86J1880EC-1000-LS 4.5 Nm Closed Loop Stepper Motor - NEMA 34

4.5 N·m closed loop Stepper Motor, NEMA 34

For axes that need NEMA 34 rigidity without the mass of a long stack, the 86J1880EC-1000-LS offers 4.5 N·m holding torque from an 80 mm body at 6.0 A per phase. The 14 mm shaft keeps the mechanical interface consistent across the NEMA 34 range, simplifying integration into existing machines.

Why the 1,000 P/R Encoder Is Built In

The encoder makes this a closed loop motor rather than an open-loop one. The drive reads real rotor position and corrects any difference between commanded and actual steps. That means no lost steps when the load torque rises abruptly, and no cumulative drift on axes that run many cycles per shift. For retrofit projects, this feedback can be paired with a compatible closed loop drive to add precision to an otherwise conventional stepper mechanism.

Mounting and Inertia Considerations

The short 80 mm stack lowers rotor inertia, which shortens acceleration time on mechanisms that move small loads quickly. Holding torque remains specified at standstill; available torque at speed is lower, so direct-drive loads must be checked against the speed-torque curve for the target cycle.

Specifications

• Frame size: NEMA 34
• Body length: 80 mm
• Phase count: 2-phase
• Phase current: 6.0 A
• Holding torque: 4.5 N·m
• Shaft diameter: 14 mm
• Feedback: integrated 1,000 P/R encoder

Applications

Applications include CNC machine tools, packaging machinery, factory automation, precision robotic mechanisms, textile and printing machinery, food processing, and automated handling mechanisms. The 4.5 N·m rating fits compact automation cells where a full-size NEMA 34 motor would be over-specified and a NEMA 23 unit would not be enough.

Selection Considerations

Selection starts with the drive. A compatible closed loop stepper drive should read the 1,000 P/R encoder output and deliver the rated 6.0 A per phase. Confirm the torque available at your working speed from the speed-torque curve, and allow for the 80 mm body length when laying out the axis. Because the stack is short, the motor offers faster acceleration response on axes that cycle quickly, which makes it a strong option for compact automation cells that need NEMA 34 stiffness without a long overhang.