Product Description:

The 6SM 57S-3000 is a brushless synchronous servo motor manufactured by Kollmorgen for the 6SM Synchronous Servo Motors series. It is intended for precision positioning and velocity control in industrial automation, where the drive commands stator currents to generate a rotating magnetic field that locks the rotor and load into the commanded motion profile. The compact frame lets the motor mount directly to gearboxes, ball screws, or belt stages inside packaging, electronics assembly, and material-handling equipment.

At its continuous operating point, the motor outputs 0.95 kW while running at 3000 rpm. This output corresponds to 3 Nm of shaft torque with a phase current draw of 2.7 A. For short transients, the drive may command 11 A, producing higher acceleration without exceeding thermal limits. The stator inductance of 35 mH filters switching harmonics, and the 1.65 Nm/A torque constant links each ampere of current to proportional torque. Standstill current is 2.8 A, so closed-loop controllers can hold position without movement. A 20-minute thermal time constant indicates how quickly the winding temperature follows load changes and assists with duty-cycle calculations.

Mechanical integration is supported by a permissible radial bearing load of 650 N and an axial load rating of 180 N, allowing the shaft to drive pulleys or pinions without auxiliary supports. When the rotor is locked, the motor can maintain 4.6 Nm, so a static holding brake may be unnecessary in suitable applications. Static friction is limited to 0.12 Nm, helping the servo achieve fine incremental movements. The copper circuit has a resistance of 6.3 Ω, resulting in I²R losses that must be removed through conduction across the 5.7 kg housing. Rotor inertia is 3.1 kg cm², balancing rapid response with stable control. The bearing loads and shaft characteristics should be considered when selecting pulleys, pinions, and other directly driven components.