SEW-EURODRIVE WA20-DRN71MS4-ASE1-EK8R-AL Gearmotor

SEW-EURODRIVE WA20 DRN71MS4 ASE1 EK8R AL is a WA20-series right-angle SPIROPLAN gearmotor that pairs a DRN71MS4 motor with a 32.50:1 gearhead and a 20 mm hollow output shaft. At 60 Hz, the motor delivers 0.25 kW (0.33 hp) with a rated current of 1.29 A (230 V) or 0.64 A (460 V) from a 230/460 V double-star configuration, and the gearset provides a total ratio of 32.5:1, yielding an output torque of 31 Nm and an approximate output speed of 53 rpm (motor speed 1720 rpm at 60 Hz). The unit carries IP54 protection and a 54 enclosure rating, with M1A mounting geometry for compact installations. EK8R denotes a mounted TTL RS-422 encoder for feedback, while AL indicates an aluminum fan option. The assembly adheres to IE3 efficiency, with a motor service factor of 1.15 and a gear service factor of 1.30, and it is EISA-compliant but does not bear a CE mark. The terminal box is aluminum and located on the lower part of the housing, featuring 2xNPT 1/2" cable entries and a 270° cable-entry orientation for wiring flexibility. Lubrication is specified as SEW PG 460 synthetic oil (0.24 L) with a total gearbox lubricant volume of about 0.065 US gal. This configuration is designed for precise, space-constrained applications requiring integrated encoder feedback and a robust hollow-shaft drive.