily decorative surface requirements which are in direct contact with a surrounding industrial atmosphere or media such as
cooling or lubricating agents
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Subject to change – 2017/03
Accessories for cushioning components
Technical data
Mounting flange YSRF-S-C
Material:
Aluminium, steel
Free of copper, PTFE and silicone
1 Sensor
2 Min. distance between sensor
and end stop
3 End position of shock absorber
Possible combinations
Cushioning components
Mounting flange
YSR-C
YSRW
n
n
n
n
YSRF-S-8-C
YSRF-S-12-C
YSRF-S-16-C
YSRF-S-20-C
Dimensions and ordering data
For size
B1
D1
n
n
n
n
D2

H1
H2
H3
H4
L1
L2
L3
T1
5.5
6.6
9
11
35
42
48
52
25
32
38
42
9.5
12.5
16.5
19
16
20
22
23.5
32
36
45
56
45
50
60
80
4
3
8
11.5
2
4
4
4
[mm]
8
12
16
20
-H-
Weight
Part No.
Type
34579
34580
34581
34582
YSRF-S-8-C
YSRF-S-12-C
YSRF-S-16-C
YSRF-S-20-C
[g]
20
25
30
30
M12x1
M16x1
M22x1.5
M26x1.5
12
130
180
250
Note
Inductive sensors for position
sensing è 45
2017/03 – Subject to change
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43
Accessories for cushioning components
Technical data
Buffer YSRP
6 Polyurethane insert
7 Buffer
Material:
Steel, polyurethane
Dimensions and ordering data
For size
D3
[mm]
D4
L7
L8
ß2
CRC1)
Weight
[g]
Part No.
Type
8
12
16
20
25
32
M2
M4
M5
M6
M8
M8
6,7
10
13.5
17
20.5
26
4
6
8
10
12
15
0,9
2
2.5
3
4
4
2
2
2
2
2
2
4
7
15
27
52
110
539638
11133
11134
11135
11136
11137
YSRP-8
YSRP-12
YSRP-16
YSRP-20
YSRP-25
YSRP-32
1)
8
12
16
20
25
32
Corrosion resistance class 2 according to Festo standard 940 070
Components requiring moderate corrosion resistance. Externally visible parts with primarily decorative surface requirements which are in direct contact with a surrounding industrial atmosphere or media such as
cooling or lubricating agents
Stop limiter YSRA-C
Material:
Steel
Dimensions and ordering data
For size
D
[mm]
7
8
12
44
M10x1
M12x1
M16x1
L
ß
Weight
[g]
Part No.
Type
14.5
18
24.5
13
15
19
12
28
48
150932
150933
150934
YSRA-7-C
YSRA-8-C
YSRA-12-C
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Subject to change – 2017/03
Accessories for cushioning components
Technical data
To improve the cushioning perform­
ance in the case of underload, the
built-in shock absorber can be
replaced by the next smallest shock
absorber with the help of the reducing
sleeve.
Reducing sleeve DAYH
Material:
Stainless steel
Built-in shock absorber
Part No.
Reducing sleeve
Part No.
Next smallest shock absorber
YSR…-C
YSR-5-5-C
1165476
DAYH-4
540060
YSR-4-4-C
DYSC…
DYSC-8-8-Y1F
DYSC-7-5-Y1F
1165484
1165480
DAYH-7
DAYH-5
548012
548011
DYSC-7-5-Y1F
DYSC-5-5-Y1F
DYSW-…
DYSW-12-20-Y1F
DYSW-10-17-Y1F
DYSW-8-14-Y1F
DYSW-7-10-Y1F
DYSW-5-8-Y1F
1165491
1165488
1165484
1165480
1165476
DAYH-10
DAYH-8
DAYH-7
DAYH-5
DAYH-4
548074
548073
548072
548071
548070
DYSW-10-17-Y1F
DYSW-8-14-Y1F
DYSW-7-10-Y1F
DYSW-5-8-Y1F
DYSW-4-6-Y1F
Ordering data – Proximity sensors for T-slot, magneto-resistive
Type of mounting
Switch
output
Electrical connection
Cable length
[m]
Part No.
Technical data è Internet: smt
Type
Cable, 3-wire
Plug M8x1, 3-pin
Plug M12x1, 3-pin
Cable, 3-wire
Plug M8x1, 3-pin
2.5
0.3
0.3
2.5
0.3
574335
574334
574337
574338
574339
SMT-8M-A-PS-24V-E-2,5-OE
SMT-8M-A-PS-24V-E-0,3-M8D
SMT-8M-A-PS-24V-E-0,3-M12
SMT-8M-A-NS-24V-E-2,5-OE
SMT-8M-A-NS-24V-E-0,3-M8D
Cable, 3-wire
7.5
574340
SMT-8M-A-PO-24V-E-7,5-OE
Electrical connection
Cable length
[m]
Part No.
