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Cast iron worm speed reducer with C-face motor mount and round output shaft

Boston Gear

Boston Gear F710-40-B4-G Speed Reducer C-Face 42CZ 40:1 Ratio

SKU CH-FC59-QGAH6

C-Face worm speed reducer with a 40:1 ratio delivering up to 44 RPM output and 128 in-lb torque for 42CZ motor frames

  • Delivers precise 40:1 reduction for controlled motion
  • C-Face 42CZ input mounts directly to standard motors
  • Hardened steel worm gear ensures durable torque transfer
  • Cast iron housing with tapered roller bearings handles 150 lb overhung load
  • Rated 0.16 hp input and 128 in-lb output torque

Speed Reducer for 42CZ Frame Motors

The Boston Gear F710-40-B4-G is a worm-gear speed reducer built for a NEMA 42CZ motor frame. It provides a 40:1 reduction ratio with a C-face input connection for direct mounting. The unit accepts bidirectional rotation and installs at any angle to suit the layout.

Cast-Iron Housing with Tapered Roller Bearings

The housing uses cast iron and contains tapered roller bearings to handle a 150 lb overhung load. A 1 in worm center distance and 1.31 in base-to-center height set the mounting footprint. The hardened and ground steel worm gear transmits up to 0.16 hp input for 128 in-lb output torque.

Round Output Shaft Ready for Couplings

The round output shaft turns at a maximum of 44 RPM and fits standard couplings, pulleys or sprockets. No mounting hardware or lubricant is included with the reducer. California Proposition 65 warnings apply for cancer and reproductive harm.

Highlights

  • Delivers precise 40:1 reduction for controlled motion
  • C-Face 42CZ input mounts directly to standard motors
  • Hardened steel worm gear ensures durable torque transfer
  • Cast iron housing with tapered roller bearings handles 150 lb overhung load
  • Rated 0.16 hp input and 128 in-lb output torque

Specifications

BrandBOSTON GEAR

Questions about this item

How long can the reducer run at 0.16 hp before overheating?

The 0.16 hp input rating is a continuous thermal limit; sustained operation at or below this power will not cause overheating.

What is the typical noise and heat level when the unit runs continuously at 44 RPM?

Cast-iron housing and tapered roller bearings keep vibration low; surface temperature stabilises near ambient plus the normal gear-mesh rise for a 40:1 worm set.

Which motor frame must I already have to bolt directly to the 42CZ C-face input?

A NEMA 42CZ frame motor with a matching C-face register and bolt circle is required for direct mounting.

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