LSM75-21-602-S-0KA Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
MPN: M.1302.1223
The Kollmorgen LSM75-21-602-S-0KA is a brushless servo motor from the LSM Brushless Servo Motors series. It provides a continuous torque of 2.36 Nm with a peak torque of 8.8 Nm and operates at a rated speed of 6000 rpm, drawing up to 21.6 A peak current. The motor offers single-turn high resolution feedback and supports a supply voltage of 230 V.
Internal Product Review
The LSM75-21-602-S-0KA is a Kollmorgen brushless servo motor engineered for responsive motion control, with a 230 V supply rating and 6000 rpm rated speed. Single-turn high-resolution feedback and 8.8 Nm peak torque give this motor excellent positioning accuracy and strong dynamic performance.
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Product Description:
Kollmorgen manufactures the LSM75-21-602-S-0KA within the LSM Brushless Servo Motors series. The unit is a brushless servo motor intended for industrial automation where closed-loop drives must position loads accurately and accelerate quickly. By coupling to a gearbox or pulley through its keyed shaft, the motor converts electrical power from the drive into mechanical torque for assembly machines, indexing tables, and compact robotic joints.
The motor delivers a continuous output of 2.36 Nm at its rated shaft speed of 6000 rpm, providing steady torque for duty-cycle operation. A drive can command bursts up to 21.6 A peak, so current overhead is available for rapid starts or stops, while the supply section is designed for 230 V AC buses found in light-industrial cabinets. With a torque constant of 0.42 Nm/A, each additional ampere from the amplifier increases shaft torque in a predictable linear manner. Stall current is 5.5 A peak, indicating how much drive capacity is required to hold a static load. An eight-pole rotor works with single-turn, high-resolution feedback to maintain commutation accuracy, and the keyed shaft ensures positive coupling to the driven element. The motor can carry 24 kg of radial load at 6000 rpm without exceeding bearing limits, and the copper windings have a resistance of 2.26 Ω.
Peak dynamic events are covered by a ceiling torque of 8.8 Nm, letting the axis overcome inertia reflected from tooling. The rotor inertia is only 0.000033 kg·m², so velocity changes occur quickly with limited drive energy. Back EMF rises at 49 V/kRPM, which helps match the motor to drives that can handle regenerated voltage during deceleration. The phase set has an inductance of 17.9 mH, shaping current rise time and filtering switching ripple. There is no integrated brake; therefore, holding force must be provided by the drive or an external clamp.
