U.S. TSUBAKI RS ROLLER CHAIN
RS240 3 ” 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. RS240
240
3.000
1.875
1.875
.375
2.850
2.457
.937
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. RS240 RS240-2 RS240- 3 RS240-4 RS240-5 RS240-6
lbs.
1 2 3 4 5 6
4.071 7.531
1.886 3.618 5.348 7.079 8.809
2.185 3.913
4.201 7.811
Riveted 112,500 152,140 22,270 16.46 Riveted 225,000 304,280 37,850 32.32 Riveted 337,500 456,420 55,670 48.11 Riveted 450,000 608,560 73,490 63.90 Riveted 562,500 760,700 86,850 79.70 Riveted 675,000 912,840 102,440 95.49
10.984 14.453 17.913
5.636 11.272 7.374 14.732 9.104 18.189
3.458
40
21.370 10.539 10.831 21.657
Note: Refer to page A-23, "Selection for Slow Speed." ❈
Maximum Horsepower Ratings
Maximum Speed – Small Sprocket (rpm)
No. of Teeth Small Spkt.
5 10 15 20 25 30 40 50 60 80 100 125 150 175 200 250 300 350 400 450 500 Lubrication System A B C
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.” 24 22.2 41.4 59.7 77.3 94.5 111 144 176 208 269 329 402 474 531 531 531 504 483 25 23.2 43.3 62.4 80.8 98.8 116 151 184 217 281 344 421 496 550 550 550 520 496 26 24.2 45.2 65.1 84.3 103 121 157 192 227 294 359 439 517 561 561 561 532 510 11 9.56 17.8 25.7 33.3 40.7 48.0 62.1 76.0 89.5 116 142 173 204 235 265 271 271 228 188 156 12 10.5 19.6 28.2 36.6 44.7 52.7 68.3 83.5 98.3 127 156 190 224 258 291 298 298 260 213 13 11.5 21.4 30.8 39.9 48.8 57.5 74.4 91.0 107 139 170 208 245 281 317 325 325 294 240 14 12.4 23.2 33.4 43.2 52.8 62.2 80.6 98.6 116 150 184 225 265 304 343 353 353 329 268 15 13.4 24.9 35.9 46.6 56.9 67.1 86.9 106 125 162 198 242 285 328 370 380 380 363 298 16 14.3 26.7 38.5 49.9 61.0 71.9 93.1 114 134 174 212 260 306 352 397 401 401 361 329 17 15.3 28.6 41.1 53.3 65.1 76.8 99.5 122 143 186 227 277 327 375 402 402 402 377 359 18 16.3 30.4 43.8 56.7 69.3 81.7 106 129 152 197 241 295 348 399 406 406 406 390 377 19 17.3 32.2 46.4 60.1 73.5 86.6 112 137 162 209 256 313 368 423 425 425 425 408 393 20 18.2 34.0 49.0 63.5 77.6 91.5 119 145 171 221 270 331 389 443 443 443 443 424 408 21 19.2 35.9 51.7 67.0 81.8 96.4 125 153 180 233 285 348 411 463 463 463 463 440 421 22 20.2 37.7 54.3 70.4 86.1 101 131 161 189 245 300 366 432 464 464 464 459 455 422 23 21.2 39.6 57.0 73.9 90.3 106 138 169 199 257 314 384 453 496 496 496 481 469 448
A-19
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