Mitsubishi MR-J3BRKS1-79-5M Hollow Shaft Spindle Motor for SJ-V Series

The Mitsubishi MR-J3BRKS1-79-5M (MR-J3BRKS1-79-5M) is a high-performance hollow shaft spindle motor engineered for demanding CNC machine tool and industrial machining applications within the Mitsubishi SJ-V series. Featuring high-speed bearings and a built-in type 2 absolute feedback encoder, this unit provides precise speed and position detection during continuous duty operations. It delivers a rated power output of 7.5 kW (7,500 W) with a rated torque of 35 Nm at a nominal rotational speed of 1,500 rpm, operating on a 200 V AC supply voltage class. Built for reliable integration, the motor features a 204 x 204 mm flange size with foot mounting provisions to ensure rigid and vibration-resistant installation on machine frames. It is rated with an IP44 degree of protection against particulate and fluid intrusion in industrial workshop environments. The unit operates reliably within an ambient temperature range of 0 to +40 degrees Celsius. Combining robust torque delivery and accurate motion feedback, this spindle motor is ideally suited for high-speed milling, turning, and precision automated machining systems requiring dependable spindle drive performance.