PTI
BNZ bushing
self-lubricating, cylindrical.
Self-lubricating Bushings:
A self-lubricating sintered bushing is a metallic component with high porosity (20-25% in volume), impregnated
with a lubricant oil. The oil contained in the porosity provides a constant lubrication between bearing and shaft,
so the system does not need any additional external lubricant. Self-lubrication allows this type of sliding bushing
to work under hydrodynamic conditions, resulting in a very low friction coefficient.
Self-lubricating sintered bushings have some advantages compared to other types of dry sliding bushings:
- Reliability. The constant oil presence eliminates the risk of seizure, and allows the bearing to work during
thousands of hours without wear.
- Economy. Maintenance-free, no need for lubricants.
- Performance. Able to work under loads of up to 1.450 psi, and speeds up to 0,2 in/s. The maximum working PV
is is the range of 30 psi·in/s, but it can be surpassed in special cases. The dimensional precision is very high (up to
IT 5 in diameter), and produce extremely low noise.
Mounting:
Shaft hardness:
Surface roughness:
Shaft tolerance:
Housing tolerance:
> 20 HRC
< 0,3 Ra
f7/g6
H7
Typical tolerance of the inside bore after mounting:
Cylindrical bushing
H7
See the following pages for dimensions.
technical changes reserved
www.pti.eu
PTI Europa A/S
PTI
BNZ bushing
self-lubricating, cylindrical.
Diameter before fitting
d (mm)
tolerance G7 (µm)
D (mm)
tolerance s7 (µm)
2
3
4
4
4
5
5
5
6
6
6
7
8
8
8
8
9
9
10
10
10
10
10
12
12
12
12
12
12
14
14
14
+ 12 / +2
5
6
6
7
8
8
9
10
9
10
12
10
10
11
12
14
12
14
13
14
15
16
18
14
15
16
17
18
20
18
20
22
+31 / +19
+ 12 / +2
+16 / +4
+16 / +4
+16 / +4
+16 / +4
+16 / +4
+16 / +4
+16 / +4
+16 / +4
+16 / +4
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+20 / +5
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
technical changes reserved
+31 / +19
+31 / +19
+38 / +23
+38 / +23
+38 / +23
+38 / +23
+38 / +23
+38 / +23
+38 / +23
+46 / +28
+38 / +23
+38 / +23
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+46 / +28
+56 / +35
+46 / +28
+56 / +35
+56 / +35
www.pti.eu
L = Available lenghts, tolerance js13
2-3
4 - 5 - 6 - 10
5 - 8 - 10
4 - 8 - 12
4 - 5 - 6 - 8 -10 - 12
5 - 8 - 10 -12 - 15 - 16
4-5-8
5 - 6 - 8 - 10 - 12 - 15
4 - 6 - 10 - 12 - 16
4 - 5 - 6 - 10 - 12 - 15 - 16
5 - 6 - 8 - 10 - 12 - 15 - 16
5 - 8 - 10
6 - 10 - 15
6 - 8 - 12 - 16 - 20
6 - 8 - 10 - 12 - 15 - 16 - 20
8 - 10 - 12 - 15 - 16 - 20
6 - 10 - 14
10 - 12 - 15 - 20
10 - 12 - 15 - 16 - 20 - 25
8 - 10 - 16 - 20 - 25
10 - 12 - 15 - 16 - 20 - 25
8 - 10 - 12 - 15 - 16 - 20 - 25
10 - 12 - 15 - 20 - 25
10 - 12 - 15 - 20
10 - 12 - 15 - 16 - 20 - 25
8 - 10 - 12 - 15 - 16 - 20 - 25
12 - 15 - 16 - 20 - 25
8 - 10 - 12 - 15 - 16 - 20 - 25 - 30
12 - 15 - 20 - 25 - 30
10 - 14 - 15 - 18 - 20 - 22 - 25 - 28
10 - 12 - 14 - 15 - 18 - 20 - 22 - 25 - 28 - 30
15 - 20 - 25 - 30
PTI Europa A/S
PTI
BNZ bushing
self-lubricating, cylindrical.
