Product Description:

The B-402-BD-99-TS-294 is a brushless AC servo motor built by Kollmorgen for the Goldline B and BH Motors series. It is intended for industrial automation that requires precise torque and velocity control, including pick-and-place axes, web handling spindles, and indexing stations. The motor converts three-phase drive current into controlled mechanical rotation while keeping a compact form for machine-mounted or cabinet-mounted servo systems. Its brushless design supports repeatable response during frequent start-stop cycles and continuous motion tasks. It is typically paired with a servo amplifier that regulates current and speed from machine commands.

A back electromotive force of 67.2 VRMS/kRPM means the servo drive must supply voltage in proportion to shaft speed. Under rated conditions, the windings draw 6.4 Arms to produce a continuous torque of 7.4 N·m at 25 °C, and that continuous torque drops to 6.8 N·m when the housing reaches 40 °C. The motor has a line-to-line inductance of 50 mH and a resistance of 2.60 Ω, which affect current rise and copper loss. Applied phase voltage is limited to 250 VRMS, and the motor can run steadily at 3000 rpm while delivering rated output to the load. A thermal resistance of 0.48 °C/W describes how heat moves from the stator to the surrounding air.

For short overload events, the amplifier may momentarily supply 18.8 Arms, allowing the motor to generate 19.8 N·m of peak torque for rapid acceleration. The 1.11 N·m/Arms torque constant and the 0.587 N·m/√W motor constant relate electrical input to the mechanical output available at the shaft. Peak shaft power reaches 2.2 kW at maximum operating speed, and the four-pole rotor supports stable electrical commutation across the speed range. This reserve is useful for short indexing moves and rapid starts, but sustained overload operation still depends on removing heat from the housing before thermal limits are reached.