Product Description:

The BL-MH301E-12S is a three-phase servo motor manufactured by Okuma for the BL Servo Motors series. Within industrial automation, it supplies closed-loop rotary motion so machine axes can follow programmed profiles precisely and repeatedly on CNC tools, transfer lines, and other positioning equipment. Its permanent-magnet field produces high torque density, while the six-pole rotor supports smooth low-speed control and helps the drive system maintain accuracy under varying mechanical loads.

This motor operates at a rated voltage of 163 V and draws a nominal current of 15.4 A. These values show the steady electrical demand placed on the matching amplifier during normal operation. Under those conditions, it delivers 3.6 kW of mechanical output at a shaft speed of 1200 rpm. The continuous torque rating is 36.3 N-m, which supports most cutting and feed duties without stalling. Permanent-magnet excitation eliminates field-winding losses, and the Y winding connection balances phase voltages across the three-phase stator. The motor follows IEC 341 dimensions and thermal limits used for the same frame designation, and its six poles help balance torque smoothness with base speed.

The control electronics are protected by a current limit of 62.5 A, and the associated drive unit is sized for a peak capacity of 75 A so transient accelerations do not trip protective logic. Position feedback comes from the ER-FC-2048D encoder, which provides digital resolution suited to modern CNC interpolation rates. System timing synchronizes to a supply frequency of 60 Hz, and the stator is wound for three symmetrical phases to minimize vibration and neutral currents. The combination of encoder feedback, current limiting, and balanced phase construction supports stable servo response during acceleration and steady running.