Product Description:

The BL-MS45E-30TN-A brushless servo motor is manufactured by Okuma and belongs to the BL Servo Motors series. It is used with BL-D servo drive amplifiers to provide closed-loop motion for feed axes and peripheral mechanisms in CNC machine tools. By combining commanded motion with absolute rotor feedback, the motor supports repeatable angular positioning for contouring, tapping, and pick-and-place tasks in automated production cells. This arrangement helps the control system maintain accurate axis response during both steady travel and rapid direction changes.

During continuous operation, the unit supplies a shaft power of 1.4 kW, so actuators connected through timing belts or direct couplings can be sized for that mechanical output. It has a base speed of 3000 rpm, which is the operating speed at which nominal voltage and current produce rated torque without field weakening. The winding set is designed for a supply of 143 V from the matched inverter, and it draws 5.9 Arms at that rating; this current level helps limit cable heating during continuous duty. Continuous stall operation is supported by a shaft torque of 4.9 N·m, giving the axis enough margin to resist static loads and accelerate moderate inertia without exceeding thermal limits.

The drive interface follows the BL-D topology, allowing direct compatibility with the matching amplifier platform. Rotor construction uses 6 poles, which supports smooth commutation and stable torque production across the normal speed range. Position data are delivered by the ER-FC-2048D absolute encoder, allowing the controller to recover rotor angle after power cycles without a homing routine. The motor has an installation weight of 19.00 kg, so the supporting casting or slide must be able to carry that load while preserving the intended dynamic behavior of the axis.