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Load Ratings

Load Ratings

Ratings are based on testing conducted by REV Robotics on the UltraPlanetary system. During testing, the output gear of the cartridge fails at 40 N-m. All load ratings are based on a safety factor of 1.2 to accommodate manufacturing tolerances.
Shock loads can cause the gearbox to fail in situations where the steady-state torque is still within allowable limits.
Cantilevered load on the output shaft puts additional stress on the gearbox and will reduce the torque the gearbox can withstand.
Load rating tables use a red rating system. If the motor and gear ratio combination is highlight in red the torque created by the motor can damage the gearbox. Non-highlighted combinations are within acceptable torque ranges.
The main header for the individual tables has the motor type. Nominal gear ratios are used to reference the cartridge for ease of use in the following charts. For actual gear ratios for an individual cartridge please reference the Actual Cartridge Gear Ratios Table. The final actual gear ratios are indicated in the cells.
When building your gearbox make sure the highest gear reduction is closest to the motor.
HD Hex Motor – REV-41-1291
NEO 550 - REV-21-1651

Load Rating for Two Stage Gearboxes

Load Rating for Three Stage Gearboxes

Load Rating for Four Stage Gearboxes

Load Rating for Two Stage Gearboxes

Load Rating for Three Stage Gearboxes

Load Rating for Four Stage Gearboxes

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