Product Description:

The 6SM 37L-4.000-09 is a brushless synchronous servo motor built by Kollmorgen within the 6SM Synchronous Servo Motors series. As a compact rotary actuator, it converts electrical power from a matched drive into controlled shaft torque and speed. The motor is suitable for automated machinery such as pick-and-place modules and light indexing axes that require precise rotary motion.

During continuous operation, the motor delivers 0.5 kW of mechanical power at its rated shaft speed of 4000 rpm. At that operating point, it supplies 1.2 Nm of torque while drawing a rated current of 1.5 A from the drive. The magnetic structure contains six stator poles, so the electrical frequency required for synchronous operation increases with shaft speed. When the shaft is locked, the winding can sustain a standstill current of 1.6 A and produce 1.5 Nm of static torque. For startup or rapid acceleration, the windings accommodate a peak current of 6.4 A, providing additional torque before thermal limits are reached. Integrated two-pole resolver feedback supplies the controller with the rotor position information required for commutation and closed-loop motion control.

The motor has a thermal time constant of 15 min, allowing it to tolerate short overloads without immediately overheating. An embedded thermal contact detects excessive heat and trips at 145 ± 5 °C to protect the winding insulation. Electromagnetic conversion is represented by a torque constant of 0.96 Nm/A, which indicates the torque produced per ampere, and a back-EMF constant of 58 V/1000 rpm, which indicates the voltage generated as speed increases. Electrical response is influenced by a winding inductance of 30 mH, which smooths current ripple, and a winding resistance of 15.5 Ω, which contributes to copper losses during operation.