Series 21 - Classic V-Belt Drives
Fixed Center Drives - Drive Selection

 
Speed Selector home page

The Series 21 standard V-belt drives with controllable (C) and spring-footed (M) configurations may be applied in various combinations fo 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.

Series 21 - Drive Selection Table

3C/3M/350 CONTROL DRIVE SET
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
3C/6M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1/4 HP
514 - 1182
1200
1/6 HP
338 - 777
4C/4M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1/2 HP
875 - 3500
1200
1/3 HP
575 - 2300
4C/5M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1/2 HP
700 - 2230
1200
1/3 HP
460 - 1470
4C/6M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1/2 HP
580 - 1645
1200
1/3 HP
380 - 1080
4C/7M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1/2 HP
535 - 1365
1200
1/3 HP
350 - 900
4C/8-1-M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1/2 HP
455 - 1120
1200
1/3 HP
300 - 735
5C/5M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
3/4 HP
715 - 4290
1200
1/2 HP
470 - 2820
5C/6M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
3/4 HP
585 - 2710
1200
1/2 HP
385 - 1780
5C/7M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
3/4 HP
535 - 2130
1200
1/2 HP
350 - 1400
5C/8-1-M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
3/4 HP
455 - 1595
1200
1/2 HP
300 - 1050
6C/6M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1 HP
685 - 4650
1200
3/4 HP
450 - 3050
6C/7M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
/td>
1800
1 HP
630 - 3160
1200
3/4 HP
415 - 2075
6C/8-1-M/350 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
1 HP
535 - 2310
1200
3/4 HP
350 - 1515
7C/7M/750 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
2 HP
685 - 4450
1200
1 1/2 HP
450 - 2920
7C/8-1-M-750 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
2 HP
608 - 3040
1200
1 1/2 HP
400 - 2000
8-1-C/8-1-M/750 CONTROL DRIVE SET
MOTOR RPM
HP RATING
OUTPUT RPM
1800
5 HP
645 - 4820
1200
3 HP
425 - 3160
Series 21 Drives

1/4 thru 1 H.P.
2, 3, 5 H.P.

Series 21 Belt Selection Table