Mitsubishi MR-J3BRKS1-79-30M Hollow Shaft Spindle Motor for SJ-V Series

The Mitsubishi MR-J3BRKS1-79-30M (MR-J3BRKS1-79-30M) is a hollow shaft spindle motor designed for high-performance industrial machining and CNC spindle applications within the Mitsubishi SJ-V series. Equipped with an integrated type 2 absolute feedback encoder and high-speed bearings, this AC motor provides precise angular positioning and reliable velocity feedback for demanding production environments. It operates on a 200 V AC supply voltage class and delivers a rated output of 22 kW, accompanied by a rated torque of 118 Nm at a rated rotational speed of 1,500 rpm. Built for dependable operation in rigorous manufacturing setups, the motor features a 250 x 250 mm flange mounting design to facilitate rigid mechanical installation. The robust enclosure offers an IP44 protection rating against solid particles and splashing water, ensuring durable operation in industrial environments rated for an ambient temperature range from 0 to +40 degrees Celsius. With its combination of hollow shaft architecture, high thermal capacity, and absolute feedback integration, this unit delivers consistent cutting performance, spindle synchronization, and dynamic response for modern automated machine tool systems.