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Cast iron worm gear speed reducer with 56C C-face input, 20:1 ratio

Boston Gear

Boston Gear F7715-20-B5-G Speed Reducer 56C 20:1

SKU CH-CNA5-5X9VH

A 20:1 worm speed reducer with a 56C C-face input, 88 RPM maximum output speed and 295 in-lb torque capacity

  • Delivers 295 in-lb output torque for demanding loads
  • 20:1 reduction ratio provides precise speed control
  • Compatible with 56C motor frames for easy integration
  • Cast iron housing with hardened steel gears ensures durability
  • Operates at 88 RPM maximum output speed

Boston Gear Speed Reducer 56C 20:1

The Boston Gear F7715-20-B5-G is a worm-gear speed reducer built for a 56C motor frame. It provides a fixed 20:1 reduction ratio and is rated for a maximum input of 0.5 hp, delivering up to 295 in-lb of output torque.

Suitable for fixed-speed machinery needing

This unit suits equipment that requires a 20:1 ratio and can accept a C-face motor. It is not for applications needing a different ratio, a higher input horsepower, or an output speed above 88 RPM.

20:1 gear ratio defines the output speed

The single specification that decides fit is the 20:1 gear ratio, which sets the maximum output speed at 88 RPM and determines the torque multiplication for the driven load.

Highlights

  • Delivers 295 in-lb output torque for demanding loads
  • 20:1 reduction ratio provides precise speed control
  • Compatible with 56C motor frames for easy integration
  • Cast iron housing with hardened steel gears ensures durability
  • Operates at 88 RPM maximum output speed

Specifications

BrandBOSTON GEAR

Questions about this item

Which gear ratio suits my application?

The reducer has a fixed 20:1 ratio, delivering up to 88 RPM output and 295 in-lb torque when driven within its 0.5 hp input limit.

What output speed will I see with a standard motor?

At the rated maximum the output shaft turns at 88 RPM, so a 0.5 hp input yields that speed with 295 in-lb of torque.

Will the 56C C-face mount match my motor?

The unit is built for a 56C frame C-face motor, with a 1.54 in worm centre distance and 1.91 in base-to-centre height for direct mounting.

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