Mitsubishi MR-J3BRKS1-79-50M Hollow Shaft Spindle Motor for SJ-V Series

The Mitsubishi MR-J3BRKS1-79-50M (MR-J3BRKS1-79-50M) is an AC spindle motor engineered for industrial CNC machinery and high-precision drive systems utilizing Mitsubishi Electric SJ-V series equipment. Designed with a hollow shaft and high-speed bearings, this unit delivers reliable rotational performance in demanding machine tool spindle operations. It features an integrated type 2 absolute feedback encoder to provide precise position and velocity feedback during high-speed cutting, milling, and drilling processes. Operated from a 200 V AC supply class, the motor offers a rated output power of 7.5 kW (7,500 W) with a rated torque of 35 Nm at a base rated speed of 1,500 rpm. The mechanical assembly utilizes a 204 x 204 mm mounting flange for secure integration into compatible machine assemblies. Built for factory environments, it features an IP44 protection rating and operates reliably across an ambient temperature range from 0 to +40 degrees Celsius. This spindle motor provides dependable power delivery and dynamic stability across continuous manufacturing cycles.