6SM 57S-3.000 Kollmorgen
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The Kollmorgen 6SM 57S-3.000 is part of the 6SM Synchronous Servo Motors series and offers a rated power of 0.95 kW with a rated speed of 3000 rpm. This servo motor features a rated torque of 3 Nm and a peak current of 11 Amps. It supports an axial load of 180 Newtons and a radial load of 650 Newtons.
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Product Description:
The 6SM 57S-3.000 is a synchronous servo motor built by Kollmorgen for the 6SM Synchronous Servo Motors series. It supplies closed-loop rotary motion for industrial automation axes that require repeatable speed and position under varying load conditions. As part of a servo drive system, it pairs with digital controllers to move conveyors, tooling heads, and handling equipment with millisecond response.
Under continuous operation, the unit delivers a mechanical output of 0.95 kW, produced at a rated shaft speed of 3000 rpm. At this operating point, it draws 2.7 A of phase current and produces 3 Nm of torque, allowing moderate-inertia loads to follow commanded profiles without stalling. Transient demands are supported by a peak current ceiling of 11 A, so short acceleration or deceleration events can be handled without thermal overload. When the rotor is locked, standstill torque reaches 4.6 Nm with a corresponding standstill current of 2.8 A, while static friction is limited to 0.12 Nm to keep startup lag minimal. Axial and radial bearing capacities of 180 N and 650 N, respectively, protect the shaft under belt tension or overhung pulley arrangements.
The electromagnetic design centers on a torque constant of 1.65 Nm/A, so every ampere commanded by the controller adds predictable turning force. A back-EMF value of 97 V/1000 rpm must be considered when sizing the drive’s DC bus, especially during regenerative braking at high speed. The stator winding presents 35 mH of inductance and 6.3 Ω of resistance, parameters that shape current-loop bandwidth and affect the necessary PWM switching frequency. Dynamic response is also influenced by a rotor inertia of 3.1 kg·cm²; this modest mass supports quick reversals while still smoothing torque ripple.
