12 N·m Closed Loop Stepper Motor with 17-Bit Absolute Encoder, 86 mm Frame — iESS86-80-120-17BC

Product Overview

The iESS86-80-120-17BC is a 12 N·m Closed Loop Stepper Motor built on an 86 mm frame with a 156 mm body length. The motor and its drive share one housing and carry a 17-bit absolute encoder, making the unit a strong building block for high-load axes that must keep their position reference without a homing run after power-up. Because driver and motor arrive as one assembly, machine builders avoid a separate drive cabinet and cut the wiring work on every axis.

Absolute Feedback and Control

The 17-bit absolute encoder reports the absolute shaft position, so the controller always knows where the axis sits. The closed loop corrects position in real time, combining the torque behavior of a stepper with the positioning discipline of a servo. This arrangement reduces the risk of step loss on heavy loads and supports multi-turn position tracking, which is valuable on vertical axes and pallet changers where restart offset cannot be tolerated.

Key Specifications

• Frame size: 86 mm
• Body length: 156 mm
• Holding torque: 12 N·m
• Rated current: 6.0 A
• Feedback: 17-bit absolute encoder

Torque and Thermal Notes

With 12 N·m holding torque, the unit is suited to heavy positioning work such as machine tool axes and large indexing tables. The drive is tuned for low heat generation, which helps keep the large frame from transferring excess heat into the machine structure. Low vibration and fast acceleration are supported by the closed loop response, so the axis settles quickly and keeps cycle times predictable.

Industrial Applications

This torque class appears in packaging machinery, textile equipment and compact industrial automation where large frames must move precise distances. It is also the practical choice for CNC machine tools, rotary tables and other heavy-duty axes that benefit from absolute position memory across power cycles.

Selection Guidance

Verify the 86 mm flange and 156 mm body fit the machine envelope, and confirm the 6.0 A demand against the DC bus. Because the encoder is absolute, plan the fieldbus or pulse interface according to your controller before ordering. Lyenwsin can provide torque-speed data and application support to help you size the axis correctly.