BL-50E-20T Okuma
Wake Industrial LLC is not an authorized distributor of this product.
The Okuma BL-50E-20T is a servo motor from the BL Servo Motors series with a continuous output of 1 kW and a rated current of 5.1 Amps. It features a permanent magnet field type, four poles, and operates at a rated speed of 2000 revolutions per minute with a rated voltage of 156 Volts. This three-phase motor has a stall torque of 5.3 Newton-meters and uses a Y winding connection.
Internal Product Review
The BL-50E-20T is an Okuma BL servo motor with 1 kW continuous output and a rated speed of 2000 min⁻¹. Permanent magnet excitation and a 3-phase configuration give the motor smooth response and dependable control characteristics. A 5.3 N·m stall torque makes this model a strong fit for precise servo applications.
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Product Description:
The BL-50E-20T servo motor is produced by Okuma and belongs to the BL Servo Motors series. It is a permanent-magnet, three-phase unit intended for closed-loop axis drives in machine tools and other automated equipment, where precise torque and speed regulation are required for positioning and contouring tasks. By pairing the rotor’s rare-earth magnets with a stator winding designed for sinusoidal commutation, the motor converts inverter output into smooth mechanical rotation. This design supports repeatable motion profiles on linear or rotary stages and allows the connected drive to correct changes in speed or position as the mechanical load varies.
The motor delivers a continuous mechanical output of 1 kW while drawing a rated current of 5.1 A from a three-phase supply. Its electrical system operates at 156 V line to line, matching Okuma drive amplifiers that regulate current according to position feedback. Operation is synchronized to a fundamental electrical frequency of 67 Hz. The rotor has 4 poles, which establish the relationship between electrical frequency and mechanical speed. A three-phase winding reduces torque ripple and supports efficient vector control, while the permanent-magnet field eliminates the need for separate rotor excitation. These electrical characteristics allow the amplifier to regulate phase current smoothly during acceleration, constant-speed travel, and controlled deceleration without interrupting the motor’s closed-loop response.
The motor has a rated speed of 2000 rpm and can produce a stall torque of 5.3 N·m. The available stall torque provides holding capability during low-speed interpolation or temporary axis clamping, while the rated speed supports feed-axis travel and spindle-orientation functions. The stator coils use a Y connection, which distributes the line voltage across the phase windings and helps limit the current required for the stated output. Permanent-magnet excitation supports responsive torque production because rotor flux remains available without a separate excitation circuit. The balanced electromagnetic arrangement also promotes predictable torque response as the controller adjusts current to compensate for changing machine loads. This behavior is useful in applications that require smooth transitions between standstill, low-speed positioning, and continuous rotary motion.
