We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Cast iron worm gear speed reducer, C-face 56C input, 50:1 ratio

Boston Gear

Boston Gear F715-50-B5-G Speed Reducer 50:1 56C

SKU CH-KC0T-AXFPV

A 50:1 worm speed reducer with a 56C motor frame, delivering up to 35 RPM and 315 in-lb torque from 0.25 hp input

  • 50:1 ratio cuts speed to 35 RPM for precise control
  • C-Face 56C mount fits standard NEMA motors directly
  • Cast iron housing with tapered roller bearings handles 315 in-lb output
  • 25 hp input rating suits light-duty automation tasks
  • Worm gear design allows CW/CCW rotation at any mounting angle

Boston Gear F715-50-B5-G Speed Reducer

The Boston Gear F715-50-B5-G is a worm-gear speed reducer with a 50:1 ratio and a C-face input for 56C frame motors. It delivers a maximum output speed of 35 RPM and a maximum output torque of 315 in-lb. The cast-iron housing mounts at any angle and uses tapered roller bearings. Maximum input horsepower is 0.25 hp.

Suitable for fixed-ratio reduction on 56C motors

This unit suits applications needing a 50:1 reduction where the motor frame matches the 56C C-face pattern and the load stays within 315 in-lb. It is not for buyers who need a different gear ratio, a higher input horsepower rating, or an input connection other than C-face 56C. Overhung loads above 150 lb also fall outside its rating.

No bundled accessories or software included

The product ships as the speed reducer alone; no mounting hardware, lubricant, or software is bundled. Installation requires separate hardware compatible with the 1.54 in worm center distance and 1.91 in base-to-center dimensions. California Proposition 65 warnings apply for cancer and reproductive harm.

Highlights

  • 50:1 ratio cuts speed to 35 RPM for precise control
  • C-Face 56C mount fits standard NEMA motors directly
  • Cast iron housing with tapered roller bearings handles 315 in-lb output
  • 25 hp input rating suits light-duty automation tasks
  • Worm gear design allows CW/CCW rotation at any mounting angle

Specifications

BrandBOSTON GEAR

Questions about this item

What motor frame size must I already have to mount this 56C speed reducer?

The unit is built for a NEMA 56C frame motor with a C-face input connection.

Will the 1.54 in worm center distance and 1.91 in base-to-center height line up with my existing mounting plate?

Those dimensions set the shaft height and spacing; compare them to your current plate pattern before ordering.

How can I confirm the reducer is delivering the rated 315 in-lb output torque after installation?

Run the motor at full load and verify the output shaft turns at 35 rpm with no abnormal noise or heat.

Also in this aisle

People compared these

Same shelf, same checkout — eight coins and a 30-minute rate lock.