Product Description:

The M.1015.7994 is a brushless AC servo motor produced by Kollmorgen within the HSM Brushless Servo Motors series. Designed for industrial automation, the unit converts precise drive commands into controlled mechanical motion for indexing tables, pick-and-place axes, and packaging machinery. An integrated power-off brake allows the rotor to hold its position when the drive is disabled, supporting vertical loads and safety interlocks.

The motor provides continuous torque of 3.4 Nm, which it can sustain without overheating, while the mechanical design permits a top speed of 4000 rpm for fast indexing cycles. The stator is wound for a supply of 230 VAC, matching common industrial control cabinets. With the brake installed, the overall length reaches 266 mm, which must be considered when reserving installation space or establishing gearbox clearance. For short-duty surges, the magnetic stack produces up to 11.3 Nm of peak torque, providing additional acceleration capacity. Mechanical output is transmitted through a shaft measuring 19 mm in diameter, enabling direct coupling with standardized keyed hubs. The holding brake provides 10.2 Nm of torque and has an inertia of 0.00033 kg-m². The assembled motor weighs 8.8 kg, and the brake coil is rated for 90 VDC.

The motor has a thermal resistance of 0.79 °C/W, indicating the relationship between power loss and the resulting temperature rise as heat transfers from the windings to the surroundings. Its back EMF is 60 V/kRPM, so the drive electronics must accommodate the proportional voltage increase as motor speed rises. Electrical losses are limited by a phase resistance of 2.0 Ω, while the 9.0 mH inductance smooths current ripple and helps maintain stable servo control. Maximum backlash between the brake hub and shaft spline is 44 arcmin, which must be considered when the motor is used in medium-precision positioning assemblies.