6.8 N·m Closed Loop Stepper Motor - NEMA 34 Precision Drive

6.8 N·m Closed Loop Stepper Motor in a Short NEMA 34 Body

The 86J12126EC-1000-60 is a 6.8 N·m Closed Loop Stepper Motor measuring 126 mm with 6.8 N·m holding torque at 3.0 A per phase on a 14 mm shaft. It is the short-body member of the NEMA 34 closed loop family, specified when a machine has tight axis space but still needs the load capacity of the NEMA 34 frame.

Moving Beyond Conservative Limits

Feedback comes from an integrated 1,000 P/R encoder. The control loop continuously compares commanded position with actual rotor position, which removes the need for the conservative acceleration limits that open-loop steppers impose. The result is faster moves with deterministic positioning.

Heat and Efficiency

Rated phase current is 3.0 A. The motor’s high efficiency and low heat generation simplify thermal management inside enclosures, while the low-noise, low-vibration profile suits machines that run near operators or in laboratory-adjacent settings.

Specifications

• Motor type: 3-phase hybrid stepper, closed loop
• Frame size: NEMA 34
• Body length: 126 mm
• Phase current: 3.0 A
• Holding torque: 6.8 N·m
• Shaft diameter: 14 mm
• Feedback: integrated 1,000 P/R encoder

Suitable Applications

Desktop CNC routers, motion control systems, and compact factory automation benefit from the balance of torque, length, and closed loop reliability. It is also common in printing and food processing equipment where indexing precision matters more than peak speed. Lyenwsin can supply this 6.8 N·m Closed Loop Stepper Motor with matching drives and technical support.

Retrofit Considerations

When replacing an existing NEMA 34 motor, verify the bolt pattern and the 14 mm shaft dimensions against the old unit. The encoder cable should be routed away from power wiring to keep feedback clean. With the closed loop enabled, acceleration can be tuned more aggressively than on an open-loop axis, which shortens overall cycle time. For desktop CNC machines, the low-vibration output also improves surface finish on the workpiece.