BL-MC100E-20SB by Okuma

The BL-MC100E-20SB is a brushless rotary drive element manufactured by Okuma and assigned to the BL Servo Motors series. Within an automation cell, this model couples with a matched drive amplifier to deliver commanded position, velocity, or torque to machine axes that demand tight feedback control. By converting electrical energy to mechanical rotation with minimal cogging, the unit supports repetitive duty cycles typical of pallet loaders, gantry positioning tables, and other industrial motion subsystems.

Its stator is wired for a three-phase supply, a configuration that smooths torque production and keeps current per conductor low. An internal rotor built around rare-earth magnets has a pole count of 8, allowing fine electrical resolution per mechanical revolution. Under nominal conditions, the shaft turns at 2000 rpm, matching drive commands derived from the rated electrical frequency and pole layout. Continuous mechanical output is 2 kW, so the motor can sustain moderate loads without reaching thermal limits. The winding set expects a bus potential of 133 V, enabling direct connection to Okuma drive modules that share this DC link level.

Frequency and current ratings determine how the controller must energize the coils. The fundamental electrical frequency is 133 Hz, which corresponds to the rated speed when paired with the eight-pole construction. To maintain that frequency under load, the amplifier should be able to deliver a continuous phase current of 8.91 A. When the shaft is locked, the motor resists motion with a stall torque of 10.8 N·m, a characteristic used for sizing gear trains or external holding brakes. The control designation E indicates parameter sets within Okuma servo software that match the motor's impedance and thermal profile.