Rex® 7725 (MTW) MatTop® Chain with Two Drive Pockets
7725 (MTW)
Chain Drawing
DIRECTION
OF TRAVEL
CL
Sprocket Pocket
Location
1.25 in
(31.8 mm)
Chain Width
Sprocket Pocket
Location
2.00 in
(50.8 mm)
CL
Chain Height
0.50 in
(12.7 mm)
Chain Width
desc
in
mm
4-1/2
4.50
114.3
Chain Information
Number of Sprocket
Pockets
2 (‡ See Note 4)
Min. Back-flex Radius
1.00 in
(25.4 mm)
Chain Strength
lbs
N
1,025
4,559
Chain Bottom
to Centerline
0.25 in
(6.4 mm)
Chain is shown in High Performance (HPTM) material.
Chain Pitch
1.00 in
(25.4 mm)
Available Materials
Prefix
AS
HP™
WHP
WSM
Chain
Material
Standard
Pin Material
Anti-Static
High Performance
White High Performance
White Cut Resistant
Polyester
Polyester
Polyester
Polyester
min
0
-40
-40
-40
Temperature
Fahrenheit
max
min
dry
wet
+180 +150
-18
+180 +150
-40
+180 +150
-40
+180 +150
-40
Celsius
max
dry
wet
+82
+66
+82
+66
+82
+66
+82
+66
Approximate
Weight
lbs/ft2
2.67
2.67
2.67
2 .6 7
kg/m2
13.03
13.03
13.03
13.03
FDA
Approval
!
!
!
Standard materials are highlighted. All other materials are available on a made-to-order basis.
Chain strength is based on acetal-based materials and listed at room temperature. NR = Not Recommended.
Regulatory Information
The Food and Drug Administration (FDA) accepts certain materials for direct food
contact. FDA approved material is compliant to FDA 21 CFR § 177.
1. Stocked in 120 pitch, 10 ft (3.048 m) length strands.
2. Open area = 3.0%.
3. Stainless steel pins are available on a made-to-order basis.
4. ‡ One KUS7720 sprocket is recommended for use with this chain. Two NS7700 or
two SSS7700 sprockets may also be used.
Rex ® 7720 Series MatTop ® Chain Product Portfolio
MT - 7720 - 1
Molded-to-Width
Rexnord, Rex, MatTop, TwistLock and HP are trademarks of Rexnord Industries, Inc.
All rights reserved.
Additional Notes
Chain Drawing
DIRECTION
OF TRAVEL
CL
Sprocket Pocket
Location
1.25 in
(31.8 mm)
Chain Width
Sprocket Pocket
Location
2.00 in
(50.8 mm)
CL
Chain Height
0.50 in
(12.7 mm)
Chain is shown in High Performance (HPTM) material.
Chain Width
desc
in
mm
4-1/2
4.50
114.3
Chain Information
Number of Sprocket
Pockets
2 (‡ See Note 4)
Min. Back-flex Radius
1.00 in
(25.4 mm)
Chain Strength
lbs
N
1,025
4,559
Chain Bottom
to Centerline
0.25 in
(6.4 mm)
Rex® 7726 (MTW) MatTop® Chain with Two Drive Pockets
7726 (MTW)
Chain Pitch
1.00 in
(25.4 mm)
Available Materials
Prefix
AS
HP™
WHP
WSM
Chain
Material
Standard
Pin Material
Anti-Static
High Performance
White High Performance
White Cut Resistant
Polyester
Polyester
Polyester
Polyester
min
0
-40
-40
-40
Temperature
Fahrenheit
max
min
dry
wet
+180 +150
-18
+180 +150
-40
+180 +150
-40
+180 +150
-40
Celsius
max
dry
wet
+ 82
+66
+ 82
+66
+82
+66
+ 82
+66
Approximate
Weight
lbs/ft2
2.59
2.59
2.59
2.59
kg/m2
12.66
12.66
12.66
12.66
FDA
Approval
!
!
!
Standard materials are highlighted. All other materials are available on a made-to-order basis.
Chain strength is based on acetal-based materials and listed at room temperature. NR = Not Recommended.
Regulatory Information
Molded-to-Width
The Food and Drug Administration (FDA) accepts certain materials for direct food
contact. FDA approved material is compliant to FDA 21 CFR § 177.
Rexnord, Rex, MatTop, TwistLock and HP are trademarks of Rexnord Industries, Inc.
All rights reserved.
Additional Notes
1. Stocked in 120 pitch, 10 ft (3.048 m) length strands.
2. Open area = 9.0%.
3. Stainless steel pins are available on a made-to-order basis.
4. ‡ One KUS7720 sprocket is recommended for use with this chain. Two NS7700 or
two SSS7700 sprockets may also be used.
