XSM115-55-352-E2-2AA Kollmorgen
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The Kollmorgen XSM115-55-352-E2-2AA is a servo motor from the XSM Centurion Servo Motors series with a frame size of 115 and a net weight of 5.5 kilograms. It features a 24 volt brake, delivers a torque of 55 inch-pounds, and operates at speeds up to 3500 RPM. The encoder supplies 2000 pulses per revolution, and the shaft has no keyway with a thread size of M6 by 1.0 mm and 16 mm depth.
Internal Product Review
The XSM115-55-352-E2-2AA is a Kollmorgen Centurion servo motor with a 230 V rating and 3500 RPM speed. Incremental encoder feedback with 2000 pulses per revolution supports accurate position tracking and stable motion control. A 55 in-lb torque output makes this servo motor a strong choice for precise automation duty.
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Product Description:
The XSM115-55-352-E2-2AA is a brushless AC servo motor built by Kollmorgen within the XSM Centurion Servo Motors series. Designed for closed-loop motion platforms, the motor converts drive current into controlled rotary movement for conveyors, pick-and-place heads, and small machine tools. Its frame integrates windings, magnets, and feedback so that positioning controllers can command rapid acceleration and stable velocity in direct-drive applications without gearbox backlash. By supplying repeatable torque over a wide speed range, the unit serves as a compact actuator in factory automation cells that require precise and reliable movement.
The rated shaft speed reaches 3500 rpm, allowing direct coupling to moderate-speed load wheels without additional gearing. Continuous stall torque is 55 in-lb, providing a clear limit for holding or indexing duties. A torque constant of 0.60 Nm/A links phase current to mechanical output, while the back EMF constant of 76 V/krpm supports drive selection based on regenerative voltage margins. With a phase inductance of 7.5 mH, the motor moderates current rise to limit harmonics while supporting fast control loops. The incremental encoder delivers 2,000 pulses per revolution, providing fine position feedback to the drive. The nominal winding voltage is 230 V, which matches common industrial bus supplies and supports integration with compatible servo amplifiers.
The rotor has a reflected inertia of 0.00038 kg-m², enabling rapid starts and stops when paired with a high-bandwidth drive. A copper resistance of 1.3 ohms influences thermal rise at continuous current, while the housing has a mass of 5.5 kg that supports stable mounting and heat transfer during repeated duty cycles. The factory-installed 24-volt brake secures vertical loads during power loss and increases the overall motor length by 1.91 inches. The 115 mm square frame mounts through standard Centurion pilot dimensions, providing a consistent interface for machine frames and mounting plates. A smooth shaft without a keyway transmits torque through compression couplings and includes an M6 × 1.0 mm center thread with a depth of 16 mm for puller tools.
