Goulds Servo Motor M231-Y50B-300Y-PS - Variable 3000 RPM

The Gould M231-Y50B-300Y-PS is a permanent magnet DC servo motor manufactured by Gould Inc. Motion Control Division (Gettys), Racine, Wisconsin. This motor is part of the Gettys M231 series, commonly used in CNC machine tool retrofits, automation systems, and precision motion control applications. Serial number 71245R is stamped on the nameplate.

Nameplate specifications include a Back EMF (Ke) of 37.8 V/KRPM, torque constant (Kt) of 3.20 LB IN/AMP, rated current at stall of 33 amps, and an integrated tachometer with an output of 3 V/KRPM. The connector diagram reference is 201 133 3049, and the outline drawing reference is 201 233 1247. The M231 series is a non sealed configuration within the Gettys M2 family, rated for a continuous torque of 105 LB IN and a maximum speed of 3000 RPM per manufacturer published specifications.

Construction features a black painted cylindrical steel housing with cooling fins, a keyed cylindrical output shaft, and an integrated junction box on the side housing two MS style military spec circular connectors for power and feedback connections. The motor incorporates a brake interface per the BRAKE: HZ field on the nameplate.

The Gettys M231 series has been sold under multiple brand names over its production history, including Gettys, Gould, Modicon, AEG, and Allen Bradley. Cross reference part numbers and replacement options are available through legacy Gettys service channels for CNC retrofit and obsolete motor replacement applications.

Stock # 0226-123