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
Silver helical speed reducer with C-face 56C input flange, 36:1 ratio, 1.97 in base-to-center height, hardened steel gears

Boston Gear

Boston Gear F842B-36K-B5-M1 Speed Reducer 36:1

SKU CH-VAMB-WNXAD

A C-face helical speed reducer delivering a 36:1 ratio, 48 RPM maximum output speed and 1,254 in-lb torque for 56C frame motors

  • 36:1 gear ratio delivers precise speed reduction
  • 48 RPM maximum output speed for controlled motion
  • 1254 in-lb output torque handles demanding loads
  • 770 lb overhung load capacity supports radial forces
  • 97 in base-to-center height fits standard 56C frames

Right-angle speed reducer for 56C-frame motors

The Boston Gear F842B-36K-B5-M1 is a helical speed reducer with a 36:1 ratio and C-face input for 56C-frame motors. It delivers a maximum output speed of 48 RPM and up to 1254 in-lb of output torque at 1 hp input power. Mounting orientation can be any angle.

Fixed 36:1 reduction ratio

The single ratio determines output speed and torque multiplication for the driven load. At a maximum input of 1750 RPM the output is 48 RPM, so the unit suits applications needing that specific reduction. A different ratio would change both speed and torque figures.

Hardened steel gears and roller bearings

Hardened and ground steel gearing with roller bearings supports the 770 lb overhung load capacity. The construction handles the rated torque in either clockwise or counter-clockwise rotation. California Proposition 65 warnings apply for cancer and reproductive harm.

Highlights

  • 36:1 gear ratio delivers precise speed reduction
  • 48 RPM maximum output speed for controlled motion
  • 1254 in-lb output torque handles demanding loads
  • 770 lb overhung load capacity supports radial forces
  • 97 in base-to-center height fits standard 56C frames

Specifications

BrandBOSTON GEAR

Questions about this item

What does the 36:1 ratio mean for output speed when the input runs at 1,750 RPM?

The reducer divides input speed by 36, so at 1,750 RPM the output turns at roughly 48 RPM.

How does the C-Face 56C input connection limit the motor size I can use?

It accepts NEMA 56C frame motors up to 1 hp; larger frames or higher power will not bolt on.

What shaft height and bolt pattern does the 1.97 in base-to-center dimension give me?

The output centreline sits 1.97 in above the mounting surface, matching the standard 56C footprint for direct replacement.

Also in this aisle

People compared these

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