8.5 N·m Closed Loop Stepper With Brake - NEMA 34 2-Phase

Short Frame, Substantial Torque

The 86J18118EC-1000-LS-SCG is an 8.5Nm Closed Loop Stepper With Brake in a NEMA 34 frame, combining a compact 118 mm body with high holding torque. Rated at 8.5 N·m and 6.0 A phase current, it drives through a 14 mm shaft and uses a built-in 1,000 P/R encoder for closed loop position control. An integrated holding brake completes the package for machines that must hold position when power is removed.

Why the Short Stack Works

Torque per Unit Length

At 118 mm this is a short NEMA 34 motor that still produces 8.5 N·m. The high phase current reflects the 2-phase design, which trades current draw for the drive compatibility most control cabinets already have. For retrofit projects where axial space is tight, this body length is often the difference between a clean fit and a major mechanical change.

closed loop and Brake Behavior

The integrated 1,000 P/R encoder verifies rotor position during motion, correcting any step error before it becomes positional drift. The brake holds the load on power loss, so vertical axes and indexing mechanisms stay put when the drive is off. Together they remove the two classic failure modes of open-loop stepping: missed steps and uncontrolled axis sag.

Specifications

• Motor type: 2-phase hybrid stepper, closed loop, with brake
• Frame size: NEMA 34
• Body length: 118 mm
• Phase current: 6.0 A
• Holding torque: 8.5 N·m
• Shaft diameter: 14 mm
• Feedback: integrated 1,000 P/R encoder

Where It Fits Best

Packaging machinery, factory automation, and automated handling mechanisms are the core applications. The compact body suits retrofits where the motor cavity is limited in length but the frame size must remain NEMA 34, and the 14 mm shaft provides the stiffness needed for belt and screw drives.

Ordering and Support

As a distributor, Lyenwsin can match this motor with a suitable closed loop drive and brake controller for your voltage class. We recommend confirming the brake holding torque against the worst-case static load and keeping phase and brake wiring separated to avoid noise on the encoder line. Contact our technical support for a dimensional drawing and full wiring schematic.