• 3 phase, NEMA34 frame size
• 70 mm long
• 5.0 A phase current
• 2.2 N.m holding torque
• 12 mm shaft size
• Built with high quality materials.High precision, low motor heating, and low vibration。
The 86J1270-650 is a 2.2 N·m 3-Phase Stepper Motor in a NEMA34 (86 mm) frame, producing 2.2 N·m of holding torque at a 5.0 A phase current. Its 70 mm body is the shortest in this frame class, designed for axes where axial space is at a premium but a NEMA34 flange is still required.
Short stepper bodies generally give up some low-speed torque compared with longer variants but remain well suited to mid-speed indexing and positioning. The 5.0 A winding provides reserve torque response within the operating speed band, while three-phase excitation keeps vibration and noise low even in rapid motion.
The 12 mm shaft couples to light payloads through standard hardware. The NEMA34 flange ensures a rigid fixture. Open-loop control means only step and direction wiring is needed from the drive, which shortens the installation time on the machine.
It fits compact CNC equipment, packaging machinery, factory automation, compact robotic mechanisms, textile machinery, printing machinery and food processing. Food-processing equipment often values the compact length, which frees space inside washdown-rated enclosures while still delivering dependable open-loop motion. Machine builders who standardize on the NEMA34 mounting pattern can use this short body in modules that previously required a smaller frame.
Because the rotor is shorter than in long-body NEMA34 motors, reflected inertia at the load is easier to manage, which can improve response in quick indexing moves. Designers should still size the drive acceleration ramp to the total axis inertia so the open-loop control does not lose steps on fast starts or stops.
Pair it with a 3-phase drive rated for at least 5.0 A. The short length frees machine space, and the low-noise open-loop design supports smooth operation in continuous-handling applications. Confirm the load inertia and operating speed against the torque-speed curve, since shorter stacks reach their torque limit earlier than long-body motors. Lyenwsin provides application guidance and matching drive options to complete the axis.
| Model | 86J1270-650 |
| Phase | 3 |
| Step Angle（deg） | 1.2 |
| Holding Torque(N·m) | 2.2 |
| Rated Current（A） | 5 |
| Phase Resistance(ohm) | 0.96 |
| Phase Inductance（mH） | 2.4 |
| Detent Torque（mN·m） | 1000 |
| Rotor inertia（g·cm²） | 1100 |
| Insulation Class | B |
| Number of Leads | 6 |
| Weight（kg） | 1.7 |
| Length（mm） | 70 |
| Matched Drive | 3DM860 |
| Frame Size（NEMA） | 34 |
| Shaft Diameter（mm） | 12 |
| Frame Size(mm) | 86 |
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