User Manual User Manual

AC Induction Motors 13
Table C
Constants for Calculating the Minimum Sheave Diameters for V-Belt Drives
Shaft Loads - Axial and Radial
These motors are suitable for limited shaft loads as shown in Tables D
and
E. Recommended maximum thrust loads depend on the mounting
position, either horizontal or vertical. For recommendations for loads
in excess of those shown, contact Allen-Bradley.
Table D
Axial Thrust Capacity - No Radial Load
1
Thrust capacity for vertical mounting includes a constant whose value is plus or minus depending on the direction of the thrust load. The constant is plus for thrust loads
acting upward against the force of gravity and minus for loads acting downward with gravity.
Frame Units
“V”
Dimension Constant
Base RPM
850 1150 1750 2500
L210 inches 3.50 A 40.6 30.0 19.77 14.63
B 7.26 5.43 3.56 2.09
millimeters 88.9 C 1384 1022 674 499
D 9.73 7.28 4.77 2.80
L250 inches 4.00 A 23.33 18.25 12.67 9.47
B 3.58 2.3 1.17 0.57
millimeters 101.6 C 795 622 432 323
D 4.80 3.08 1.57 0.76
L280 inches 4.50 A 20.28 16.17 11.2 8.32
B 2.94 1.75 0.84 0.43
millimeters 114.3 C 691 551 382 284
D 3.94 2.35 1.13 0.58
L320 inches 5.00 A 18.47 14.25 9.97 –
B 2.00 1.24 0.59 –
millimeters 127.0 C 630 486 340 –
D 2.68 1.66 0.79 –
UL360 inches 6.25 A 10.42 8.08 5.89 –
B 0.46 0.25 0.13 –
millimeters 158.8 C 355 275 201 –
D 0.62 0.34 0.17 –
UL400 inches 8.00 A 8.9 6.9 4.8 –
B 0.30 0.23 0.16 –
millimeters 203.2 C 303 235 163 –
D 0.40 0.31 0.21 –
Frame Units
Horizontal Mounting Vertical Mounting
2500 RPM 1750 RPM 1150 RPM 850 RPM 2500 RPM 1750 RPM 1150 RPM 850 RPM
L180 pounds 430 500 600 675 430 ±60 500 ±60 600 ±60 675 ±62
kilograms 195 227 272 306 198 ±27 227 ±27 272 ±27 306 ±27
L210 pounds 477 551 662 742 498 ±61 564 ±61 676 ±61 756 ±61
kilograms 217 251 301 338 227 ±28 257 ±28 308 ±28 344 ±28
L250 pounds 509 600 722 828 541 ±86 629 ±86 755 ±86 865 ±86
kilograms 231 272 327 376 245 ±39 285 ±39 342 ±39 392 ±39
L280 pounds 590 700 850 975 644 ±122 754 ±122 905 ±122 1038 ±122
kilograms 268 318 386 442 292 ±56 342 ±56 411 ±56 471 ±56
L320 pounds 705 835 1020 1170 770 ±175 905 ±175 1095 ±175 1250 ±175
kilograms 320 379 463 531 349 ±80 411 ±80 497 ±80 567 ±80
L360 pounds 875 1075 1350 1525 830 ±293 1020 ±293 1300 ±293 1475 ±293
kilograms 397 488 612 692 376 ±133 463 ±133 590 ±133 669 ±133
L400 pounds 1350 1630 2000 2250 1470 ±352 1820 ±352 2210 ±352 2475 ±352
kilograms 612 740 908 1021 667 ±160 826 ±160 1003 ±160 1123 ±160
L440 pounds 1300 1550 1800 2050 1365 ±1085 1600 ±1085 1865 ±1085 2080 ±1085
kilograms 590 703 816 930 619 ±492 726 ±492 846 ±492 943 ±492