7.8 N·m Closed Loop Stepper Motor - NEMA 34 with 1,000 P/R Feedback

7.8 N·m Closed Loop Stepper Motor with a NEMA 34 Frame

The 86J12156EC-1000-60 is a 7.8 N·m Closed Loop Stepper Motor with a 156 mm body length and 7.8 N·m holding torque at 3.0 A per phase on a 14 mm shaft. In the NEMA 34 size class, that torque is achieved without moving to the larger 110 mm frame, which keeps the overall drive system compact.

Encoder Feedback and Load Recovery

The integrated 1,000 P/R encoder gives the drive a continuous view of rotor position. If the load exceeds the available torque, the drive detects the deviation and recovers, instead of allowing the axis to lose steps silently as an open-loop system would.

Running Behavior

At 3.0 A phase current the motor runs cool enough for enclosure mounting in many cases, and the three-phase construction contributes to smooth, low-vibration rotation at speed. Response is fast and operating noise is low, both important in operator-facing equipment.

Specifications

• Motor type: 3-phase hybrid stepper, closed loop
• Frame size: NEMA 34
• Body length: 156 mm
• Phase current: 3.0 A
• Holding torque: 7.8 N·m
• Shaft diameter: 14 mm
• Feedback: integrated 1,000 P/R encoder

Application Notes

Packaging lines, textile machinery, and precision robotic mechanisms are the primary fit. The motor’s torque and compact footprint also suit factory automation stations where several axes must be driven from a shared control cabinet. Lyenwsin supplies this 7.8 N·m Closed Loop Stepper Motor with compatible drives and encoder cabling.

Commissioning Guide

Begin with conservative acceleration values and raise them once the encoder loop confirms stable position tracking. Because running torque falls with speed, compare the load requirement against the torque-speed curve at the working RPM rather than using holding torque. For multi-axis stations, the 3.0 A draw keeps the cabinet supply simple. If the machine runs long shifts, monitor case temperature during the first production week and adjust the drive current setting if the frame runs warmer than expected.