Diameter before fitting
d (mm)
tolerance G7 (µm)
D (mm)
tolerance s7 (µm)
15
15
15
15
15
16
16
17
18
18
18
20
20
20
20
20
20
22
22
22
25
25
25
28
28
28
28
30
30
30
32
32
35
35
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+24 / +6
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+28 / +7
+34 / +9
+34 / +9
+34 / +9
+34 / +9
18
19
20
21
22
20
22
22
22
24
25
24
25
26
27
28
30
27
28
29
30
32
35
32
33
35
36
35
38
40
38
40
40
41
+46 / +28
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+56 / +35
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
technical changes reserved
www.pti.eu
L = Available lenghts, tolerance js13
15 - 20 - 25 - 30
10 - 15 - 16 - 20 - 25 - 32
10 - 12 - 15 - 20 - 25 - 30
10 - 15 - 16 - 20 - 25 - 32
15 - 16 - 20 - 25 - 30
12 - 15 - 16 - 20 - 25 - 30 - 32
12 - 15 - 16 - 20 - 25 - 30 - 32 - 35
15 - 20 - 25 - 30 - 35
12 - 15 - 18 - 20 - 22 - 25 - 28 - 30 - 36
12 - 18 - 22 - 28 - 30 - 36
16 - 18 - 20 - 22 - 25 - 28 - 30 - 35 - 36
16 - 20 - 25 - 32
15 - 16 - 20 - 25 - 30 - 32 - 35
15 - 16 - 20 - 25 - 30 - 32 - 35 - 40
16 - 20 - 25 - 32
16 - 20 - 25 - 30 - 32 - 35 - 40
20 - 25 - 30 - 35 - 40
15 - 18 - 20 - 22 - 25 - 28 - 30 - 35 - 36 - 40
18 - 20 - 22 - 25 - 28 - 30 - 35 - 36 - 40
18 - 22 - 28 - 36
20 - 25 - 30 - 32 - 35 - 40
20 - 25 - 30 - 32 - 35 - 40 - 45
25 - 30 - 35 - 40 - 45 - 50
20 - 22 - 25 - 28 - 32 - 36 - 40
20 - 22 - 25 - 28 - 32 - 36 - 40 - 45
25 - 30 - 35 - 40 - 45 - 50
22 - 28 - 36 - 45
20 - 25 - 30 - 35 - 40 - 45 - 50
20 - 24 - 25 - 30 - 35 - 38 - 40 - 45 - 50
20 - 25 - 30 - 35 - 40 - 45 - 50
20 - 25 - 32 - 40 - 50
20 - 25 - 30 - 32 - 35 - 40 - 45 - 50
20 - 25 - 30 - 35 - 40 - 45 - 50
25 - 35 - 40
PTI Europa A/S
PTI
BNZ bushing
self-lubricating, cylindrical.
Diameter before fitting
d (mm)
tolerance G7 (µm)
D (mm)
tolerance s7 (µm)
35
35
36
36
38
40
40
40
45
45
45
45
50
50
55
60
60
60
63
70
80
100
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+34 / +9
+40 / +10
+40 / +10
+40 / +10
+40 / +10
+40 / +10
+40 / +10
+66 / +12
+66 / +12
44
45
42
45
44
45
46
50
51
55
56
60
56
60
65
70
72
80
70
80
100
120
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+68 / +43
+83 / +53
+83 / +53
+83 / +53
+83 / +53
+83 / +53
+83 / +53
+83 / +53
+89 / +59
+89 / +60
+89 / +61
+89 / +62
+89 / +63
+125 / +71
+125 / +72
technical changes reserved
www.pti.eu
L = Available lenghts, tolerance js13
22 - 28 - 35
25 - 30 - 35 - 40 - 45 - 50 - 60
22 - 28 - 36 - 45
22 - 28 - 36 - 45
25 - 35 - 45
35 - 40 - 45 - 50
25 - 30 - 32 - 40 - 50
25 - 32 - 40 - 45 - 50 - 60
28 - 36 - 45 - 56
30 - 35 - 40 - 45 - 50 - 55 - 60
28 - 36 - 45 - 56
40 - 45 - 50 - 60
32 - 40 - 50 - 63
32 - 40 - 45 - 50 - 60
40 - 55 - 70
50 - 60 - 90 - 120
50 - 60 - 70
90 - 120
40 - 50
90 -120
80 - 120
80 - 120
PTI Europa A/S