2.0 N·m 57 mm Closed Loop Stepper with 17-Bit Absolute Encoder

Introduction

The iESS57-36-20-17BC is a 2.0 N·m 57mm Closed Loop Stepper with an 80 mm body length and a 17-bit absolute encoder. Its single-piece construction contains both the motor and the drive, keeping the installation footprint small and removing the separate driver from the electrical panel. For small and medium machines, this compact layout shortens assembly time and reduces the number of components that can fail or be wired incorrectly.

Position Feedback

The 17-bit absolute encoder provides the controller with an unambiguous shaft position reference, so no homing run is required after power-up. Real-time error correction in the closed loop keeps the axis on its commanded path even when load torque changes during the move. This makes the unit well suited to stations where product weight varies from cycle to cycle.

Specification Summary

• Frame size: 57 mm
• Body length: 80 mm
• Holding torque: 2.0 N·m
• Rated current: 5.0 A
• Feedback: 17-bit absolute encoder

Torque and Thermal Behavior

The motor delivers 2.0 N·m holding torque at a rated current of 5.0 A. Low heat generation keeps neighboring components cool, and the low-vibration design reduces stress on couplings and transmission elements. Fast acceleration is supported for short-stroke duties, which matters on packaging and robotic axes that move quickly and stop often.

Applications

The unit is applied in factory automation, packaging machinery, robotics and CNC machine tools. In the NEMA 23 class, it also serves desktop CNC and motion control projects where absolute position feedback improves reliability without the expense of a servo system. Precise robotic positioning and packaging registration tasks benefit from the encoder-based repeatability.

Selection Considerations

Check the 57 mm flange and 80 mm body length against the mechanical envelope, and confirm the 5.0 A current supply. For vertical or gravity-loaded axes, add a holding factor and verify the brake option if one is needed. Lyenwsin can recommend the right model and confirm supply and support arrangements for your region.