SEW-EURODRIVE R37DRS71M4 Gearbox Inverter Motor

The SEW-EURODRIVE R37DRS71M4 is a cylindrical gearmotor in SEW’s R-Series that pairs a 4-pole DRS inverter motor with a high‑stiffness, multi‑stage gear reducer in the R37 size for compact, inverter‑duty performance. The R37 housing is a high‑strength cast‑iron enclosure designed for rugged monobloc construction, with an interlocking two‑piece seal (bi‑helix inner seal and double‑lip outer seal) that guards against contaminants, and center‑tapped output shafts available in metric or inch formats. This drive is designed for inverter duty and supports global 50 Hz or 60 Hz operation, with IE3 premium variants available and standard motor connections for easy wiring. Mounting options include B5 or B14 flanges with centering tenons, foot mounting, and extended bearing variants for special applications. The R‑Series family supports power ratings from 0.05 to 433 HP, ratios from 1.3 to 23,401, and output torques up to 159,300 in‑lb, with the R37DRS71M4 occupying a compact, high‑torque segment of that range. For use cases requiring a compact, rigid drive with integrated inverter functionality, this model offers inverter‑duty performance in a single, ready‑to‑mount package.