Product Description:

The TBM-6025-A is a frameless brushless motor kit from Kollmorgen’s TBM Frameless Motors series. Supplied as separate stator and rotor components, it is intended for direct integration into compact rotary stages, gimbals, and other space-constrained automation assemblies where eliminating a housed motor shortens the drive train and improves stiffness. By mounting the stator into the machine frame and fixing the rotor to the load shaft, designers obtain a tight mechanical envelope while retaining the precise torque and speed control expected from a permanent-magnet synchronous motor.

The electromagnetic ratings show how the kit performs under continuous duty. A continuous stall torque of 0.727 N-m is produced when the windings are supplied with a steady current of 4.56 Arms, and this pair of values indicates the load the machine can hold without motion. When operated from a bus of 48 VDC, the motor reaches its rated operating point of 2630 RPM and delivers 144 W to the shaft. Electrical losses are governed by a 0.89 Ω DC resistance at 25 °C, while the 0.6 mH line-to-line inductance shapes current ripple and drive bandwidth. The torque constant of 0.165 N-m/Arms links commanded phase current to mechanical output, enabling straightforward current-mode control strategies.

The remaining values describe short-term torque capability and the motor’s physical size. During rapid indexing or shock loading, the magnetic circuit can generate a peak stall torque of 2.82 N-m without demagnetization. The generated back electromotive force scales at 9.99 Vrms/kRPM, a value the drive must accommodate during regeneration. Dynamic response is enhanced by a rotor inertia of 0.0000252 kg-m², allowing quick acceleration of light payloads, and the total motor weight is 0.398 kg. The rotor hub provides a 28.7 mm bore, while the overall stack measures 59.06 mm in diameter and 35.56 mm in length to fit within tight housings.