LSM34N-21-602-E2-2KA Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The LSM34N-21-602-E2-2KA is a brushless servo motor from Kollmorgen, part of the LSM Brushless Servo Motors series. It has a continuous torque of 2.4 Nm, peak torque of 8.8 Nm, and can reach speeds up to 6000 RPM. The motor includes a 2000 line incremental encoder for feedback and a flange size of 85 mm with a 0.5 inch shaft diameter.
Internal Product Review
The LSM34N-21-602-E2-2KA is a Kollmorgen brushless servo motor with 2.4 Nm continuous torque and 8.8 Nm peak torque. A 2000 line incremental encoder and 6000 RPM maximum speed support precise, responsive motion control in demanding servo applications. Strong torque density makes the motor a very capable choice for high-performance axis designs.
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Product Description:
The LSM34N-21-602-E2-2KA is a brushless servo motor manufactured by Kollmorgen for the LSM Brushless Servo Motors series. The unit serves as the rotary actuator in closed-loop motion systems, transforming drive currents into precise shaft position and velocity. Within automated packaging lines, pick-and-place equipment, and small machining centers, it provides a high dynamic response so controllers can follow programmed motion profiles without overshoot. Its design supports the rapid acceleration cycles required by indexing cams and coordinated multi-axis cells.
At rated load, the motor supplies 2.4 Nm of continuous torque while maintaining thermal equilibrium, and it can reach a short-term limit of 8.8 Nm during acceleration bursts. Sustaining those torque levels requires only 5.5 A of continuous stall current, a moderate demand that simplifies drive selection and minimizes cable heating. The electromagnetic design provides a torque constant of 0.42 Nm/A, indicating how output rises with commanded current. Mechanical output speed is permitted up to 6000 rpm, allowing torque and velocity to be balanced across a wide range of gear ratios. A 2000-line incremental encoder supplies feedback, while the 85 mm square flange aligns with IEC drilling patterns. A keyed 0.5-inch shaft transmits the load, and the integral 24 VDC brake holds the shaft in position when power is removed.
The electrical constants determine how the motor interfaces with its servo amplifier. A back electromotive force of 49 V/krpm indicates the voltage generated at a given speed, so operation at 3,000 rpm produces approximately 147 V of phase electromotive force. The stator winding has an inductance of 17.9 mH, which smooths current ripple, and a phase resistance of 2.26 Ω, which affects copper loss at the selected current-loop gain. Power is supplied from a nominal 230 VAC source, matching common industrial power systems. The moderate inductance and resistance allow the motor to react quickly while maintaining stable current regulation during dynamic load changes.
