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

Helical Buddybox - HBB

Helical gearboxes and gearmotors with Cyclo Drive reducer input. Features keyless, Steel Taper-Grip bushing for easy installation.

Not available in your region
Ask us about availability

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

  • Integrated Cyclo Drive technology
  • Keyless Taper-Grip Bushing or Keyed Hollow Bore


Input Integral Gearmotor, free Input Shaft or Motor Adaptor
Output Taper-Grip Bushing, Keyed Hollow Bore
Ratios 21:1 up to 2 559:1 and greater
Torque Up to 8 565 Nm
Power Range 0.12 to 30 kW
Mounting Hollow Shaft, Flange, Clamp
Options Integral Motor, Motor Adaptors
Motor Standards Global Standards


Helical Buddybox - HBB

Sumitomo’s Helical Buddybox - HBB speed reducers and gearmotors provide innovative shaft-mounted drive solutions for demanding applications. The HBB combines the quiet, efficient and reliable performance of the Cyclo Drive 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

93 %
100 mm
Max Bore Size
30 kW
Max Rating

Modular Design

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

Cyclo Drive 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.

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.

Clear All


Document Type
CAD Background Image for Download section

CAD / Configure

Select your level of product detail:


Learn more about our CONFIGURATOR TOOL:

Cyclo and Spur Gear

Looking for a different product?

Click on our Product Selector to quickly find the right product from our entire lineup.

Our intuitive filters help you find the product that best suits your application.