Sumitomo - HSM - Helical Shaft Mounted Gearbox

Helical Shaft Mounted Speed Reducer with Featuring Keyless TaperGrip® Bushing and CEMA Screw Conveyor Drive Option


 Ratios  5:1, 13:1, 20:1, 25:1
 Power:  0.18 kW to 225 kW
 Sizes:  103 to 608
 Bore Sizes:  30 to 190 mm, Imperial optional
 Mounts:  Vertical, Horizontal, and Direct drive mounting configurations
 Motor Standards:  NEMA, IEC, JIS, UL, CSA, CE
 Lubrication:  Oil lubrication, synthetic lubricant optional
 Cast iron case construction
 Screw Conveyor:  CEMA Standards

Product Description

The Sumitomo Helical Shaft Mount (HSM) Speed Reducer provides a convenient installation and removal method for speed reduction by mounting directly on the drive shaft. Sumitomo's Taper-Grip® bushing design provides simple keyless mounting and easy removal. HSM is readily adaptable for CEMA screw conveyer and shaft mount options. The HSM features carburised gear teeth with optimal gear geometry and wide gear faces, allowing maximum loading and highest efficiency torque output, for higher rating capacity in the most compact design.

Features & Benefits

  • Higher ratings with a 25° pressure angle and wider gear tooth face for maximum torque
  • Keyless shaft connection with Taper-Grip® bushing for easy installation and removal, simple replacement
  • Heavy duty roller bearings for maximum strength and extended life
  • AGMA standard bore sizes in both bushed and through-bore simplify specification and retrofit
  • CEMA standard screw conveyor options
  • Optional Taconite sealing systems for effective protection in specialised applications and extended operation
  • Drop in replacement for all AGMA-style units
  • Flexible motor mounting capabilities
  • Backstops with centrifugal lift-off sprags to maximise reliability


Perfect for screw conveyers, belt conveyers, bulk handling machinery and process equipment for:

  • Baggage Handling
  • Pulp, Paper, & Forestry
  • Aggregate & Mining
  • Mixers & Process Equipment
  • Grain & Agriculture


 HSM - Helical Shaft Mounted Gearbox

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Sumitomo - HSM Helical Shaft Mount