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Cast iron speed reducer, 56C C-face, 60:1 ratio

Boston Gear

Boston Gear F7721-60-B5-G Speed Reducer 56C 60:1

SKU CH-22Q7-RN9GT

Worm-gear speed reducer with a 56C C-face input, 60:1 ratio, 29 RPM maximum output and 670 in-lb torque capacity

  • Delivers 670 in-lb output torque for demanding loads
  • 60:1 ratio reduces speed to 29 RPM maximum
  • 56C C-face mounting fits standard NEMA motors
  • Cast-iron housing with tapered-roller bearings handles 150 lb overhung load
  • Hardened and ground steel worm gear rated for 0.5 hp input

Speed Reducer 56C 60:1

This Boston Gear speed reducer is built for machinery that needs a fixed 60:1 reduction from a 56C-frame motor. It suits conveyors, mixers and other equipment requiring high torque at low output speed.

Maximum Output Torque 670 in-lb

The unit delivers up to 670 in-lb of output torque while the input is limited to 0.5 hp. At 29 RPM maximum output speed it handles steady loads, but continuous duty above the rated horsepower will exceed its capacity.

Worm Center Distance 2.06 in

The 2.06 in worm center distance and cast-iron housing set the mechanical envelope for mounting. Overhung load is rated at 150 lb, so radial forces beyond that require additional support.

Highlights

  • Delivers 670 in-lb output torque for demanding loads
  • 60:1 ratio reduces speed to 29 RPM maximum
  • 56C C-face mounting fits standard NEMA motors
  • Cast-iron housing with tapered-roller bearings handles 150 lb overhung load
  • Hardened and ground steel worm gear rated for 0.5 hp input

Specifications

BrandBOSTON GEAR

Questions about this item

Will the 56C C-face input on this reducer match the NEMA 56C frame motor I already have?

Yes — the unit is built for a 56C frame motor with a C-face input connection, so your existing motor bolts directly to the reducer.

How can I verify the reducer is running correctly once installed?

With the motor at full speed the output shaft should turn at about 29 RPM, and the reducer is rated for up to 670 in-lb of output torque and 150 lb overhung load.

What comes in the box and what must I supply separately?

The speed reducer itself is supplied; you will need to provide the 56C frame motor, mounting hardware, and the appropriate lubricant for the cast-iron housing.

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