Technical data è Internet: sme
Type
N/O contact
Insertable in the slot from above, flush
with cylinder profile, short design
PNP
NPN
N/C contact
Insertable in the slot from above, flush
with cylinder profile, short design
PNP
Ordering data – Proximity sensors for T-slot, magnetic reed
Type of mounting
Switch
output
N/O contact
Insertable in the slot from above, flush
with cylinder profile
Contacting
Cable, 3-wire
Plug M8x1, 3-pin
2.5
0.3
543862
543861
SME-8M-DS-24V-K-2,5-OE
SME-8M-DS-24V-K-0,3-M8D
Insertable in the slot lengthwise, flush
with the cylinder profile
Contacting
Cable, 3-wire
Plug M8x1, 3-pin
2.5
0.3
150855
150857
SME-8-K-LED-24
SME-8-S-LED-24
Insertable in the slot lengthwise, flush
with the cylinder profile
Contacting
Cable, 3-wire
7.5
160251
SME-8-O-K-LED-24
N/C contact
2017/03 – Subject to change
è Internet: www.festo.com/catalogue/...
45
Accessories for cushioning components
Technical data
Cable length
[m]
Part No.
Technical data è Internet: sien
Type
2.5
150386
SIEN-M8B-PS-K-L
–
150387
SIEN-M8B-PS-S-L
2.5
150390
SIEN-M8B-PO-K-L
–
150391
SIEN-M8B-PO-S-L
Electrical connection, right
Cable length
[m]
Part No.
Technical data è Internet: nebu
Type
Straight socket, M8x1, 3-pin
Cable, open end, 3-wire
Angled socket, M8x1, 3-pin
Cable, open end, 3-wire
2.5
5
2.5
5
541333
541334
541338
541341
NEBU-M8G3-K-2.5-LE3
NEBU-M8G3-K-5-LE3
NEBU-M8W3-K-2.5-LE3
NEBU-M8W3-K-5-LE3
Ordering data – Inductive sensors M8, for mounting flange YSRF-S-C
Electrical connection
Switch
output
Cable
M8 plug
LED
NO contact
3 wires
–
PNP
–
3-pin
PNP
3 wires
–
PNP
–
3-pin
PNP
n
n
NC contact
Ordering data – Connecting cables
Electrical connection, left
46
è Internet: www.festo.com/catalogue/...
n
n
Subject to change – 2017/03
Calculation tool for cushioning components
Technical data
This selection aid helps you find the
right shock absorber for every
application.
When you are choosing a shock
absorber, we recommend that you
proceed as follows:
1.
When you are choosing a shock
absorber for your application, ensure
that the following values are not
exceeded:
–
–
The (angular) velocity required in the
formulae is the velocity at the time of
the impact on the shock absorber.
This depends on the dynamic
characteristics of the drive component
and is thus difficult to determine.
It is better to determine the mean
velocity (vm = s/t or m =/t).
The following formulae are required
for the calculation:
Determine the following values,
effective at the time of impact:
– Force (A)
– Equivalent mass mequiv
– Impact velocity (v)
2.
3.
Select a shock absorber from the
graphs on the following pages.
Check your selection on the basis
of its maximum cushioning
energy (Wmax.)
Permissible energy load per
stroke:
Wmin.
= 25%
Wmax. = 100%
Recommended energy load per
stroke:
Wopt.
= 50% ... 100 %
–
–
–
Max. energy absorption per hour
Max. residual energy
Max. stop force in end position
In order to prevent damage to the
drive concerned, calculations should
in the interests of safety be based on
the following values:
v = 1.25 ... 2 vm
 = 1.25 ... 2m
Guide values for linear motions:
Factor 2 with strokes ‹ 50 mm,
factor 1.5 with strokes › 50 mm and
‹ 100 mm,
factor 1.25 with strokes › 100 mm.
A +F)m
g
Wtotal + 1
2
m
mequiv. +
v+w
A
F
G
sin a
v2 ) A
s t Wmax.
Stroke B Hours t Whmax.
g
sin a
a
R
= Additional force = F + G [N]
= Cylinder force minus
frictional force [N]
= Force due to weight
= m x g x sin 
Special cases:
 = 0°: Horizontal motion
G=0
 = 90°: Downward motion
G=mxg
 = 90°: Upward motion:
G = –m x g
2017/03 – Subject to change
The fact that the (angular) velocity
appears in the calculation as a
squared value means that the
expected error becomes considerably
larger. The calculation can thus be
regarded only as an approximation.
