No. 40
No. 50
1 / 2 ” PITCH
5 / 8 ” PITCH
D
D
R
R
L 2
L 2
H
h
W
H
h
W
L 1
L 1
P
P
P
P
T
T
L 2
L 2
L
C
L 2
L 2
C
C
C
C
L 1
L 1
L 1
L 1
C
L 1
L
L 1
L 1
L 1
P
Roll dia.
W
T
H
h
D
P
Roll dia.
W
T
H
h
D
50
0.625
0.400
0.375
0.080
0.591
0.512
0.200
40
0.500
0.312
0.312
0.060
0.472
0.409
0.156
Transverse Pitch C
ANSI Standard Min. Tensile Strength {lb}
Tsubaki Average Tensile Strength
Maximum Allowable Load
Approximate Mass lb/ft
Transverse Pitch C
ANSI Standard Min. Tensile Strength {lb}
Tsubaki Aver- age Tensile Strength
Maximum Allowable Load
Approxi- mate Mass lb/ft
TSUBAKI Chain Number
Number of Strands
TSUBAKI Chain Number
Number of Strands
L1+L2
L1
L2
L
Pin Type
L1+L2
L1
L2
L
Pin Type
50RB
1 2 3 4 5 6
0.874 1.594 2.307 3.020 3.732 4.449
0.406 0.762 1.118 1.474 1.831 2.189
0.469 0.833 1.189 1.545 1.902 2.260
0.890 1.646 2.358 3.075 3.787 4.504
Riveted Riveted Riveted Riveted Riveted Riveted
4,880 9,760
7,050
1,430 2,430 3,580 4,730 5,590 6,590
0.70 1.39 2.08 2.76 3.45 4.14
40RB
1
0.717
0.325
0.392
0.717
Riveted
3,125
4,290
810
0.43
50-2RB 50-3RB 50-4RB 50-5RB 50-6RB
14,100 21,150 28,200 35,250 42,300
40-2RB
2
1.283
0.608
0.675
1.319
Riveted
6,250
8,580
1370
0.85
14,640
0.713
40-3RB
3
1.843
0.892
0.951
1.886
Riveted
9,376
12,870
2020
1.28
-
0.566
40-4RB
4
2.409
1.177
1.232
2.453
Riveted
12,500
17,160
2670
1.7
-
-
40-5RB
5
2.980
1.461
1.520
3.024
Riveted
15,625
21,450
3150
2.12
Note: 1. “RB” designation indicates 10’ box riveted. Cottered, cut-to-length and reel stock available upon request. 2. Maximum allowable load when using a one-pitch offset link (OL) is 65% of the above. 3. Maximum allowable load when using a two-pitch offset link (2POL) is 100% of the above.
40-6RB
6
3.547
1.744
1.803
3.591
Riveted
18,750
25,740
3720
2.55
Note: 1. “RB” designation indicates 10’ box riveted. Cottered, cut-to-length and reel stock available upon request. 2. Maximum allowable load when using a one-pitch offset link (OL) is 65% of the above. 3. Maximum allowable load when using a two-pitch offset link (2POL) is 100% of the above.
No. of Small Sprocket Teeth Maximum Speed - Small Sprocket (RPM) 10 25 50 100 200 300 400 500 700 900 1000 1200 1400 1600 1800 2100 2400 2700 3000 3500 4000 5000 6000 7000 8000 Lubrication System A B C 11 0.16 0.38 0.71 1.33 2.48 3.58 4.64 5.66 7.67 9.62 10.6 10.3 8.14 6.65 5.58 4.43 3.62 3.04 2.59 2.07 1.68 1.41 1.21 1.05 0.93 12 0.19 0.42 0.78 1.46 2.72 3.93 5.10 6.22 8.42 10.6 11.6 11.7 9.27 7.59 6.36 5.04 4.13 3.46 2.95 2.35 1.92 1.61 1.37 1.19 1.05 13 0.20 0.46 0.86 1.60 2.98 4.28 5.55 6.79 9.19 11.5 12.7 13.2 10.4 8.56 7.16 5.70 4.65 3.90 3.33 2.64 2.16 1.81 1.56 1.34 - 14 0.21 0.50 0.93 1.73 3.22 4.64 6.01 7.35 9.95 12.5 13.7 14.8 11.7 9.56 8.02 6.36 5.20 4.36 3.73 2.95 2.43 2.02 1.73 1.50 - 15 0.23 0.54 0.99 1.86 3.47 5.00 6.48 7.93 10.7 13.4 14.8 16.4 13.0 10.6 8.89 7.05 5.77 4.83 4.13 3.27 2.68 2.25 1.92 1.66 - 16 0.25 0.58 1.07 2.00 3.73 5.36 6.95 8.49 11.5 14.3 15.8 18.0 14.3 11.7 9.79 7.76 6.36 5.32 4.55 3.61 2.95 2.47 