The Cyclo® BBB5 combines the strength and flexibility of the Cyclo® gear reducer and a single-stage right-angle spiral-bevel gearbox in a simple right-angle gearbox design. With a 24-month warranty, regardless of hours of operation, the Cyclo® BBB5 is an excellent choice for applications in material handling, packaging, conveyors, and other applications requiring right angle speed reducers.
Cyclo® Bevel Buddybox® 5 Series Gearmotor
Right-Angle Spiral-Bevel Gearmotors with Cyclo® or Planetary Reducer Inputs
Robust, state-of-the-art, spiral-bevel gearmotors, designed for keyed hollow-bore installations.
- All-Steel internal components
- Cost effective for keyed hollow-bore installations
- Highly Efficient
- Integrated Cycloidal Technology
- Maintenance-Free options available
Input | Integral gearmotor, quill and C-face adapter |
Output | Shrink Disc, Keyed Hollow Bore |
Mounting | Hollow Shaft, Flange, U-Face (direct surface mount) |
Sizes | 4 frame sizes (Z-C), 25 to 412kg |
Ratios | 11:1 to 26,492:1 and greater |
Power Ranges | Up to 75Hp (55kW) |
Torque Capacity | 45,492 lb-in (5,140 N·m) |
Motor Standards | NEMA, IEC, JIS, UL, CSA, CE |
Cyclo® BBB5

Key Facts
Features of the Cyclo® BBB5 Series
Compact Housing Design
The Cyclo® BBB5 features a smooth, cast-iron housing design, and is optimized for shaft-mount applications, long life and easy maintenance.
No Thermal Limitations
The Cyclo® BBB5 series runs cooler and lasts longer than typical right-angle shaft gearmotors.
High Efficiency
The Cyclo® BBB5 utilizes high-performance steel spiral-bevel gearing that delivers up to 94% efficiency.
Lightweight Design
The Z Size features a small, light-weight aluminum die-cast housing, making it the ideal upgrade from typical worm-gear drives.
100% Hardened-Steel Internal Components
Provide long life, smooth operation and superior strength.
High-Torque Splined Connection
Ensures more durable and dependable power transmission than typical keyed connections.
Tapered Bearings
Resist axial and radial loads simultaneously.
Cyclo® or Planetary Input
Cyclo® technology provides high overload capacity and exceptional reliability.
Shaft Mount Design
Designed specifically for applications that require shaft-mounted reducers. Save space, reduce cost, and increase safety.

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FAQ
Do you have questions about the Cyclo® BBB5? Below are some of our most commonly asked questions, or you can view our Support area under Knowledge for more frequently asked questions and answers.
Visit our Cyclo® BBB5 Product Configurator to find the exact match for your applications.
The standard ratings for Cyclo® BBB5 are based on 10-hour daily service under conditions of uniform loads (equivalent to AGMA service factor 1.0). By following the product selection process outlined in our catalog, you will determine and apply the Service Factors to compensate for the severe operating conditions. Sumitomo recommend our Cyclo® BBB4 product for extremely severe operating conditions, as it is a more robust right-angle gearbox design.
Cyclo® BBB5 Speed Reducers provide 300% momentary intermittent shock load capacity. For applications with shock loads greater than 300%, consult a Sumitomo Application Engineer.
Emergency After-Hours Support
757-485-3355Sumitomo’s Product Support offers scheduled repair services as a one-stop-shop for all your related gearbox needs. For emergency repairs, we offer repair services 24 hours a day, 7 days a week.

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