Product Description:

The BL-MC150E-20S is an AC servo motor built by Okuma and assigned to the BL Servo Motors series. It functions as a drive-side actuator that converts three-phase electrical energy into controlled mechanical rotation for positioning tables, tool changers, or feed axes in automated production cells. Integrated feedback devices, which are not detailed here, allow the motor to exchange real-time speed and position data with the accompanying amplifier so that closed-loop regulation can be maintained during rapid starts, directional reversals, and steady-state cutting passes.

The winding set draws a continuous phase current of 3.4 A, establishing the thermal loading that the amplifier and enclosure must dissipate. Line potential is specified at 133 V, so insulation, cable selection, and protective devices must conform to this voltage class. Mechanical output reaches 3 kW; this power rating indicates how much work can be transferred to a leadscrew or belt without exceeding copper and iron loss limits. Nominal shaft velocity is 2000 rpm, a speed that balances surface-finish requirements with cycle-time goals in machining centers. At that operating point, the motor can exert 16.2 N·m of continuous torque, giving the axis enough pulling force to accelerate linear tables or overcome cutting resistance while staying within the published current envelope.

The electromagnetic system operates at a fundamental frequency of 133 Hz, and the stator is wound for three-phase excitation, so proper phase rotation is essential to avoid counter-torque and vibration. Within integrated CNC racks, matching amplifiers use parameters aligned with the motor's impedance and dynamic constants to support stable operation. Common geometry across the BL Servo Motors family also simplifies mounting interchange, because flange dimensions and shaft datums remain consistent from one model to the next.