2.11 1.84 - 17 0.27 0.62 1.14 2.13 3.97 5.73 7.42 9.07 12.3 15.4 16.9 19.7 15.7 12.8 10.7 8.50 6.96 5.83 4.99 3.96 3.23 2.71 2.31 2.01 - 18 0.28 0.66 1.22 2.27 4.22 6.09 7.89 9.64 13.0 16.4 18.0 21.2 17.0 13.9 11.7 9.27 7.59 6.36 5.42 4.30 3.53 2.95 2.52 - - 19 0.31 0.68 1.29 2.40 4.48 6.45 8.37 10.2 13.8 17.3 19.0 22.5 18.5 15.2 12.7 10.0 8.22 6.89 5.89 4.67 3.82 3.21 2.74 - - 20 0.32 0.72 1.35 2.53 4.73 6.83 8.84 10.8 14.6 18.4 20.1 23.7 20.0 16.4 13.7 10.8 8.89 7.44 6.36 5.04 4.13 3.46 2.95 - - 21 0.34 0.76 1.43 2.68 4.99 7.19 9.32 11.4 15.4 19.3 21.2 25.1 21.5 17.6 14.8 11.7 9.57 8.02 6.84 5.42 4.44 3.73 3.18 - - 22 0.35 0.80 1.50 2.82 5.24 7.56 9.80 12.0 16.2 20.4 22.4 26.3 23.1 18.8 15.8 12.5 10.2 8.60 7.34 5.82 4.76 4.00 3.41 - - 23 0.38 0.84 1.58 2.95 5.51 7.94 10.3 12.6 17.0 21.3 23.5 27.6 24.7 20.1 16.9 13.4 11.0 9.19 7.84 6.22 5.10 4.28 - - - 24 0.39 0.89 1.66 3.08 5.77 8.30 10.8 13.2 17.8 22.4 24.5 29.0 26.3 21.5 18.0 14.3 11.7 9.79 8.35 6.64 5.42 4.55 - - - 25 0.40 0.93 1.73 3.23 6.02 8.68 11.3 13.8 18.6 23.3 25.6 30.2 27.9 22.8 19.2 15.2 12.4 10.4 8.89 7.05 5.77 4.83 - - - 26 0.43 0.97 1.81 3.37 6.29 9.05 11.7 14.3 19.4 24.4 26.8 31.5 29.6 24.3 20.2 16.1 13.2 11.0 9.43 7.47 6.13 5.14 - - - 28 0.46 1.05 1.96 3.65 6.81 9.82 12.7 15.6 21.1 26.4 29.0 34.2 33.1 27.0 22.7 18.0 14.8 12.3 10.5 8.35 6.84 5.74 - - - 30 0.50 1.13 2.11 3.93 7.34 10.6 13.7 16.8 22.7 28.4 31.2 36.7 36.7 30.0 25.1 19.8 16.4 13.7 11.7 9.27 7.59 - - - - 32 0.54 1.21 2.27 4.21 7.87 11.3 14.6 18.0 24.3 30.4 33.5 39.4 40.4 33.3 27.8 22.0 18.0 15.2 12.9 10.2 8.35 - - - - 35 0.59 1.33 2.49 4.64 8.66 12.5 16.2 19.7 26.8 33.5 36.9 43.4 46.3 38.1 31.6 25.1 20.7 17.2 14.8 11.7 9.56 - - - - 40 0.67 1.54 2.87 5.36 10.0 14.5 18.6 22.8 31.0 38.8 42.6 50.3 56.5 46.4 38.8 30.7 25.1 21.1 18.0 14.3 - - - - - 45 0.76 1.74 3.27 6.09 11.4 16.4 21.2 25.9 35.1 44.0 48.4 57.0 65.6 55.1 46.1 36.6 30.0 25.1 21.5 - - - - - - Note:
Maximum Speed - Small Sprocket (RPM)
No. of Small Sprocket Teeth
10
25
50 100 200 300 400 500 700 900 1000 1200 1400 1600 1800 2100 2400 2700 3000 3500 4000 5000 6000 7000 8000 Lubrication System A B C
11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 28 30 32 35 40 45
0.08 0.09 0.09 0.11 0.11 0.12 0.13 0.13 0.15 0.16 0.16 0.17 0.17 0.19 0.20 0.20 0.23 0.24 0.25 0.28 0.32 0.38
0.19 0.20 0.23 0.24 0.25 0.28 0.30 0.31 0.34 0.35 0.38 0.39 0.42 0.43 0.44 0.47 0.51 0.55 0.59 0.64 0.75 0.84
0.35 0.38 0.42 0.44 0.48 0.52 0.55 0.59 0.62 0.66 0.70 0.72 0.76 0.80 0.83 0.87 0.95 1.02 1.09 1.21 1.39 1.58
0.64 0.71 0.76 0.83 0.90 0.97 1.03 1.10 1.17 1.23 1.29 1.35 1.42 1.49 1.56 1.62 1.77 1.90 2.04 2.24 2.59 2.95
1.21 1.31 1.43 1.56 1.68 1.80 1.92 2.04 2.17 2.29 2.41 2.53 2.67 2.79 2.91 3.04 3.30 3.55 3.81 4.20 4.84 5.50
1.73 1.90 2.07 2.24 2.41 2.59 2.76 2.95 3.12 3.30 3.47 3.66 3.84 4.02 4.20 4.39 4.75 5.11 5.48 6.03 6.97 7.93
2.24 2.47 2.68 2.91 3.14 3.35 3.58 3.81 4.05 4.28 4.51 4.73 4.98 5.20 5.44 5.67 6.14 6.62 7.09 7.82 9.04 10.3
