LSM75-21-602-M-0KA Kollmorgen
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MPN: M.1302.1264
The Kollmorgen LSM75-21-602-M-0KA is a brushless servo motor in the LSM Brushless Servo Motors series with a continuous torque of 2.36 Nm and a face size of 75 mm. It features a multi-turn absolute feedback type and can reach a maximum speed of 6000 RPM. The motor offers 8.8 Nm peak torque, operates at a peak current of 21.6 A, and has a winding voltage of 230 V.
Internal Product Review
The LSM75-21-602-M-0KA is a Kollmorgen brushless servo motor with multi-turn absolute feedback and an 8-pole design. Continuous torque of 2.36 Nm and peak torque of 8.8 Nm give this motor a strong operating range for dynamic axis control. A max speed of 6000 RPM makes the LSM75-21-602-M-0KA an excellent choice for responsive servo applications.
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Product Description:
The LSM75-21-602-M-0KA is a brushless servo motor produced by Kollmorgen within the LSM Brushless Servo Motors series. The unit has a 75 mm frame suitable for compact machine installations. It delivers closed-loop rotary motion for positioning tables, pick-and-place axes, and other industrial automation tasks that demand precise torque regulation. The permanent-magnet design works with a compatible servo drive to provide controlled acceleration, speed, and positioning throughout repetitive operating cycles.
Under rated conditions, the motor sustains 2.36 Nm of continuous shaft torque, enabling stable operation against constant process loads. Its stacked magnetic circuit supports rapid acceleration, and the motor reaches a maximum speed of 6000 rpm before back-EMF or bearing limits intervene. During rapid indexing, it can supply up to 8.8 Nm, so short bursts of load do not stall the axis. Conversion efficiency between stator current and mechanical output is represented by a torque constant of 0.42 Nm/A, allowing the drive controller to calculate torque from measured phase current. The three-phase winding is insulated for a DC bus of 230 V, keeping inverter voltage within common industrial power levels. An 8-pole rotor shortens the electrical period, helping reduce cogging and improve servo stiffness at low speeds.
The motor has a peak phase current of 21.6 A and a stall current of 5.5 A, which support proper drive sizing while keeping the winding within its thermal limits. Its low rotor inertia of 0.000033 kg·m² permits fast start-stop cycles without imposing excessive regenerative energy on the drive’s DC link. Magnetic coupling is represented by a voltage constant of 49 V/kRPM. A coil inductance of 17.9 mH and resistance of 2.26 Ω establish the electrical time constant that the current regulator must overcome. Integrated absolute multiturn feedback reports position without requiring a homing routine after power-up. The 75 mm mounting face and keyed shaft, which has a key depth of 2.5 mm, simplify connection to compatible pulleys or gears.
