Product Description:

The BL-ME300J-12SB belongs to the BL Servo Motors series produced by Okuma. This servo motor is intended for axis control in machine tool and automation cells, converting electrical inputs into proportional rotary motion used by drives, slides, and spindles. When paired with a compatible Okuma amplifier, the unit supports closed-loop positioning and stable velocity regulation during repeated starts, stops, and direction changes. Its role in the motion system is to provide accurate rotary output that can be translated into controlled linear or spindle movement.

Electrically, the motor operates from a nominal DC bus of 140 V supplied through a three-wire, three-phase connection. Under rated load, it draws 16.2 A, which indicates the current required during normal continuous operation. Its electrical operation is based on 80 Hz, a value that affects motor response and loss behavior during sustained use. The permanent-magnet rotor uses an 8-pole topology, which supports high torque density while helping keep torque ripple low. These electrical values describe the operating conditions the matching servo amplifier must provide for consistent axis performance.

On the mechanical side, the motor produces a continuous torque of 31 N-m with a corresponding base speed of 1200 rpm, allowing steady output across common feed-motion ranges. Torque is transmitted through a 1-3/8 in output shaft, which supports standard keyed couplings without added machining at installation. Rotor position feedback comes from an ER-JG-7200D encoder, delivering 7200 pulses per revolution for fine position resolution during interpolation. This feedback helps the control loop correct small motion errors quickly, which supports smooth acceleration and accurate tracking during coordinated axis movement.