Product Description:

The BL-MC150E-20SN-A is a motor produced by Okuma within the BL Servo Motors series. It is intended for closed-loop motion axes found in CNC machining centers and automated material-handling stations, where it converts drive current into precisely scaled rotational power. By placing position feedback directly on the shaft, the unit supplies the numerical controller with real-time rotor position data, allowing coordinated interpolation and accurate part geometry across multi-axis processes. Such integration supports consistent surface finish and repeatable cycle times in production environments.

The motor is configured for Control Type E, which matches its current-loop bandwidth to the companion Okuma amplifier. Position information is generated by the ER-FC-2048D sensor; this device provides coarse and fine tracks that the control interprets as an Absolute count for every mechanical revolution. Under continuous duty, the motor sustains 2000 RPM, a speed selected to balance copper losses with application responsiveness. During a locked-rotor test, the stator produces 16.2 N-m of stall torque, offering predictable cutting or clamping force when velocity is momentarily zero. Thermal sizing of the windings assumes a cabinet ambient temperature of 40 °C, so these figures remain consistent across standard shop floors.

The feedback assembly is in an Internal location behind the rear endbell, eliminating external encoder cabling and shielding the sensor from coolant spray. As an AC Servo, the motor can respond to instantaneous torque reversals without inducing magnetization drift. Because the unit ships without a brake, holding position during power loss relies on the drive’s regenerative clamping or an external mechanical lock. The housing weighs 24 lb, a figure used to calculate moving mass, axis momentum, and required counterbalance effort on vertical slides.