BL-H100E-12S Okuma
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The Okuma BL-H100E-12S servo motor is part of the BL Servo Motors series and features a continuous torque of 98 kg-cm with a stall torque of 108 kg-cm. It delivers rated power of 1.2 kW at 1200 rpm and runs on 155 V with a rated current of 5.0 A. The motor has a duty rating of continuous operation and a pole count of 6.
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Product Description:
The BL-H100E-12S is an AC servo motor manufactured by Okuma within the BL Servo Motors series. Designed for CNC machines, pick-and-place axes, and other motion-control applications, the motor converts commanded current into precise shaft rotation. Its permanent-magnet design supports closed-loop position and velocity control when the motor is connected to a compatible drive and feedback system. This arrangement allows mechanical axes to follow programmed motion profiles while maintaining repeatable accuracy during extended production shifts.
Under continuous load, the motor supplies a shaft torque of 98 kg-cm when adequate cooling airflow is available. The motor is rated for continuous duty, allowing it to operate at its rated load for extended periods while remaining within its thermal limits. Its rotor has 6 magnetic poles, which determine the electrical angle used by the drive for proper commutation. The rated mechanical power is 1.2 kW, providing useful output for ball screws, gearboxes, timing belts, and similar transmission components. At its rated operating point, the motor reaches a speed of 1200 rpm, balancing rotational velocity with the available shaft torque. Proper drive selection and motor cooling are necessary to maintain this operating performance without excessive winding temperature.
The motor draws a nominal current of 5.0 A, so the connected servo amplifier must provide sufficient continuous current and additional capacity for acceleration peaks. Its winding voltage is rated at 155 V, making the motor suitable for a compatible mid-voltage servo drive. The motor can produce a stall torque of up to 108 kg-cm during brief locked-rotor conditions, although prolonged operation at stall can cause excessive heating. This higher torque supports rapid acceleration, controlled deceleration, and temporary static holding when the motor operates within the permitted thermal range. Correct drive parameters help preserve positional accuracy by matching the current limits and commutation behavior to the motor. The mechanical load should also remain within the permitted radial and axial force limits for the shaft and bearings.
