SEW-EURODRIVE GEAR MOTOR WA23 MOD R87 DSR112M8/2BE5HR 865 TO 8 /3350 TO 32 RPM

SEW-EURODRIVE GEAR MOTOR

WA23

MODEL R87 DSR112M8/2BE5HR

865 TO 8 /3350 TO 32 RPM

11/4 HP TP 4 HP

TORQUE MAX 13,000 IN LBS

SEW-EURODRIVE R87 DSR112M8/2BE5HR uses a two-speed, pole-changing motor with split horsepower ratings tailored to each speed stage.

Instead of a flat 4 HP across the board, this pole-changing layout delivers 1.1 HP at low speed and jumps up to 4 HP at high speed. It draws from a standard 460V, 3-phase system to manage two distinct operational profiles:

• Low-Speed Stage (8-Pole Winding): Delivers 1.1 HP with an input speed of 865 RPM reduced down to a slow, high-torque 8 RPM output.
• High-Speed Stage (2-Pole Winding): Delivers 4 HP with an input speed of 3350 RPM reduced down to a 32 RPM output.
• Updated Specifications BreakdownGearbox Type: Inline Coaxial Helical (R series, frame size 87)
• Mechanical Reduction Ratio: ~108:1
• Dual Power Output: 1.1 HP (Low Speed) / 4 HP (High Speed)
• Dual Speed Output: 8 RPM (Low Speed) / 32 RPM (High Speed)
• Brake Assembly: BE5 (5 Nm capacity electromagnetic brake) with HR manual hand lever release.
• Motor Type: DSR112M8/2 (Multi-speed pole-changing frame)

Because the horsepower drops significantly to 1.1 HP when switched to the 8 RPM low-speed winding, the motor is protected from drawing excessive current or overheating under heavy starting loads at low speeds.

The SEW-EURODRIVE Gear Motor WA23, model R87 DSR112M8/2BE5HR, is engineered for versatility with a two-speed, pole-changing motor. This feature offers tailored power across two operational profiles: the low-speed stage delivers 1.1 HP at an input of 865 RPM, reducing output to 8 RPM, while the high-speed stage steps up to 4 HP at 3350 RPM, with an output of 32 RPM. The motor uses a standard 460V, three-phase power supply, with a mechanical reduction ratio of approximately 108:1. The unit is equipped with an inline coaxial helical gear system, framed in size 87 of SEW's R series. It incorporates a BE5 electromagnetic brake with a capacity of 5 Nm, plus an HR manual hand lever release for added control. Enclosed in a TEFC (Totally Enclosed Fan Cooled) housing, the gear motor is designed for durability and reliability in various industrial applications. Made in Mexico, this gear motor efficiently manages its power to prevent overheating or excessive current draw, especially under heavy loads at lower speeds. This dual-speed capability, combined with robust construction, makes the SEW-EURODRIVE gear motor an ideal choice for demanding operations requiring precise control and efficiency.