8.5 N·m Stepper Motor 17bit Encoder — 86 mm Integrated closed loop Unit (iESS86-80-85-17BC)

Introduction

The iESS86-80-85-17BC is an 8.5 N·m Stepper Motor 17bit Encoder supplied as an integrated closed loop unit in an 86 mm frame with a 118 mm body. The drive is mounted together with the motor, which shortens the cabling path and simplifies installation into machine frames. For retrofit work and new builds alike, this one-piece design removes the driver from the cabinet and puts it exactly where it is needed, next to the axis.

17-Bit Absolute Position Tracking

Because feedback is absolute, the axis position is known from the moment the controller starts, without requiring a home sequence. Real-time correction of the step command keeps the motion repeatable even when the load changes during a cycle, a practical benefit in multi-station machines that run the same pattern hundreds of times per day.

Specification Summary

• Frame size: 86 mm
• Body length: 118 mm
• Holding torque: 8.5 N·m
• Rated current: 6.0 A
• Feedback: 17-bit absolute encoder

Torque and Operating Behavior

Holding torque is rated at 8.5 N·m, driven at a rated current of 6.0 A. The closed loop tuning keeps heat low during holding, and the low-vibration profile protects mechanisms running at steady speed. Fast acceleration supports short-cycle automation, while the absolute encoder removes the restart drift that open-loop systems accumulate over long production runs.

Where It Is Used

The model serves CNC machine tools, packaging machinery, factory automation, precision robotic mechanisms, textile machinery, printing machinery, food processing equipment and automated handling mechanisms. In each case the 8.5 N·m class covers a mid-size axis without the cost and panel space of a full servo system.

Ordering and Sizing Notes

Confirm the 86 mm flange pattern and 118 mm body length against the existing axis, and size the DC supply for 6.0 A peak demand during acceleration. If the machine already has a controller that expects absolute feedback, this unit can be configured to match. Contact Lyenwsin with your duty cycle and inertia values for a verified recommendation.