2.74 3.00 3.29 3.55 3.84 4.10 4.39 4.67 4.95 5.23 5.51 5.79 6.07 6.36 6.65 6.93 7.51 8.10 8.68 9.56 11.1 12.5
3.70 4.08 4.44 4.81 5.19 5.55 5.93 6.32 6.69 7.07 7.46 7.84 8.22 8.61 9.00 9.39 10.2 11.0 11.7 12.9 14.9 17.0
4.65 5.11 5.57 6.03 6.50 6.97 7.44 7.91 8.39 8.86 9.35 9.83 10.3 10.8 11.3 11.8 12.8 13.7 14.8 16.2 18.8 21.3
5.11 5.62 6.13 6.64 7.15 7.66 8.18 8.70 9.23 9.75 10.3 10.8 11.3 11.9 12.4 12.9 14.1 15.2 16.2 17.8 20.7 23.5
6.02 6.61 7.21 7.82 8.42 9.03 9.64 10.2 10.9 11.5 12.1 12.7 13.4 13.9 14.6 15.3 16.5 17.8 19.0 21.1 24.3 27.6
6.81 7.60 8.29 8.97 9.67 10.4 11.1 11.8 12.5 13.2 13.9 14.6 15.3 16.1 16.8 17.6 19.0 20.4 21.9 24.1 27.9 31.6
5.58 6.36 7.16 8.01 8.88 9.79 10.7 11.7 12.7 13.7 14.8 15.8 16.9 18.0 18.9 19.7 21.5 23.1 24.7 27.2 31.5 35.7
4.67 5.31 5.99 6.71 7.43 8.18 8.97 9.76 10.5 11.1 12.4 13.2 14.1 15.0 16.0 17.0 19.0 21.1 23.2 26.6 32.5 38.6
3.70 4.22 4.76 5.31 5.89 6.49 7.11 7.75 8.41 9.08 9.76 10.5 11.2 11.9 12.7 13.5 15.0 16.8 18.4 21.1 25.7 30.6
3.03 3.45 3.89 4.36 4.83 5.31 5.82 6.34 6.88 7.43 7.99 8.57 9.16 9.76 10.4 11.0 12.3 13.5 15.0 17.2 21.1 25.1
2.55 2.90 3.26 3.65 4.04 4.45 4.88 5.31 5.77 6.22 6.71 7.19 7.68 8.18 8.70 9.24 10.3 11.4 12.6 14.3 17.6 21.1
2.15 2.47 2.79 3.11 3.45 3.81 4.17 4.55 4.92 5.31 5.73 6.13 6.56 7.00 7.43 7.89 8.81 9.76 10.8 12.3 15.0 18.0
1.72 1.96 2.21 2.47 2.74 3.02 3.31 3.61 3.92 4.22 4.55 4.87 5.20 5.54 5.89 6.25 7.00 7.75 8.54 9.76 11.9 14.2
1.41 1.60 1.81 2.02 2.24 2.47 2.71 2.96 3.21 3.45 3.71 3.98 4.26 4.55 4.83 5.12 5.73 6.34 7.00 7.99 9.76 11.7
1.01 1.14 1.29 1.45 1.60 1.77 1.94 2.11 2.29 2.47 2.66 2.86 3.06 3.25 3.45 3.66 4.09 4.55 5.00 5.73 7.00
0.76 0.87 0.98 1.10 1.22 1.34 1.48 1.60 1.74 1.88 2.02 2.17 2.32 2.47 2.63 2.76 3.11 3.45
0.62 0.68 0.78 0.87 0.97 1.07 1.17 1.27 1.38 1.49 1.60 1.72 1.84 1.96
0.50 0.58 0.64 0.71 0.79 0.87 0.97
- - - - - - - - - - - - - - -
- - - - - - - -
- - - -
-
Note: 1. When using one pitch offset links (OL), HP ratings are 80% of the above. Two pitch offset links (2POL) can be used at 100% of the above values. 2. Multiply the value given above by the multiple strand factor (page 251 Table 2) in order to obtain the transmission horsepower of multiple strand chain. 3. For lubrication systems A, B & C, refer to pages 257 & 258 for explanation. Please consult Tsubaki for use of horsepower ratings to the right of the boundary line. 4. Refer to page 251, “Procedures for Selecting Roller Chain.”
1. When using one pitch offset links (OL), HP ratings are 80% of the above. Two pitch offset links (2POL) can be used at 100% of the above values. 2. Multiply the value given above by the multiple strand factor (page 251 Table 2) in order to obtain the transmission horsepower of multiple strand chain. 3. For lubrication systems A, B & C, refer to pages 257 & 258 for explanation. Please consult Tsubaki for use of horsepower ratings to the right of the boundary line. 4. Refer to page 251, “Procedures for Selecting Roller Chain.”
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