Overview
When small motors stall, the NEMA 34 8Nm Stepper Motor takes over. This high-torque, two-phase hybrid stepping motor is engineered for high-load industrial positioning systems. With a standard 1.8^\circ step angle and a robust 14mm keyed output shaft, it delivers an impressive 8 N cdot m of holding torque. Its 100mm frame size strikes an ideal balance between space efficiency and raw mechanical force, making it the top choice for heavy gantry drives, industrial automation lines, and large-format additive manufacturing systems.
Key Features
Massive 8Nm Holding Torque: Easily moves heavy axes, massive lead screws, and large direct-drive tools without missing steps.
Rugged Keyed Shaft: The 14mm diameter shaft includes a machine-cut keyway slot to eliminate pulley or coupler slippage under extreme acceleration.
Low Heat Generation: Optimized winding resistance allows the motor to run cooler for extended periods under high duty cycles.
Premium Build Quality: Features high-temperature rated insulation, precision bearings, and a reinforced aluminum end-cap design.
Technical Specifications
| Feature | Specification |
| Frame Size | NEMA 34 (86 mm times 86 mm ) |
| Body Length | 100 mm |
| Holding Torque | 8.0 N·m / 1132 oz-in |
| Step Angle | 1.8circ (200 steps per revolution) |
| Rated Current | 4.0 A to 5.0 A per phase |
| Phase Resistance | ~0.9 Ω |
| Phase Inductance | ~5.5 mH |
| Shaft Type | 14mm Keyed Shaft (With 5mm Key) |
| Shaft Length | 37 mm |
| Number of Leads | 4 Wires (Bipolar configuration) |
| Weight | Approx. 3.0 kg |
Wiring Configuration (Standard Layout)
Phase A+ : Red
Phase A- : Green
Phase B+ : Yellow
Phase B- : Blue
Note: Wiring color schemes can occasionally vary; always verify coil continuity with a multimeter before connecting to your driver.
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