MT - 7720 - 2
Rex ® 7720 Series MatTop ® Chain Product Portfolio
SSS7700 Stainless Steel Split Sprocket
0.49 in
(12.4 mm)
Face
Width
effect
16
18
21
in
5 .1 2 6
5 .7 5 9
6 .7 1 0
mm
1 3 0 .2 0
1 4 6 .2 8
1 7 0 .4 3
in
5.14
5.78
6.72
mm
130.6
146.8
170.7
Bore Diameter
Pitch Diameter
Outside Diameter
Bore Diameter
Pitch Diameter
Outside Diameter
Outside
Diameter
Length
thru Bore
1.88 in
(47.6 mm)
KUS7720 Thermoplastic Split Sprocket Information
Bore Diameter (Shaft-Ready)
Round
Square
in
mm
in
mm
min
max
min
max
min
max
min
max
1
2
25
50
1
2
25
50
1
2-1/2
25
60
-
Length
thru Bore
2.00 in
(50.8 mm)
Bore Diameter (Idler)
in
min
1
1
1
Approximate
Weight
mm
max
2-1/4
2-1/4
3
min
25
25
25
max
55
55
75
lbs
1.5
2.0
2.8
kg
0.68
0.91
1.27
‡ One KUS7720 sprocket is recommended for use with these chains. Shaft-ready round bores are shipped with keyway and setscrews. Metric shaft-ready round bores are shipped with metric hardware, but without setscrews.
Number
of Teeth
actual
16
18
21
effect
16
18
21
Pitch
Diameter
in
5 .1 2 6
5 .7 5 9
6 .7 1 0
mm
1 3 0 .2 0
1 4 6 .2 8
1 7 0 .4 3
Outside
Diameter
in
5.14
5.78
6 .7 2
mm
130.6
146.8
170.7
SSS7700 Stainless Steel Split Sprocket Information
Bore Diameter (Shaft-Ready)
Ro u n d *
Square
in
mm
in
mm
min
max
min
max
min
max
min
max
1
2
25
50
1
1
25
25
1
2
25
50
1
1
25
25
1
2-1/2
25
60
1
3-1/2 *
25
90 *
Bore Diameter (Round)
in
min
1
1
1
mm
max
2
2
3-1/2
min
25
25
25
max
50
50
60
Approximate
Weight
lbs
3.50
5.00
6.00
kg
1.59
2.27
2.72
Shaft-ready round bores are shipped with keyway and setscrews. Metric shaft-ready round bores are shipped with metric hardware, but without setscrews.
* The 3-1/2 in and 90 mm bores for the 21 tooth square bore sprocket and all round bore sprockets above 1-1/2 in. (40 mm) are supplied as molded bores. All other bores are supplied with split bore adapters.
Number
of Teeth
actual
16
18
21
31
effect
16
18
21
31
Pitch
Diameter
in
5 .1 2 6
5 .7 5 9
6 .7 1 0
9 .8 8 5
mm
1 3 0 .2 0
1 4 6 .2 8
1 7 0 .4 3
251.08
Outside
Diameter
in
5.14
5.78
6.72
9.93
mm
130.6
146.8
170.7
252.2
NS7700 Thermoplastic Split Sprocket Information
Bore Diameter (Shaft-Ready)
Ro u n d *
Square
in
mm
in
mm
min
max
min
max
min
max
min
max
1
1-5/8
25
40
1
1-5/8
25
40
1
2-1/2
25
60
1
3-1/2 *
25
90 *
1
3-1/2
25
90
1
4-1/2 ** 25
120 **
Bore Diameter (Idler)
in
min
1
1
1
1
Approximate
Weight
mm
max
1-5/8
1-5/8
2-1/2
3-1/2
min
25
25
25
25
max
40
40
60
90
lbs
0.73
0.84
0.97
3.72
kg
0.33
0.38
0.44
1.69
Shaft-ready round bores are shipped with keyway and setscrews. Metric shaft-ready round bores are shipped with metric hardware, but without setscrews. Idler bores are designed to spin freely on the shaft without keyway or setscrews.
* The 3-1/2 in and 90 mm bores for the 21 tooth square bore sprocket and all round bore sprockets above 1-1/2 in. (40 mm) are supplied as molded bores. All other bores are supplied with split bore adapters.
** The 4-1/2 in and 120 mm bores for the 31 tooth square bore sprocket are supplied as molded bores. All other bores are supplied with split bore adapters.
Rex ® 7720 Series MatTop ® Chain Product Portfolio
MT - 7720 - 3
Rex® 7720 Series MatTop® Chain Compatible Sprockets
actual
16
18
21
Pitch
Diameter
0.49 in
(12.4 mm)
Face
Width
0.41 in
(10.5 mm)
Face
Width
Length
thru Bore
2.75 in
(69.9 mm)
Number
of Teeth
NS7700 Thermoplastic Split Sprocket
Bore Diameter
Pitch Diameter
Outside Diameter
KUS7720 Thermoplastic Split Sprocket