Product Description:

The BL-MH101E-12SB is a servo motor built by Okuma and part of the BL Servo Motors series. It converts drive current from an Okuma servo amplifier into controlled rotary motion for axes that require closed-loop positioning in machine tools and other automated equipment. By coupling directly to a load through its shaft, this motor delivers repeatable torque and speed for interpolation, tool handling, and other precision tasks. This operating role helps the control loop maintain accurate motion during repeated starts, stops, and direction changes.

The motor delivers a continuous mechanical power of 1.2 kW at its rated operating point. That output is achieved while the rotor maintains 1200 RPM, a moderate speed that suits the torque demands of heavy positioning axes. To sustain that load, the windings draw 4.95 Arms, and this nominal current helps determine cable sizing and drive settings. When commanded to hold position or accelerate from zero, the electromagnetic system can generate 11.9 N·m of stall torque, providing useful margin to overcome static friction in ball-screw or belt transmissions. A 6-pole magnetic topology shortens the electrical cycle period, which improves low-speed smoothness and servo stiffness during precise axis movement.

The drive’s overcurrent protection must respect a ceiling of 21.0 A so the motor stays within its intended electrical limit. Position feedback is supplied by an E/F-type incremental encoder, ensuring that the controller receives high-resolution speed and position data without additional adapter boards. The motor pairs with a 30D Okuma servo amplifier, so the matching drive platform is already suited to its feedback and commutation requirements. A built-in holding brake locks the shaft when power is removed, which is useful on vertical axes and during stopped conditions. The straight shaft style allows direct coupling to common mechanical interfaces without a taper sleeve.