The safety factor does, however,
ensure that the selected shock
absorber is not too small.
J
R2
R
A + M)m
R
The following abbreviations are used:
Note
Sizing software
Shock absorber selection
èwww.festo.com
A +F)G
Wh + Wtotal
The following applies additionally for
rotary motions:
-H-
v = Impact velocity [m/s]
mequiv.= Equivalent mass [kg]
g = Acceleration due to gravity
9.81 [m/s2]
s = Shock absorber stroke [m]
 = Impact angle [°]
Wtotal= Cushioning work/stroke [J]
Wh = Cushioning work/hour [J]
è Internet: www.festo.com/catalogue/...
J
R

M
a
= Mass moment of inertia
[kg x m2]
= Distance between mass pivot
point and shock absorber [m]
= Angular velocity [rad/s]
= Drive torque [Nm]
= Distance between centre of
gravity of mass and pivot point
47
Calculation tool for cushioning components
Technical data
Sizing example for linear motion
This example illustrates the procedure
for the selection of a shock absorber
for the application shown in the
adjacent drawing:
m
v

F
= 50 kg
= 1.5 m/s
= 45°
= 190 N
= F + m x g x sin 
190 N + 50 x 9.81 x sin  N
= 537 N
mequiv = m = 50 kg
( 20 mm with p = 6 bar,
1,800 strokes per hour)
A
In the process of selecting shock
absorbers on the basis of the graphs
(see data sheets), the force (A) is
governed by the first curve to the right
of the point of intersection of the
equivalent mass (mequiv) and the
impact velocity (v). The curves move to
the left as the additional force
increases.
Three force curves are given for each
shock absorber. Interim values must
be calculated by averaging. As the
graphs show (continuous line), poss­
ible choices are the shock absorbers
DYSR-25-40 and YSR-25-40-C.
We must now determine whether the
maximum permissible values for
cushioning work (Wmax.) and
cushioning work per hour (Whmax.) are
not being exceeded. These maximum
permissible values and the stroke
length (s) can be found in the tables
(below the graphs).
Experiment:
Wtotal = ½ x m x v2 + A x s
= (1/2 x 50 x 1.52 +
537 x 0.04) Nm = 78 J
Wh
For the above application, both shock
absorbers are suitable.
Further selection criteria are
adjustment facilities and size.
= Wtotal x strokes/h
= 78 Nm x 1,800
= 140,000 J
Result
Wtotal
Wh
Wmax.1)
Whmax.
1)
48
DYSR-25-40
YSR-25-40-C
78 J
140,000 J
160 J  Wtotal
220,000  Wmax.
78 J
140,000 J
160 J  Wtotal
150,000  Wmax.
The degree of utilisation is 49% in both cases.
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Subject to change – 2017/03
Calculation tool for cushioning components
Technical data
Sizing example for rotary motion
J

R
M
Example for rotary motion:
mequiv = J/R2 = 8 kg
v
=xR
A
= M/R = 40 N
= 2 kg m2
= 4 rad/s
= 0.5 m
= 20 Nm
900 strokes per hour
Mass m
In the process of selecting shock
absorbers on the basis of graphs (see
data sheets), the force (A) is governed
by the first curve to the right of the
point of intersection of the equivalent
mass (mequiv) and the impact velocity
(v). The curves move to the left as the
additional force increases.
Three force curves are given for each
shock absorber. Interim values must
be calculated by averaging. As the
graphs show (dotted line), possible
choices are the shock absorbers
DYSR-16-20 and YSR-16-20-C.
We must now determine whether the
maximum permissible values for
cushioning work (Wmax.) and
cushioning work per hour (Whmax.) are
not being exceeded. These maximum
permissible values and the stroke
length (s) can be found in the tables
(below the graphs).
Experiment:
Wtotal = ½ x m x v2 + A x s
= (1/2 x 8 x 22 +
40 x 0.02) J = 17 J
Wh
For the above application, both shock
absorbers are suitable.
Further selection criteria are
adjustment facilities and size.
= Wtotal x strokes/h
= 17 J x 900
= 15,300 J
Note: The impact angle must be noted
with rotary applications.
tan a + s
R
s = Cushioning stroke
Result
Wtotal
Wh
Wmax.
Whmax.
1)
2)
3)
DYSR-16-20 3)
YSR-16-20-C
17 J
15,300 J
32 J  Wtotal1)
100,000  Wmax.
17 J
15,300 J
30 J  Wtotal2)
64,000  Wmax.
The degree of utilisation is 53%.
The degree of utilisation is 57%.
Use without buffer.
2017/03 – Subject to change
è Internet: www.festo.com/catalogue/...
49