2 Phase Stepper Motor With Brake - 12 N·m NEMA 34 closed loop

Two-Phase Torque in a NEMA 34 Frame

The 86J18156EC-1000-LS-SCG is a 2 Phase Stepper Motor With Brake that brings 12 N·m holding torque to a NEMA 34 frame, making it one of the higher-output options in this 86 mm class. It combines a 156 mm body, 6.0 A phase current, and a 14 mm shaft with an integrated 1,000 P/R encoder and a holding brake. Lyenwsin supplies it as part of a complete closed loop motion package for CNC and robotic axes.

closed loop and Brake Combined

Encoder-Corrected Motion

The 1,000 P/R encoder feeds rotor position back to the drive during every move. Step loss is detected and corrected in real time, so the axis stays synchronized with the controller even when the load varies. At standstill the loop holds position actively, improving repeatability on machines where friction changes from cycle to cycle.

Fail-Safe Holding

The integrated brake locks the shaft when the drive is de-energized. Vertical axes, heavy indexing mechanisms, and idle stations stay fixed on power loss, which is a requirement on many CNC and robotic cells.

2-Phase vs 3-Phase in This Class

For a given torque, a 2-phase motor typically draws more phase current, and the 6.0 A rating reflects that trade-off. In return, 2-phase drives are widely supported, inexpensive, and easy to integrate into existing control cabinets. If your facility already runs 2-phase infrastructure, this motor drops in with minimal change.

Specifications

• Motor type: 2-phase hybrid stepper, closed loop, with brake
• Frame size: NEMA 34
• Body length: 156 mm
• Phase current: 6.0 A
• Holding torque: 12 N·m
• Shaft diameter: 14 mm
• Feedback: integrated 1,000 P/R encoder

Applications

CNC machine tools, packaging machinery, and precision robotic mechanisms are the primary fits. The 12 N·m holding torque supports direct coupling to ball screws on heavier axes, while the brake protects the tool or workholding during stops. Factory automation lines that already use 2-phase drive systems can adopt it with minimal engineering effort.

Commissioning Advice

Sequence brake release before motion and brake apply after standstill in the controller program. Confirm the encoder direction matches the motor rotation before enabling closed loop control. As your distributor, Lyenwsin provides the matching drive, connector wiring, and application support to help you validate the axis on your machine.