Product Description:

The BL-MH101E-12S is a brushless servo motor manufactured by Okuma and positioned within the BL Servo Motors series. Engineered for closed-loop motion control, the unit receives sinusoidal current from a matching drive and produces controlled shaft rotation for CNC equipment and automated assembly lines. Its role in industrial automation is to translate programmed commands into repeatable linear or rotary movement across machine axes. By integrating rotor feedback, the motor allows the controller to adjust torque in real time, maintaining positional accuracy when load inertia, cutting forces, or fixture weights vary. This makes the motor suitable for contouring moves, point-to-point positioning, and repeated cycle changes where response must remain predictable.

Under continuous duty, the motor supplies 1.2 kW of mechanical power at the rated shaft speed of 1200 rpm. To sustain that output, it develops 98 kg-cm of torque while the stator is energized with a line voltage of 155 V delivered by the matching amplifier. Phase windings draw 5.0 A during steady operation, a current level that keeps copper losses within the thermal design margin. The rotor employs a 6-pole arrangement, which helps the motor deliver smooth low-speed motion without demanding excessive inverter switching activity. These electrical and mechanical values support stable velocity loops in medium-torque machining centers and other equipment that depends on repeatable axis response.

When the axis is held motionless or commanded to accelerate abruptly, the motor can reach a stall torque of 108 kg-cm, supplying additional holding capacity for static cuts or vertical loads. During such peaks, the current regulator may rise to an instantaneous ceiling of 21 A, yet the paired drive unit offers a continuous capacity of 30 A, preserving thermal headroom under transient stress. This short-term overhead helps the motor absorb abrupt load changes and recover quickly from acceleration demands without upsetting motion stability. These upper-limit figures extend the nominal ratings and mark the dynamic boundaries for jerk optimization, acceleration ramp selection, and protective fuse sizing in the drive system.