57 mm Integrated Stepper Motor with Encoder, 3.0 N·m Holding Torque

Product Overview

The iESS57-36-30-17BC is a 57mm Integrated Stepper Motor With Encoder, combining a 57 mm motor, a 100 mm body and a 17-bit absolute encoder in one housing. This arrangement simplifies mounting and reduces the wiring content of the control cabinet. For a machine builder, the payoff is a single part number that contains the complete axis drive electronics and the motor, so sourcing, stock and maintenance are all simpler.

Absolute Encoder Behavior

Because the encoder is absolute, the controller has the shaft position available immediately at power-on. The closed loop corrects the step sequence in real time, giving the axis servo-like positioning discipline while keeping the cost and simplicity of a stepper package. If the machine is stopped mid-cycle, the axis can restart from its exact last position instead of re-homing.

Key Specifications

• Frame size: 57 mm
• Body length: 100 mm
• Holding torque: 3.0 N·m
• Rated current: 4.0 A
• Feedback: 17-bit absolute encoder

Torque and Operating Characteristics

Rated at 3.0 N·m holding torque and 4.0 A, the unit handles typical machine tool and automation axis loads. The drive is tuned for low heat generation during holding, and the low-vibration profile preserves accuracy in precision mechanisms. Fast acceleration supports high cycle rates, and the 4.0 A current draw keeps the supply requirement modest for a 57 mm class motor.

Application Areas

The 57 mm frame belongs to the NEMA 23 class, so the unit fits motion control, desktop CNC, robotics and small automation stations. It is also placed in factory automation, packaging machinery and automated handling mechanisms where a reliable, compact axis with absolute feedback is worth more than the lowest possible part price.

Selection Notes

Confirm the 57 mm flange and 100 mm body fit the machine, and size the 4.0 A feed correctly. If the application is a desktop CNC spindle or a robot joint, pay attention to the torque at the required feed speed rather than the holding figure. Lyenwsin provides specifications and engineering support to confirm the right frame size for your duty.