Siemens 6SM57S-3 1FT5 Permanent Magnet Servo Motor

Product Brief Introduction The 6SM57S-3 is a 1FT5 series 57mm frame standard permanent magnet servo motor. It provides reliable motion control with incremental encoder feedback, designed for general-purpose industrial positioning and speed control applications.
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Technical Specifications

Frame size: 57. Rated torque: 2.5Nm. Rated speed: 3000rpm. Rated power: 0.79kW. Peak torque: 7.5Nm. Voltage class: 240V AC. Feedback: 2000-line incremental encoder. Protection rating: IP65. Operating temperature range: 0°C to +40°C.

Functional Features

High-torque permanent magnet design. Incremental encoder for precise speed and position feedback. Low-inertia rotor for fast acceleration. Smooth operation across speed range. Sealed industrial housing.

Application Scenarios

It applies to conveyor positioning, packaging machinery, material handling axes, assembly equipment and general industrial motion control.

Performance Parameters

Rated torque: 2.5Nm @ 3000rpm. Peak torque: 7.5Nm. Maximum speed: 4000rpm. Torque constant: 2.5Nm/A. Mechanical time constant: 3.5ms. Operating temperature range: 0°C to +40°C.

Material Composition

Housing: anodized aluminum. Rotor: rare-earth permanent magnets. Shaft: hardened steel. Bearings: sealed ball bearings. Encoder: optical incremental.

Structural Characteristics

Cylindrical 57mm frame, keyed shaft, rear encoder compartment, power/signal connectors, flange mounting face.

Working Principle

The drive supplies variable-frequency 3-phase AC to the stator to produce torque. The incremental encoder provides position and speed feedback for closed-loop control.

Installation Requirements

Flange mount with specified torque. Shaft alignment. Flexible coupling. Cable connection. PE ground.




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