Product Description:

The BL-MC100MJ-30SBA is a brushless servo motor manufactured by Okuma for the BL Servo Motors series. It is intended to provide commanded torque and velocity to axes that require precise, repeatable motion in CNC machining centers, pick-and-place units, and other automated assemblies. Using a permanent-magnet rotor and three-phase stator windings, the unit translates electrical control signals from a matched drive into mechanical rotation, supplying continuous closed-loop positioning capability for industrial automation tasks.

Under continuous duty, the motor draws 14.7 A and can deliver up to 3.0 kW of shaft power when the stator is excited at its rated frequency of 200 Hz. A synchronous speed of 3000 rpm allows fast traverse moves, while a stall torque of 10.8 N·m permits the motor to hold loads without losing position during low-speed interpolation. Thermal exchange is handled by a totally enclosed frame that keeps cutting fluid and airborne contaminants away from the windings. Because rare-earth magnets supply the magnetic field, the motor maintains torque density without the heat associated with separately excited fields. The 35 mm output shaft transmits power directly to couplings or gearboxes.

Electrical integration centers on a rated line voltage of 133 V supplied through a three-phase feed. The motor uses an eight-pole rotor geometry, producing a full electrical cycle with every 45 degrees of mechanical rotation and supporting smooth operation at low speeds. Compliance with IEC 34-1 establishes requirements for dimensional tolerances, insulation, and testing. An internal resolver tracks the rotor position, enabling the controller to energize each phase at the correct instant. This feedback supports efficient torque production during rapid reversals and allows the drive to maintain accurate commutation throughout the motor’s operating range.