The Series 21 standard V-belt drives with controllable (C) and spring-footed (M) configurations may be applied in various combinations to the 3 to 8 inch sizes to obtain the desired output speeds.
Horsepower range is fractional through 5 H.P. Exceptionally high ratios in the larger diameter drives are made available due to the interlocking face design of these pulleys.
Drive Selection Table
|
MOTOR RPM
|
HP RATING
|
OUTPUT RPM
|
|
1800
|
1/4 HP
|
986 – 3107
|
|
1200
|
1/6 HP
|
648 – 2042
|
|
3C/4M/350 CONTROL DRIVE SET
|
||
|
MOTOR RPM
|
HP RATING
|
OUTPUT RPM
|
|
1800
|
1/4 HP
|
789 – 2152
|
|
1200
|
1/6 HP
|
519 – 1414
|
|
3C/5M/350 CONTROL DRIVE SET
|
||
|
MOTOR RPM
|
HP RATING
|
OUTPUT RPM
|
|
1800
|
1/4 HP
|
623 – 1526
|
|
1200
|
1/6 HP
|
409 – 1003
|
|
1800
|
1/4 HP
|
514 – 1182
|
|
1200
|
1/6 HP
|
338 – 777
|
|
1800
|
1/2 HP
|
875 – 3500
|
|
1200
|
1/3 HP
|
575 – 2300
|
 |
||
|
1800
|
1/2 HP
|
700 – 2230
|
|
1200
|
1/3 HP
|
460 – 1470
|
|
|
||
|
1800
|
1/2 HP
|
580 – 1645
|
|
1200
|
1/3 HP
|
380 – 1080
|
|
1800
|
1/2 HP
|
535 – 1365
|
|
1200
|
1/3 HP
|
350 – 900
|
|
1800
|
1/2 HP
|
455 – 1120
|
|
1200
|
1/3 HP
|
300 – 735
|
|
1800
|
3/4 HP
|
715 – 4290
|
|
1200
|
1/2 HP
|
470 – 2820
|
|
|
||
|
1800
|
3/4 HP
|
585 – 2710
|
|
1200
|
1/2 HP
|
385 – 1780
|
|
1800
|
3/4 HP
|
535 – 2130
|
|
1200
|
1/2 HP
|
350 – 1400
|
|
1800
|
3/4 HP
|
455 – 1595
|
|
1200
|
1/2 HP
|
300 – 1050
|
|
1800
|
1 HP
|
685 – 4650
|
|
1200
|
3/4 HP
|
450 – 3050
|
|
/td> |
||
|
1800
|
1 HP
|
630 – 3160
|
|
1200
|
3/4 HP
|
415 – 2075
|
|
|
||
|
1800
|
1 HP
|
535 – 2310
|
|
1200
|
3/4 HP
|
350 – 1515
|
|
1800
|
2 HP
|
685 – 4450
|
|
1200
|
1 1/2 HP
|
450 – 2920
|
|
1800
|
2 HP
|
608 – 3040
|
|
1200
|
1 1/2 HP
|
400 – 2000
|
|
1800
|
5 HP
|
645 – 4820
|
|
1200
|
3 HP
|
425 – 3160
|
|
|
||