U.S. TSUBAKI RS ROLLER CHAIN
RS180 2 1 / 4 ” 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. RS1 8 0
180
2.250
1.406
1.406
.281
2.134
1.843
.687
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. RS1 8 0 RS1 8 0-2 RS1 8 0- 3 RS1 8 0-4 RS1 8 0-5 RS1 8 0-6
lbs.
1 2 3 4 5 6
3.075 1.404 1.671 5.674 2.707 2.967 8.276 4.004 4.272
3.173 5.949 8.539
Cottered 63,280 80,480 13,670
9.04
Cottered 126,560 160,960 23,230 17.82 Cottered 189,840 241,440 34,170 25.68 Riveted 253,120 321,920 45,110 34.20 Riveted 316,400 402,400 53,310 42.73 Riveted 379,680 482,880 62,880 51.25
2.592
54
10.870 5.301 5.569 11.134 13.464 6.598 6.866 13.724 16.059 7.896 8.163 16.315
Note: Refer to page A-23, "Selection for Slow Speed." ❈
Maximum Horsepower Ratings
Maximum Speed – Small Sprocket (rpm) 10 25 50 100 150 200 250 300 350 400 450 500 550 600 650 700 750 800 850 900 950 1000 1050 1100 1150 Lubrication System A B C
No. of Teeth Small Spkt.
11 8.22 18.8 35.0 65.3 94.1 122 149 152 152 148 124 106 92.0 80.8 71.6 64.1 57.8 52.5 47.9 44.0 40.5 37.5 34.9 32.5 12 9.03 20.6 38.4 71.7 103 134 164 169 169 169 142 121 105 92.0 81.6 73.0 65.9 59.8 54.6 50.1 46.2 42.8 39.8 37.1 13 9.85 22.5 41.9 78.2 113 146 178 190 190 191 160 136 118 104 92.0 82.4 74.3 67.4 61.5 56.5 52.1 48.2 44.8 14 10.7 24.3 45.4 84.7 122 158 193 213 213 213 179 152 132 116 103 92.0 83.0 75.3 68.8 63.1 58.2 53.9 50.1 15 11.5 26.2 48.9 91.3 131 170 208 236 236 236 198 169 147 129 114 102 92.0 83.5 76.3 70.0 64.6 59.8 55.6 16 12.3 28.1 52.4 97.9 141 183 223 256 256 256 218 186 161 142 126 112 101 92.0 84.0 77.1 71.1 65.9 61.2 17 13.2 30.0 56.0 104 151 195 238 270 270 270 239 204 177 155 138 123 111 101 92.0 84.5 77.9 72.1 18 14.0 31.9 59.6 111 160 207 254 290 290 290 260 222 193 169 150 134 121 110 100 92.0 84.9 78.6 19 14.8 33.8 63.1 118 170 220 269 307 307 307 282 241 209 183 163 146 131 119 109 99.8 92.0 85.2 20 15.7 35.8 66.7 125 179 232 284 326 326 326 305 260 226 198 176 157 142 129 117 108 99.4 92.0 21 16.5 37.7 70.4 131 189 245 299 343 343 343 328 280 243 213 189 169 152 138 126 116 107 99.0 22 17.4 39.6 74.0 138 199 258 315 361 361 361 352 300 260 228 203 181 163 148 135 124 115 23 18.2 41.6 77.6 145 209 270 330 378 378 378 376 321 278 244 217 194 175 159 145 133 123 24 19.1 43.5 81.3 152 218 283 346 401 401 401 401 342 297 260 231 207 186 169 154 142 131 25 20.0 45.5 84.9 158 228 296 362 426 426 426 426 364 315 277 245 220 198 180 164 151 139 26 20.8 47.5 88.6 165 238 309 377 444 452 452 452 386 334 294 260 233 210 191 174 160 28 22.5 51.4 96.0 179 258 334 409 481 506 506 506 431 374 328 291 260 235 213 195 179 30 24.3 55.4 103 193 278 360 440 519 561 561 561 478 415 364 323 289 260 236 216 198 32 26.0 59.4 111 207 298 386 472 556 601 601 601 527 457 401 355 318 287 260 238 35 28.7 65.5 122 228 328 425 520 613 662 662 662 603 522 458 407 364 328 291 220
40 33.1 75.6 141 263 379 491 601 676 676 676 676 621 575 524 465 398 325 244 45 37.6 85.9 160 299 431 558 682 739 739 739 680 632 578 514 441 361 271
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-17
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