No. 37, 38, 41
No. 35
1 / 2 ” PITCH
3 / 8 ” PITCH
D
B
H
h
L 2
H
h
W
P
P
L 1
P
P
T
D
R
L 2
L
W
L 1
L 2
L 2
C
T
C
L 1
L
L 1
C
P
Roll dia.
W
T
t1 Conn plate
H
h
D
L 1
L 1
37
0.500
0.307
0.134
0.039
0.047
0.386
0.331
0.143
38
0.500
0.307
0.189
0.043
0.047
0.386
0.331
0.143
41
0.500
0.306
0.251
0.049
0.049
0.386
0.331
0.141
Chain No.
P
B
W
T
H
h
D
ANSI Standard Min. Tensile Strength {lb}
TSUBAKI Chain Number
Tsubaki Average Tensile Strength
Maximum Allowable Load
Approximate Mass lb/ft
35
0.375
0.200
0.188
0.050
0.354
0.307
0.141
Number of Strands
L1+L2
L1
L
43RB
1
0.433
0.201
0.490
2,116
309
0.19
Number of Strands
Transverse Pitch C
ANSI Standard Min. Tensile Strength {lb}
Maximum Allowable Load
Approximate Mass lb/ft
TSUBAKI Chain Number
Tsubaki Average Tensile Strength
L1+L2
L1
L2
L
Pin Type
42RB
1
0.516
0.236
0.555
2,116
309
0.24
1,508
41RB
1
0.579
0.266
0.594
2,646
507
0.28
35RB
1 2 3
0.500 0.898 1.295
0.230 0.429 0.630
0.270 0.469 0.665
0.531 0.965 1.362
Riveted Riveted Riveted
1,760 3,520 7,590
2,530 5,070 7,600
480 810
0.22 0.46
Notes: 1. “RB” designation indicates 10’ box riveted. Cottered, cut-to-length and reel stock available upon request. 2. Maximum allowable load when using an M-type connecting link is 80% of the above.
35-2RB 35-3RB
0.399
1210
0.70
Notes: 1. “RB” designation indicates 10’ box riveted. Cottered, cut-to-length and reel stock available upon request. 2. Offset links for RS25 are only available in two-pitch offset links. The maximum allowable load is the same as shown in the table above.
No. of Small Sprocket Teeth Maximum Speed - Small Sprocket (RPM) - 41 Roller Chain 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 0.04 0.09 0.16 0.31 0.56 0.82 1.06 1.29 1.76 2.20 2.25 1.72 1.35 1.11 0.94 0.74 0.60 0.51 0.43 0.35 0.28 0.20 0.15 0.12 0.09 12 0.04 0.09 0.17 0.34 0.62 0.90 1.17 1.42 1.92 2.41 2.56 1.96 1.56 1.27 1.06 0.84 0.70 0.58 0.50 0.39 0.32 0.23 0.17 0.13 0.11 13 0.04 0.11 0.20 0.36 0.68 0.98 1.27 1.56 2.09 2.63 2.90 2.20 1.74 1.43 1.19 0.95 0.78 0.66 0.56 0.44 0.36 0.25 0.20 0.16 0.13 14 0.05 0.11 0.21 0.39 0.74 1.06 1.37 1.68 2.27 2.84 3.14 2.47 1.96 1.60 1.34 1.06 0.87 0.72 0.62 0.50 0.40 0.30 0.21 0.17 0.15 15 0.05 0.12 0.23 0.43 0.79 1.14 1.48 1.81 2.45 3.07 3.38 2.74 2.17 1.77 1.49 1.18 0.97 0.80 0.70 0.55 0.44 