Boston Gear
Boston Gear F721-30-B5-G Speed Reducer 56C 30:1
A 30:1 worm speed reducer with 56C C-face input delivers 58 RPM maximum output speed and 624 in-lb torque
- 30:1 ratio delivers 58 RPM output speed
- 75 hp input handles demanding torque loads
- 624 in-lb output torque powers heavy equipment
- Cast iron housing ensures long service life
- 150 lb overhung load capacity supports radial forces
Speed Reducer for 56C Motors
The Boston Gear F721-30-B5-G is a worm-gear speed reducer built for a 56C motor frame. It provides a fixed 30:1 reduction ratio with clockwise or counter-clockwise rotation. The cast-iron housing mounts at any angle and uses tapered roller bearings on a hardened steel worm. Maximum output speed reaches 58 RPM.
Suits constant-torque drives up to 0.75 hp
This unit suits applications needing up to 624 in-lb of output torque and an overhung load capacity of 150 lb. It is not for buyers who need a higher gear ratio or greater input horsepower than 0.75 hp. Builders requiring a different motor frame size or a non-C-Face input connection should look at other models.
No accessories or software included
The supplier description lists only the reducer specifications and a California Proposition 65 warning for chemical exposure. No bundled accessories, mounting hardware, lubricants or software are mentioned. The product ships as the standalone speed reducer unit.
Highlights
- 30:1 ratio delivers 58 RPM output speed
- 75 hp input handles demanding torque loads
- 624 in-lb output torque powers heavy equipment
- Cast iron housing ensures long service life
- 150 lb overhung load capacity supports radial forces
Specifications
| Brand | BOSTON GEAR |
|---|
Questions about this item
What motor frame size must I already have to mount this 56C reducer?
You need a NEMA 56C frame motor with a C-face flange to bolt directly to the input.
Can the 30:1 worm gearing run in either direction with my existing shaft?
Yes, the reducer is rated for clockwise and counter-clockwise rotation on the round output shaft.
How do I confirm the unit is delivering the rated 624 in-lb torque after installation?
Measure output speed under load; at full 0.75 hp input it should turn at 58 RPM when producing rated torque.
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