R-Series : MobilePower™ Transmissions
Right-Angle Gearbox



Smooth. Precision.
The R-Series right-angle motor gearboxes are designed for low-voltage, high-torque applications typically found in battery operated vehicles. Combine a precision two-stage gearbox with an ElectroCraft BLDC motor to transfer power smoothly and quietly to your drive wheels. The gearbox features all metallic gearing hobbed to a precision AGMA 9 class to provide durable, quiet performance.

R-Series Mechanical / Winding Data

Model Number Ratio Max No Load Speed Cont Torque (lb-in) Cont Speed (rpm) Peak Torque (lb-in) Backlash (degrees) Max OHL Length (inches)
R702 - A15 15.46:1 3500.0 80.0 210.0 400.0 1.0 250.0 11.2
R685 - A19 19.03:1 3500.0 80.0 160.0 440.0 1.0 250.0 11.7
R685 - A21 21.00:1 3500.0 80.0 145.0 495.0 1.0 250.0 11.7
R683 - A28 28.63:1 3500.0 80.0 120.0 550.0 1.0 250.0 10.5

R-Series Outline Drawing

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