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Boston Gear F715-30-B5-G speed reducer, cast iron housing, C-face 56C input, 30:1 ratio

Boston Gear

Boston Gear F715-30-B5-G Speed Reducer 56C 30:1

SKU CH-4J28-PDR8T

Worm speed reducer with 30:1 ratio, 56C C-face input, 58 RPM maximum output speed and 277 in-lb maximum output torque

  • Delivers 277 in-lb output torque for demanding loads
  • 30:1 gear ratio reduces speed to 58 RPM maximum
  • Cast iron housing with hardened steel gears ensures durability
  • Tapered roller bearings handle 150 lb overhung load capacity
  • Mounts at any angle with 56C C-face motor frame

Speed Reducer for 56C Motors

The Boston Gear F715-30-B5-G is a worm-gear speed reducer built for 56C-frame motors. It provides a fixed 30:1 reduction ratio with a maximum output speed of 58 RPM. The unit delivers up to 277 in-lb of output torque and handles an overhung load capacity of 150 lb. Its cast-iron housing and tapered roller bearings suit industrial machinery requiring reliable speed reduction.

Verify Shaft and Mounting Details

Confirm your motor uses a 56C C-face mount to match the reducer's input connection. Ensure the driven equipment accepts a round output shaft and that the 1.54 in worm centre distance aligns with your layout. The base-to-centre height measures 1.91 in for mounting reference. The reducer mounts at any angle, but check that the 150 lb overhung load limit covers your application's radial force.

Sustained Operation Within Rated Limits

Under continuous load the reducer operates at its rated 0.3 hp maximum input horsepower. The hardened and ground steel worm gear works with tapered roller bearings to manage heat and wear during extended runs. Rotation is reversible in both clockwise and counter-clockwise directions. Performance remains stable when the 277 in-lb torque ceiling and 58 RPM output speed are not exceeded.

Highlights

  • Delivers 277 in-lb output torque for demanding loads
  • 30:1 gear ratio reduces speed to 58 RPM maximum
  • Cast iron housing with hardened steel gears ensures durability
  • Tapered roller bearings handle 150 lb overhung load capacity
  • Mounts at any angle with 56C C-face motor frame

Specifications

BrandBOSTON GEAR

Questions about this item

Does the speed reducer ship with lubricant or do I need to add it separately?

The reducer is supplied dry; transmission fluid must be purchased and filled before use.

How do I choose between the 56C frame and other frame sizes for this 30:1 reducer?

This unit is built for 56C frame motors only; other frame sizes require a different model.

What does the 30:1 ratio and 58 rpm output mean for a real conveyor or mixer drive?

At the rated input the output turns at 58 rpm with up to 277 in-lb torque and 150 lb overhung load capacity.

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