RS120 1 1 / 2 ” Pitch
ANSI
Pitch
Roller
Width
Link Plate
Pin
U.S. TSUBAKI
No.
Diameter
Between Roller Link Plates
Diameter
P
R
W
T
H
h
D
Chain No. RS120
120
1.500
.875
1.000
.187
1.425
1.228
.437
Number
Transverse Standard Minimum Average Maximum Approx.
Number
❈
U.S. TSUBAKI
of
Pin
Pitch
Type
Ultimate
Tensile
Allowable
Weight lbs./ft.
of
Strands
of
Strength Strength
Load lbs.
Links
Pin
ANSI
lbs.
per
Standard
10 ft.
L 1 + L 2
L 1
L 2
L
C
Chain No. RS120 RS120-2 RS120- 3 RS120-4 RS120-5 RS120-6
lbs.
1 2 3 4 5 6
2.118
.980
1.138 2.031 2.929 3.823 4.719
2.197 4.063 5.850 7.638 9.425
Cottered 28,125 37,480 6,830 Cottered 56,250 74,960 11,560
3.98 7.86
3.905 1.874 5.701 2.772 7.488 3.665 9.280 4.561 11.067 5.455
Cottered 84,375 112,440 17,070 11.78 Riveted 112,500 149,920 22,530 15.70 Riveted 140,625 187,400 26,630 19.59 Riveted 168,750 224,880 31,410 23.49
1.789
80
5.612 11.213
Note: Refer to page A-23, "Selection for Slow Speed." ❈
Maximum Horsepower Ratings
Maximum Speed – Small Sprocket (rpm) 10 25 50 100 150 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 1500 1600 1700 1800 1900 2000 2100 Lubrication System A B C
No. of Teeth Small Spkt.
11 2.74 6.25 11.7 21.8 31.4 40.6 58.5 68.4 68.4 58.4 46.3 37.9 31.8 27.1 23.5 20.6 18.3 16.4 14.8 13.4 12.2 11.2 10.4 9.60 12 3.01 6.87 12.8 23.9 34.4 44.6 64.3 75.2 75.2 66.5 52.8 43.2 36.2 30.9 26.8 23.5 20.9 18.7 16.8 15.3 14.0 12.8 11.8 10.9 13 3.28 7.49 14.0 26.1 37.6 48.6 70.1 81.9 82.0 75.0 59.5 48.7 40.8 34.9 30.2 26.5 23.5 21.1 19.0 17.2 15.7 14.4 13.3 12.3 14 3.56 8.11 15.1 28.2 40.7 52.7 75.9 88.8 88.8 83.8 66.5 54.5 45.6 39.0 33.8 29.6 26.3 23.5 21.2 19.3 17.6 16.1 14.9 8.9 15 3.83 8.74 16.3 30.4 43.8 56.8 81.8 95.6 95.7 93.0 73.8 60.4 50.6 43.2 37.5 32.9 29.2 26.1 23.5 21.4 19.5 17.9 16.5 16 4.11 9.37 17.5 32.6 47.0 60.9 87.7 103 103 102 81.3 66.5 55.8 47.6 41.3 36.2 32.1 28.7 25.9 23.5 21.5 19.7 18.2 17 4.38 10.0 18.7 34.8 50.2 65.0 93.6 112 112 112 89.0 72.9 61.1 52.1 45.2 39.7 35.2 31.5 28.4 25.8 23.5 21.6 19.9 18 4.66 10.6 19.9 37.0 53.4 69.1 99.6 122 122 122 97.0 79.4 66.5 56.8 49.2 43.2 38.3 34.3 30.9 28.1 25.6 23.5 11.3 19 4.94 11.3 21.0 39.3 56.6 73.3 106 133 133 133 105 86.1 72.2 61.6 53.4 46.9 41.6 37.2 33.5 30.4 27.8 25.5 20 5.23 11.9 22.2 41.5 59.8 77.5 112 143 143 143 114 93.0 77.9 66.5 57.7 50.6 44.9 40.2 36.2 32.9 30.0 27.6 21 5.51 12.6 23.5 43.8 63.0 81.7 118 152 154 154 122 100 83.8 71.6 62.1 54.5 48.3 43.2 39.0 35.4 32.3 29.6 22 5.79 13.2 24.7 46.0 66.3 85.9 124 160 165 165 131 107 89.9 76.8 66.5 58.4 51.8 46.3 41.8 37.9 34.6 16.6 23 6.08 13.9 25.9 48.3 69.5 90.1 130 168 177 177 140 115 96.1 82.1 71.1 62.4 55.4 49.5 44.7 40.5 37.0 24 6.36 14.5 27.1 50.5 72.8 94.3 136 176 188 187 149 122 102 87.5 75.8 66.5 59.0 52.8 47.6 43.2 39.5 25 6.65 15.2 28.3 52.8 76.1 98.6 142 184 196 196 159 130 109 93.0 80.6 70.7 62.7 56.1 50.6 45.9 41.3 26 6.94 15.8 29.5 55.1 79.4 103 148 192 204 204 168 138 116 98.6 85.5 75.0 66.5 59.5 53.7 48.7 26.6 28 7.52 17.1 32.0 59.7 86.0 111 160 208 221 221 188 154 129 110 96.0 83.8 74.4 66.5 60.0 54.5 30 8.10 18.5 34.5 64.3 92.7 120 173 224 239 238 209 171 143 122 106 93.0 82.5 73.8 66.5 42.4 32 8.68 19.8 37.0 69.0 99.3 129 185 240 256 256 230 188 158 135 117 102 90.9 81.3 73.3 35 9.56 21.8 40.7 76.0 109 142 204 265 282 282 263 215 180 154 134 117 104 93.0 47.7
40 11.0 25.2 47.0 87.8 126 164 236 306 325 325 321 263 220 188 163 143 127 59.5 45 12.5 28.6 53.4 99.7 144 186 268 347 384 384 383 314 263 225 195 171 80.1
Note: 1. Multiply the value given above by the multiple strand factor (page A-22, Table II) in order to obtain the transmission horsepower of multiple strand chain. 2. For lubrication systems A, B & C, refer to page A-77 for explanation. Please consult U.S. Tsubaki for use of horsepower ratings to the right of the boundary line. 3. Refer to page A-22, “Procedures for Selecting Roller Chain.”
A-14
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