HBB renders with iE3 motors
HBB renders with iE3 motors
HBB renders with iE3 motors
HBB renders with iE3 motors

Helical Buddybox®

Helical gearbox with Cyclo reducer input. Features keyless, Steel Taper-Grip® bushing for easy installation.

Offset parallel, helical gearbox in a rugged integral, shaft-mounted design.

  • Integrated Cyclo® technology
  • Keyless Taper-Grip® Bushing or Keyed Hollow Bore
  • Ideal for Screw-Conveyor applications


Input Integral Gearmotor, X-Adapter 
Output Taper-Grip® Bushing, Keyed Hollow Bore, Screw Conveyor
Ratios 11:1 up to 4,365:1
Torque Up to 8,256 Nm
Power Range 0.1 to 30 kW
Mounting Hollow Shaft, Flange
Options Integral Motor
Motor Standards CE, IEC, JIS, UL, CSA, NEMA


Cyclo® HBB

Sumitomo’s Helical Buddybox® (Cyclo® HBB) speed reducers and gearmotors provide innovative shaft-mounted drive solutions for demanding applications. The Cyclo® HBB combines the quiet, efficient and reliable performance of the Cyclo® input with the rugged helical-gear output. The modular design provides a compact, efficient product and the most flexible range of output speed and torque combinations available.

Key Facts

Max Bore Size
Max Rating

Modular Design

Interchangeable cast-iron housings in flange, face or shaft-mount configurations.

Cyclo® Technology

Quiet, efficient and reliable operation with high-torque density and compact size.

Taper-Grip® Bushing

Provides quick, easy mounting and removal of the unit without the need for a custom shaft.

No Thermal Limitations

Highly-efficient design never needs an external fan.

Rugged Monoblock Housing

Monoblock-housing design eliminates the possibility of leaks at housing split.

CEMA Screw Conveyor

CEMA standard shafts and compact design eliminates belts, sheaves and guards, saving space and reducing maintenance.

Double-Output Seals

Prevent lubricant leaks and protect from contamination.

Mounting Versatility

Flange, Face, and Shaft Mounting options allow for universal mounting.

Long Life Bearings

Oversized, heavy-duty bearings for maximum strength and service life.

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