MSM165-146-304-E2-2KA by Kollmorgen

The Kollmorgen MSM165-146-304-E2-2KA brushless servo motor is a high-performance solution in the MSM Brushless Servo Motors series by Kollmorgen. It delivers a continuous torque of 16.5 Nm (146 in-lb) and a peak torque of 54 Nm (478 in-lb), providing robust power for demanding motion tasks. The unit achieves a top speed of 3000 rpm and features a voltage constant of 161 V/KRPM (peak, phase to phase) for efficient electromagnetic conversion. With a torque constant of 1.34 Nm/Amp and a maximum current rating of 52.3 amps Peak, this motor balances precise control with high dynamic response. Designed with 6 poles, it ensures smooth torque delivery and reduced acoustic noise, all housed in a frame weighing 16.3 kg (35.9 lb) for optimal power-to-weight ratio.

Performance characteristics of the MSM165-146-304-E2-2KA emphasize rapid current response and thermal stability. The winding resistance of 1.56 Ohms paired with a winding inductance of 18.5 mH yields an electrical time constant suited to fast command tracking and minimized ripple. Stall currents peak at 13.6 amps, enabling strong starting torque under load, while the embedded electromagnetic brake, powered by 24 VDC, secures position in vertical or safety-critical applications. Rotor inertia of 0.0036 kg·m² (0.0319 lb-in·s²) ensures agile acceleration, and even with the brake engaged, inertia remains low at 0.0044 kg·m² (0.0386 lb-in·s²). The shaft, machined from durable ST-60 steel, accommodates heavy-duty couplings and resists deformation under peak loads.

Reliability and seamless integration are core to this servo motor's design. Integrated thermal sensors monitor internal winding temperature, enabling real-time thermal protection and extended service life in continuous operation. Position feedback is provided via an incremental encoder interface, supporting precise homing and closed-loop performance. The motor body features integrated power and feedback connectors that simplify wiring and reduce installation time in complex automation cells. A standardized M8 x 1.25 mm, 19 mm-depth threaded shaft hole facilitates secure attachment of gears, pulleys, or couplings. Ideal for industrial automation, robotics, CNC machinery, and packaging systems, the MSM165-146-304-E2-2KA servo motor delivers dependable motion control under the most demanding application requirements.