0.32 0.24 0.19 0.16 16 0.05 0.13 0.24 0.46 0.84 1.22 1.58 1.94 2.63 3.29 3.62 3.00 2.39 1.96 1.64 1.30 1.06 0.89 0.76 0.60 0.50 0.35 0.27 0.21 0.17 17 0.07 0.13 0.25 0.48 0.91 1.30 1.69 2.07 2.80 3.51 3.86 3.30 2.61 2.15 1.80 1.42 1.17 0.98 0.83 0.66 0.54 0.39 0.30 0.23 0.19 18 0.07 0.15 0.28 0.52 0.97 1.39 1.80 2.20 2.98 3.74 4.10 3.59 2.84 2.33 1.96 1.56 1.27 1.06 0.91 0.72 0.59 0.42 0.32 0.25 - 19 0.07 0.16 0.30 0.55 1.02 1.48 1.90 2.33 3.16 3.96 4.36 3.89 3.08 2.53 2.12 1.68 1.38 1.15 0.98 0.78 0.64 0.46 0.35 0.28 - 20 0.07 0.16 0.31 0.58 1.09 1.56 2.02 2.47 3.34 4.18 4.60 4.20 3.34 2.74 2.29 1.81 1.49 1.25 1.06 0.84 0.70 0.50 0.38 0.30 - 21 0.08 0.17 0.32 0.62 1.14 1.64 2.13 2.60 3.53 4.41 4.85 4.52 3.59 2.94 2.47 1.96 1.60 1.34 1.14 0.91 0.74 0.54 0.40 0.32 - 22 0.08 0.19 0.35 0.64 1.19 1.73 2.24 2.74 3.70 4.64 5.11 4.85 3.85 3.15 2.64 2.09 1.72 1.43 1.22 0.98 0.79 0.58 0.43 0.35 - 23 0.08 0.19 0.36 0.67 1.26 1.81 2.35 2.87 3.89 4.87 5.35 5.19 4.12 3.37 2.82 2.24 1.84 1.54 1.31 1.05 0.86 0.60 0.47 0.36 - 24 0.09 0.20 0.38 0.71 1.31 1.89 2.45 3.00 4.06 5.10 5.61 5.53 4.39 3.59 3.00 2.39 1.96 1.64 1.39 1.11 0.91 0.64 0.50 0.39 - 25 0.09 0.21 0.39 0.74 1.38 1.98 2.57 3.14 4.25 5.32 5.86 5.87 4.67 3.82 3.19 2.53 2.08 1.74 1.49 1.18 0.97 0.70 0.52 - - 26 0.09 0.21 0.42 0.76 1.43 2.07 2.68 3.27 4.44 5.57 6.12 6.24 4.95 4.05 3.39 2.70 2.20 1.85 1.58 1.25 1.02 0.74 0.56 - - 28 0.11 0.24 0.44 0.83 1.56 2.24 2.90 3.55 4.80 6.02 6.62 6.96 5.53 4.52 3.80 3.00 2.47 2.07 1.76 1.39 1.14 0.82 0.62 - - 30 0.11 0.25 0.48 0.90 1.68 2.41 3.12 3.82 5.18 6.49 7.13 7.72 6.13 5.02 4.20 3.34 2.74 2.29 1.96 1.56 1.27 0.91 0.70 - - 32 0.12 0.28 0.51 0.97 1.80 2.59 3.35 4.10 5.55 6.96 7.64 8.50 6.75 5.53 4.63 3.67 3.00 2.52 2.15 1.70 1.39 1.01 - - - 35 0.13 0.31 0.56 1.06 1.98 2.86 3.69 4.52 6.12 7.67 8.42 9.74 7.72 6.32 5.30 4.20 3.45 2.88 2.47 1.96 1.60 1.14 - - - 40 0.16 0.35 0.66 1.22 2.29 3.30 4.26 5.22 7.07 8.85 9.74 11.47 9.44 7.72 6.48 5.14 4.20 3.53 3.00 2.39 1.96 1.39 - - - 45 0.17 0.40 0.75 1.39 2.60 3.74 4.84 5.93 8.02 10.06 11.05 13.02 11.25 9.21 7.72 6.13 5.02 4.20 3.59 2.84 2.33 - - - - Note:
3. No offset links are available for BF25H. 4. RS25 and BF25H are bushed chains. *Maximum allowable load when using an M-type connecting link is 80% of the above.
