HSM490 Kollmorgen
Wake Industrial LLC is not an authorized distributor of this product.
The Kollmorgen HSM490 is part of the HSM Brushless Servo Motors series and features a NEMA 56C mounting frame with an overall length of 12.40 inches. The motor offers a voltage constant of 90 V per kRPM and a sine wave torque constant of 0.74 Nm per ampere. It weighs 12.2 kilograms and has a rotor moment of inertia of 0.00068 kg-m².
Internal Product Review
The HSM490 is a Kollmorgen brushless servo motor with a NEMA 56C mounting frame and a 12.2 kg motor net weight. A 0.74 Nm/A sine wave torque constant paired with 0.00068 kg-m² rotor moment of inertia supports responsive acceleration and stable servo tuning. Low 0.48 °C/W thermal resistance makes the HSM490 a very capable choice for precise motion applications.
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Product Description:
The HSM490 is a brushless servo motor produced by Kollmorgen within the HSM Brushless Servo Motors series. It is intended for closed-loop positioning and velocity control in automated machinery where compact dimensions and repeatable torque delivery are required. By combining rare-earth magnets with closely matched windings, the unit converts drive current into shaft torque while maintaining synchronization with digital motion controllers. This performance supports indexing, contouring, and tension-regulation tasks in industrial environments.
The motor has a sine-wave torque constant of 0.74 Nm/A and a square-wave torque constant of 0.81 Nm/A. These values indicate the incremental torque produced for each ampere of phase current under the respective commutation methods. A back-EMF voltage constant of 90 V/kRPM establishes the proportional relationship between rotor speed and induced voltage, allowing the drive to estimate speed from terminal feedback. Current dynamics are shaped by a stator inductance of 5.4 mH, which moderates ripple during PWM switching. A phase resistance of 0.90 ohm contributes to copper losses that must be dissipated through the housing. Supplementary values include 0.068 Nm/kRPM of viscous damping, 0.14 Nm of friction torque, and a thermal resistance of 0.48 °C/W. These values assist with servo sizing, steady-state thermal analysis, and control bandwidth calculations. The power connector accommodates 12 AWG conductors, while 14 AWG wiring is recommended for cabinet runs to limit voltage drop over typical distances.
A NEMA 56C mounting face aligns the motor flange with compatible gearboxes and pumps. The overall length without a brake is 12.40 in, which keeps the required installation depth moderate. The motor weighs 12.2 kg, providing enough mass for heat absorption without making installation unnecessarily difficult. Its rotor inertia of 0.00068 kg-m² supports rapid acceleration and deceleration during repetitive pick-and-place cycles. The distance from the faceplate to the connector center is 11.26 inches, which helps determine cable clearance and harness routing in compact machine layouts. Forced airflow around the housing can improve heat removal during continuous-duty motion profiles.
