Product Description:

The BL-MP400J-25SNB is a servo motor produced by Okuma within the BL Servo Motors series. It serves as the rotary actuator on CNC tool turrets, pick-and-place arms, and other automated axes, translating drive current into precise torque and position. Integrated feedback from an absolute encoder lets the control system maintain accurate path following, helping motion remain repeatable during indexing, contouring, and rapid position changes.

At rated load, the motor supplies 6.2 kW of mechanical power, which indicates its continuous-duty output. The sensing system records up to 7,200 rev of absolute position, and its 24 bit/rev resolution divides each turn into more than 16 million counts for fine motion interpolation. Positional deviation remains within ≤40 arcsec, helping reduce accumulated error during long travel moves and repeated positioning cycles. Data are transmitted over the Okuma Encoder Link bus through a 1 W encoder that accepts a DC 12 V ±30% supply by way of two signal lines plus shield. A 40-bit binary word length supports the multiturn range, and the straight output shaft simplifies coupler alignment in compact machine layouts. The motor can operate across a temperature span of -20 to +105 °C, which supports use near spindles and coolant-exposed machine areas.

Additional limits support stable service in demanding workshop conditions. Encoder tracking is maintained up to 6,000 min⁻¹, so rapid traverse does not compromise feedback integrity. The housing tolerates ambient moisture up to 95% RH without condensation, which suits enclosed machine spaces where humidity can rise during washdown or heavy coolant use. Mechanical durability is verified for shocks of 100 G and continuous vibration of 20 G, helping the motor withstand tooling impacts, pallet transfers, and frequent axis reversals. These operating limits support reliable feedback and stable motion on machines that run with fast acceleration and repeated stop-start cycles.