Product Description:

The HSM320 is a brushless servo motor manufactured by Kollmorgen in the HSM Brushless Servo Motors series. Designed for closed-loop motion platforms, it supplies regulated mechanical power to conveyors, pick-and-place heads, and other automation axes that require consistent speed and repeatable positioning. Electronic commutation eliminates brush wear while allowing a compatible servo drive to regulate shaft torque, velocity, and position from motor feedback. The compact motor is suitable for automated equipment that performs frequent starts, stops, and direction changes under controlled loads.

Under continuous duty, the motor delivers 2.3 N·m of torque, which helps with gear-stage selection and steady-state load evaluation. Electrical back EMF increases at 34 V/kRPM, allowing a compatible drive to regulate speed while accounting for the voltage generated by the rotating motor. The rotor can reach 5000 rpm, providing a broad operating range for direct-drive and geared applications. For rapid acceleration, the motor can produce a peak torque of 6.78 N·m during short bursts that overcome load inertia or friction. Friction torque is 0.028 N·m, while a damping coefficient of 0.014 N·m/kRPM accounts for speed-dependent mechanical losses. The motor has a six-pole magnetic structure and a square-wave torque constant of 0.31 N·m/A for compatible commutation control. Its phase resistance is 1.3 Ω, which affects winding losses and the voltage required to produce current.

The phase inductance is 3.4 mH, limiting the rate of current change and reducing inverter-generated ripple in the windings. Dynamic response is aided by a rotor inertia of 0.000080 kg·m², so the shaft can accelerate and decelerate quickly under appropriate drive control. The sine-wave torque constant is 0.28 N·m/A, relating phase current to the torque produced during sinusoidal commutation. Heat transfer from the motor housing is characterized by a thermal resistance of 0.89 °C/W, which must be considered when evaluating continuous operation and mounting conditions. The shaft end includes an M4 × 0.7 mm threaded hole with a depth of 10 mm, providing a practical attachment point for compatible timing pulleys or rigid couplings. Proper coupling alignment helps limit unwanted bearing loads and supports stable operation during repeated motion cycles.