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.
How it compares
Measured against everything we stock in Transmission Fluid & Gear Oil, at today’s prices. Recalculated every night.
- Price $782.99
- Pricier than about 93% of the 118 comparable items (median $40.99).
Specifications
| Product | |
|---|---|
| Brand name | 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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