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Cast iron worm speed reducer with 56C C-face input and round output shaft

Boston Gear

Boston Gear F718-15-B5-G Speed Reducer 56C 15:1

SKU CH-CC3D-R1QGE

Worm-gear speed reducer with a 15:1 ratio, 56C C-face input and 422 in-lb output torque

  • 56C motor frame fits standard NEMA mounts
  • 15:1 gear ratio reduces speed to 117 RPM output
  • 422 in-lb maximum torque handles heavy loads
  • Cast iron housing with tapered roller bearings
  • Mounts at any angle for flexible installation

Speed Reducer for 56C Motors

This worm-gear speed reducer accepts a C-face motor in frame 56C and delivers a 15:1 reduction ratio. It is built for industrial drives that require a compact right-angle gearbox with a hardened steel worm and tapered roller bearings.

Fits Any-Angle Mounting

The cast-iron housing mounts at any orientation and the 1.75 in worm center distance matches standard 56C bolt patterns. A 2.06 in base-to-center height clears common base plates while the round output shaft couples directly to driven equipment without extra adapters.

Sustained Output at 117 RPM

Continuous operation is rated for 1 hp input and 422 in-lb output torque at a maximum output speed of 117 RPM. Overhung load capacity reaches 150 lb on the output shaft, and the hardened gear set maintains torque delivery under steady load without thermal derating.

Highlights

  • 56C motor frame fits standard NEMA mounts
  • 15:1 gear ratio reduces speed to 117 RPM output
  • 422 in-lb maximum torque handles heavy loads
  • Cast iron housing with tapered roller bearings
  • Mounts at any angle for flexible installation

Specifications

BrandBOSTON GEAR

Questions about this item

What is the maximum output torque the F718-15-B5-G can deliver before it becomes the limiting factor?

The reducer is rated for a maximum output torque of 422 in-lb, which is the mechanical limit under sustained load.

How much heat and noise should be expected when the unit runs continuously at full load?

With a cast-iron housing, tapered roller bearings and hardened ground steel gears, the reducer dissipates heat through the housing and operates quietly for a worm-gear design.

Which motor frame must the buyer already have to bolt directly to the 56C input flange?

A NEMA 56C frame motor with a C-face mounting register is required for direct coupling to the reducer input.

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