Product Description:

The 6SM 37L-4000+G is a brushless synchronous servo motor produced by Kollmorgen within the 6SM Synchronous Servo Motors series. In industrial automation, it operates as a compact actuator for regulated speed and position control. This capability supports tight process control on indexing tables, gantry axes, and small material-handling devices.

The motor’s continuous electrical rating is 0.5 kW, which allows the stator windings to operate with drives sized for light-duty axes. At the shaft, it produces a nominal torque of 1.2 Nm while drawing 1.5 A from the amplifier; surge commands can draw a peak current of 6.4 A for rapid acceleration. A phase inductance of 30 mH, together with a phase resistance of 15.5 Ω, establishes the electrical time constant that influences current-loop bandwidth. When the rotor is locked, the windings tolerate 1.6 A and maintain 1.5 Nm of torque without overheating. A voltage constant of 58 mV per 1000 rpm characterizes back electromotive force generation, so drive selection must account for the intended speed ceiling. Dynamic stopping or vertical load retention is handled by a 24 VDC permanent-magnet brake that clamps the shaft when power is removed.

The motor supports a radial bearing load of 270 N and an axial bearing load of 90 N, allowing direct coupling to small pulleys or gearheads without additional supports. The rotor inertia is 1.0 kg·cm², permitting quick reversals without excessive drive effort, while static friction of 0.03 Nm keeps dither minimal during standstill regulation. A thermal time constant of 15 min indicates that internal temperatures change gradually, giving the control system sufficient time to detect an overload condition. The electromagnetic design provides a torque constant of 0.96 Nm/A, producing nearly one newton-meter for every ampere commanded and simplifying current-based torque calculations in the servo drive.