Surface Mining

Helical Shaft Mount (HSM)

Helical shaft mounted speed reducer available with CEMA screw conveyor drive option and C-face adapter option. Features patented keyless, steel Taper-Grip® bushing for easy mounting.


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  • 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 specialized applications and extended operation
  • Drop in replacement for all AGMA-style units
  • Flexible motor mounting capabilities
  • Backstops with centrifugal lift-off sprags to maximize reliability




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