Product Description:

The TBMS-7615-B is a frameless brushless motor supplied by Kollmorgen within the TBM Frameless Motors series. It is intended for direct integration into a customer-built mechanical assembly, where the separate stator and rotor provide compact torque without a conventional motor housing. Because it ships as a frameless set, the motor can be installed directly around a machine shaft or bearing structure. That arrangement helps save radial space and removes the compliance that can come from belts or reduction stages. This layout supports precision automation axes, collaborative robot joints, and other motion systems that benefit from direct drive operation with reduced backlash and fewer mechanical transmission parts.

The motor operates from a constant 24 VDC bus. At this voltage, it reaches a rated mechanical speed of 2560 RPM and delivers a continuous output of 208 W. This operating range suits low-voltage motion platforms that need continuous output without a large power stage. It provides a continuous stall torque of 0.918 N-m while drawing 11.7 Arms, and it can reach a peak stall torque of 2.22 N-m during short overload periods. The continuous and peak torque values separate sustained load capability from short acceleration demand. The windings have a DC resistance of 0.2 Ω, and static friction is 0.032 N-m at startup. Its torque constant is 0.081 N-m per amp, so output torque rises in proportion to phase current.

For dynamic operation, peak acceleration current reaches 29.4 Arms, giving the drive additional current capacity during fast speed changes. Rotor inertia is 0.0000304 kg-m², which helps the motor respond quickly in reversing or indexing applications. The back electromotive force constant is 4.89 Vrms/kRPM, showing how generated voltage increases with speed. Phase inductance is 0.2 mH, which affects current rise time during rapid control updates.