Product Description:

Okuma’s BL-MH201E-12S is an AC servo motor in the BL Servo Motors series that provides precise, closed-loop actuation for feed axes and spindles in CNC machinery. Installed directly on the machine frame, it receives command currents from a matched Okuma amplifier and turns them into controlled rotational motion. The integrated position feedback allows the control system to synchronize acceleration, velocity, and stopping accuracy, making the unit suitable for tool positioning, pallet exchange, and auxiliary handling duties where repeatable rotary performance is essential. This arrangement supports accurate axis response during rapid starts, reversals, and dwell periods.

The motor is safeguarded by a current ceiling of 41.6 A, protecting the stator against excessive thermal rise during transient loads. Position data comes from the ER-FC-2048D incremental encoder, which supplies 2,048 pulses per revolution so the CNC can interpolate fine movement increments. Its electromagnetic circuit is tuned to a supply frequency of 60 Hz, and a rotor built with 6 poles sets the electrical angle used by the drive to commutate phase currents. For continuous duty, the windings draw a rated phase current of 9.80 Arms, which helps match the motor to a compatible amplifier and cable set.

Sustained power delivery reaches 2.4 kW when the shaft turns at the rated speed of 1200 rpm. At that operating point, the machine receives a continuous torque of 23.1 Nm, which helps maintain steady cutting or feed force during long operating cycles. This combination is useful on axes that must hold a steady programmed speed without sacrificing the torque needed for controlled movement through changing process loads. The motor interfaces with a 50D drive unit, and its 163 V winding voltage aligns with the DC link level produced by that amplifier.