Product Description:

The B-102-A-29-021 is a brushless servo motor produced by Kollmorgen for the Kollmorgen Goldline B and BH Motors series. It is intended to deliver precise velocity and torque control inside industrial automation cells, pairing with servo drives to position tooling, conveyors, or rotary actuators. The model integrates an internal rotor and frameless resolver feedback to provide closed-loop operation without external sensors, which helps keep the motor package compact for tightly spaced machine layouts. This arrangement also supports stable low-speed control during repeated starts, stops, and direction changes.

Under continuous duty, the motor draws 2.4 A RMS from the drive and reaches a rated mechanical speed of 7500 RPM. The three-phase stator has 6.80 ohms of DC resistance and an inductance of 30.0 mH, so the drive must supply adequate voltage response for current regulation. The back EMF constant is 20.9 V RMS/kRPM; when the shaft turns at nominal speed, the phase-to-phase voltage approaches the 250 V RMS line-to-line limit, leaving margin for regeneration control. With four magnetic poles, the motor achieves smooth commutation while delivering a peak torque capability of 2.41 N·m for transient load changes. Rated power output is 0.54 kW, which suits compact pick-and-place heads or spindle indexing where moderate continuous power and high bursts are required.

The drive can command up to 7.2 A RMS during acceleration. At 40 °C, the motor has a stall torque of 0.84 N·m, and it supports a theoretical acceleration rate of 78 100 rad/s² when coupled to light loads. A torque constant of 0.35 N·m/A RMS links current to output torque, enabling accurate force control for tensioning or pressing tasks. The rotor’s 0.000031 kg·m² inertia minimizes overshoot, and total motor mass is only 2.5 kg, which helps on moving axes with strict payload limits. Shielded cabling is advised for noise immunity, and the windings tolerate the standard servo bus voltages used in compact motion controllers.