Product Description:

The BL-MC140J-30T is an AC servo motor produced by Okuma within the BL Servo Motors series. It is intended for axis control in machine-tool and general automation equipment where closed-loop positioning and velocity regulation are required. By converting drive current into precise mechanical rotation, the motor forms the electromechanical link between the digital controller and the driven load.

This model operates from a supply rated for three-phase power and can be driven at a fundamental electrical frequency of 200 Hz. Under nominal conditions, the rotor reaches 3000 rpm, and an internal incremental encoder returns real-time shaft position to the drive for accurate motion feedback. The windings are designed for a line potential of 133 V, allowing direct connection to compatible Okuma inverters without a step-down transformer. When motion is locked, the magnetic circuit delivers a stall torque of 13.7 N-m, which indicates the torque available at zero speed. These electrical and feedback characteristics support controlled contouring, tapping, and rapid-feed axis motion in automated equipment.

A mass of 35 lb affects inertia matching with ball-screw or belt-driven transmissions, especially where acceleration and deceleration rates must remain stable across repeated cycles. Construction conforms to IEC34, which aligns the motor with established rotating machinery requirements for insulation, vibration, and general operating performance. Drive compatibility includes the MIV05-1 unit for 300 percent overload duty and the MIV08DB-1 unit for 500 percent peak demand, giving two inverter options for different load profiles. This combination of weight, compliance, and compatible drive pairings helps the motor fit a range of machine-axis applications without changing the core electrical characteristics described above.