Sumitomo Heavy Industries RNYMS3-1521YB-EP-15 Gearmotor

Sumitomo Hyponic Gearmotor RNYMS3-1521YB-EP-15 is a right-angle gearmotor that pairs a premium-efficiency three-phase motor with a 15:1 reduction for a compact, high-torque drive in automated systems. The unit is built as a Hyponic gearmotor (right-angle geometry), and the EP variant denotes a premium-efficiency motor within Sumitomo’s lineup.

This model delivers approximately 3 HP at 60 Hz input, with a motor speed around 1,750 RPM and an output speed of 117 RPM, capable of about 1,380 in-lbs of torque at the gearbox output for reliable belt- or chain-driven applications. RNYM3/RNYMS3-1521YB-EP-15 configurations at 60 Hz list 1,750 RPM motor speed, 117 RPM output, and torque in the neighborhood of 1,380 in-lbs.

The shaft diameter is 1-3/8 inches (Q8E), and the part number RNYMS3-1521YB-EP-15 identifies the 1521 family’s Hyponic gearmotor with EP-15 specification from Sumitomo Drive Technologies. The shaft size is indicated as 1-3/8" (Q8E), and the EP-15 designation aligns with the 1521-series Hyponic gearmotors.