86J1865-828 3.5 N·m NEMA34 Stepper Motor - Compact 65 mm

A Low-Current 3.5 N·m NEMA34 Stepper Motor in a Short Body

The 86J1865-828 is a 3.5 N·m NEMA34 Stepper Motor, a compact 2-phase motor, 65 mm long, rated 3.5 N·m at 2.8 A with a 9.525 mm shaft. Its low phase current and short body orient it toward space- and power-constrained automation modules.

Low Current in a NEMA34 Frame

A 2.8 A rating reduces demand on the driver and power supply, which is useful in compact industrial automation panels with limited electrical headroom. The short 65 mm length answers builds where the motor cavity is small.

Engineering Data

• Frame: NEMA34 (86 mm)
• Body length: 65 mm
• Phase current: 2.8 A
• Holding torque: 3.5 N·m
• Shaft: 9.525 mm
• Type: 2-phase, open-loop

Packaging and Textile Compatibility

The motor suits light packaging mechanisms, compact CNC tool changers and textile registration rollers where modest torque and steady stepping are required. The 9.525 mm shaft pairs with compact couplings found on small-axis hardware. Because the shaft is smaller than the usual NEMA34 size, order couplings with the correct bore rather than adapting with sleeve bushings.

Heating and Longevity

Lower winding current inherently reduces heating, improving reliability in continuous-duty equipment where thermal accumulation would otherwise derate torque. The modest heat output also helps keep sealed control enclosures cooler.

Typical Axis Duty

For applications that index, dwell and repeat throughout a shift, the low current keeps temperature rise predictable. If the axis includes a holding brake or an additional pulley, account for the extra inertia when setting the drive acceleration profile so the open-loop controller can hold position reliably.

Mounting and Drive Selection

Standard NEMA34 bolt pattern and a lighter rotor make integration straightforward in frames originally sized for smaller motors. Select a driver rated for at least 2.8 A and confirm the 9.525 mm coupling bore, since that shaft is smaller than typical NEMA34 hardware. Verify the torque-speed curve for your operating speed before commissioning. Lyenwsin provides matching drives and mounting guidance for compact NEMA34 axes.