Maximum Speed - Small Sprocket (RPM)
No. Of Small Sprocket Teet h
50 100 300 500 700 900 1200 1500 1800 2100 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000 7500 8000 8500 9000 10000 Lubrication System A B C 11 0.16 0.30 0.78 1.23 1.66 2.09 2.71 3.31 3.90 4.48 3.86 2.94 2.33 1.90 1.60 1.37 1.18 1.03 0.93 0.82 0.74 0.67 0.62 0.56 0.48 12 0.17 0.32 0.86 1.35 1.84 2.29 2.98 3.63 4.29 4.92 4.40 3.35 2.66 2.17 1.82 1.56 1.35 1.18 1.05 0.94 0.84 0.76 0.70 0.64 0.55 13 0.19 0.35 0.94 1.48 2.00 2.51 3.25 3.97 4.68 5.38 4.96 3.78 2.99 2.45 2.05 1.76 1.52 1.34 1.18 1.06 0.95 0.87 0.79 0.72 0.62 14 0.20 0.38 1.01 1.60 2.16 2.71 3.51 4.30 5.07 5.82 5.55 4.22 3.35 2.74 2.29 1.96 1.70 1.49 1.33 1.18 1.07 0.97 0.89 0.82 0.70 15 0.21 0.40 1.09 1.73 2.33 2.92 3.80 4.63 5.46 6.28 6.16 4.68 3.71 3.04 2.55 2.17 1.89 1.65 1.46 1.31 1.18 1.07 0.98 0.90 0.76 16 0.23 0.43 1.17 1.85 2.51 3.14 4.06 4.96 5.85 6.72 6.77 5.16 4.09 3.35 2.80 2.40 2.08 1.82 1.62 1.45 1.30 1.18 1.09 0.99 0.84 17 0.25 0.47 1.25 1.97 2.67 3.35 4.33 5.30 6.25 7.17 7.43 5.65 4.48 3.67 3.07 2.63 2.28 2.00 1.77 1.58 1.43 1.30 1.18 1.09 0.93 18 0.27 0.50 1.33 2.09 2.84 3.57 4.61 5.65 6.65 7.63 8.09 6.16 4.88 4.00 3.35 2.86 2.48 2.17 1.93 1.73 1.56 1.41 1.29 1.18 1.01 19 0.28 0.52 1.41 2.23 3.02 3.78 4.89 5.98 7.04 8.10 8.77 6.68 5.30 4.33 3.63 3.10 2.68 2.36 2.09 1.88 1.69 1.53 1.39 1.29 1.10 20 0.30 0.55 1.49 2.35 3.18 4.00 5.18 6.32 7.44 8.56 9.47 7.20 5.71 4.68 3.93 3.35 2.90 2.55 2.27 2.02 1.82 1.65 1.52 1.38 1.18 21 0.31 0.58 1.57 2.48 3.35 4.21 5.44 6.66 7.84 9.01 10.2 7.75 6.16 5.04 4.22 3.61 3.12 2.74 2.43 2.17 1.96 1.78 1.62 1.49 1.27 22 0.32 0.62 1.65 2.60 3.53 4.43 5.73 7.00 8.26 9.48 10.9 8.31 6.60 5.40 4.52 3.86 3.35 2.94 2.60 2.33 2.11 1.90 1.74 1.60 1.37 23 0.35 0.64 1.73 2.74 3.70 4.64 6.01 7.35 8.66 9.95 11.6 8.89 7.05 5.77 4.84 4.13 3.58 3.14 2.79 2.49 2.25 2.04 1.86 1.72 1.46 24 0.36 0.67 1.81 2.86 3.88 4.85 6.29 7.70 9.07 10.4 12.2 9.47 7.52 6.16 5.16 4.40 3.82 3.35 2.96 2.66 2.40 2.17 1.98 1.82 1.56 25 0.38 0.70 1.89 2.99 4.05 5.08 6.58 8.05 9.48 10.9 12.7 10.1 7.99 6.54 5.48 4.68 4.06 3.57 3.15 2.83 2.55 2.31 2.11 1.94 1.65 26 0.39 0.74 1.97 3.12 4.22 5.30 6.87 8.39 9.88 11.4 13.3 10.7 8.48 6.93 5.82 4.96 4.30 3.78 3.35 2.99 2.71 2.45 2.24 2.05 1.76 28 0.43 0.79 2.13 3.38 4.57 5.74 7.43 9.09 10.7 12.3 14.3 11.9 9.47 7.75 6.50 5.55 4.81 4.22 3.74 3.35 3.02 2.74 2.51 2.29 1.96 30 0.46 0.86 2.31 3.65 4.93 6.18 8.01 9.79 11.5 13.3 15.6 13.2 10.5 8.60 7.20 6.16 5.34 4.68 4.16 3.71 3.35 3.04 2.78 2.55 2.17 32 0.50 0.91 2.47 3.90 5.28 6.62 8.58 10.5 12.4 14.2 16.6 14.6 11.6 9.47 7.94 6.77 5.87 5.16 4.57 4.09 3.69 3.35 3.06 2.80 - 35 0.54 1.01 2.72 4.30 5.82 7.31 9.47 11.6 13.7 15.7 18.4 16.6 13.2 10.8 9.08 7.75 6.72 5.90 5.23 4.68 4.22 3.84 3.50 3.21 - 40 0.63 1.17 3.14 4.98 6.73 8.44 10.9 13.4 15.7 18.1 21.2 20.4 16.2 13.2 11.1 9.47 8.21 7.20 6.40 5.71 5.16 4.68 - - - 45 0.71 1.33 3.57 5.65 7.64 9.57 12.4 15.2 17.8 20.5 24.0 24.3 19.3 15.8 13.2 11.3 9.80 8.60 7.63 6.83 - - - - - 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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