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Cast iron worm speed reducer, 56C C-face, 10:1 ratio

Boston Gear

Boston Gear 7713-10-B5-G Speed Reducer 56C 10:1

SKU CH-3ZKQ-2PA4Q

Worm-gear speed reducer with 56C C-face input, 10:1 ratio, 0.75 hp maximum input and 240 in-lb output torque

  • Worm gearing delivers smooth 10:1 speed reduction
  • 56C C-face mount fits standard NEMA motors directly
  • Hardened steel gears handle 240 in-lb output torque
  • Cast-iron housing with tapered roller bearings supports 150 lb overhung load
  • Mounts at any angle for flexible installation

Application fit

The Boston Gear 7713-10-B5-G is a worm-gear speed reducer built for a 56C frame motor and a 10:1 ratio. It suits OEM machinery, conveyors and packaging equipment where a fixed reduction and right-angle output are required. Buyers needing a different ratio, a hollow output bore or a flange-mount housing will not find those options here.

Installation reality

The unit mounts at any angle thanks to its cast-iron housing and C-face input, so alignment with a standard 56C motor is straightforward. Overhung load is limited to 150 lb, so pulleys or sprockets must be kept close to the housing to avoid bearing overload. The 1.33 in worm centre distance and 1.75 in base-to-centre height fix the mounting footprint.

Sustained-load behaviour

Rated at 0.75 hp input with a maximum output torque of 240 in-lb, the reducer delivers 175 RPM output at full load. Hardened and ground steel gears on tapered roller bearings handle continuous duty without the thermal fade seen in short-burst tests. California Proposition 65 warnings apply to chemicals in the product.

How it compares

Measured against everything we stock in Transmission Fluid & Gear Oil, at today’s prices. Recalculated every night.

Price $548.99
Pricier than about 80% of the 118 comparable items (median $40.99).

Specifications

Product
Brand nameBOSTON GEAR

Questions about this item

How do I confirm the unit is running correctly after installation?

Verify the output shaft turns at or below 175 RPM and that torque does not exceed 240 in-lb under load

What comes with the speed reducer and what must I source separately?

The reducer includes the cast-iron housing, hardened worm gear, tapered roller bearings and 56C C-face input; motor, mounting hardware and lubricant are not included

Which gear-ratio version should I select for my application?

Choose the 10:1 ratio when you need a 10-to-1 speed reduction with up to 0.75 hp input and 240 in-lb output torque

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