Product Description:

The TBMS-6025-A frameless motor is produced by Kollmorgen as part of the TBM Frameless Motors series. Because the stator and rotor are supplied separately, machine builders can mount the lamination stack and magnet ring directly inside a host structure, creating a compact direct-drive axis. The assembly delivers continuous torque at zero speed, making it suitable for robotic joints, rotary stages, and other automation points that cannot accommodate a full housed motor.

Under steady thermal conditions, the motor delivers 0.727 N-m of continuous stall torque, while short-duty peaks reach 2.82 N-m for rapid indexing or breakaway load conditions. A rated speed of 2630 RPM pairs with a mechanical output of 144 W, which suits the constant-power region of typical motion profiles. The back-EMF constant of 9.99 Vrms/kRPM indicates the voltage generated for each kilorevolution and helps drive electronics predict regenerated energy. Torque creation efficiency is reflected by a constant of 0.165 N-m/Arms, allowing current-loop tuning to meet dynamic torque commands without saturation.

Electrical impedance is set by a phase resistance of 0.89 ohms and an inductance of 0.6 mH; together, these values shape current rise time and affect how aggressively a servo drive can modulate phase currents. The rotor spans a diameter of 59.06 mm, giving a reference for cavity machining, and the complete motor weighs 0.398 kg, which is useful where moving mass must be minimized. A nominal supply of 48 VDC matches low-voltage mobile platforms, and the 12-pole layout improves torque density while lowering cogging. Rotor inertia is 0.0000252 kg-m², static friction is 0.033 N-m, and viscous damping is 0.00536 N-m/kRPM, all of which help predict settling behavior in precision positioning tasks.