Overview
The NEMA 34 8.2Nm Stepper Motor is a high-torque, two-phase bipolar stepper motor designed for applications demanding exceptional precision under high load conditions. With a 100mm frame length and a standard 1.8^\circ step angle, this motor provides smooth, high-resolution motion when paired with a microstepping driver. It comes equipped with a 14mm keyed shaft to prevent mechanical slippage under rapid acceleration or heavy rotational stress.
Key Features
Massive 8.2 N·m Holding Torque: Easily handles heavy milling loads, large structural axes, and high-inertia mechanical systems.
Rugged 14mm Keyed Shaft: Includes a machined keyway to ensure absolute torque transfer to couplers, pulleys, or gears without slipping.
Low Heat Generation: Optimized internal winding resistance ensures efficient energy conversion, keeping operation cooler under sustained loads.
Industrial Build Quality: Sealed construction protects internal components from metallic dust, oil splashes, and debris common in CNC workshop environments.
Technical Specifications
| Feature | Specification |
| Frame Size | NEMA 34 (86 mm times 86 mm) |
| Body Length | 100mm |
| Holding Torque | 8.2 N·m / 820 N·cm (\approx 1161 oz-in) |
| Step Angle | 1.8^\circ (200 Steps per revolution) |
| Rated Current | 5.0A to 6.0A per phase |
| Phase Resistance | \approx 0.55 Ohms |
| Phase Inductance | \approx 5.5 mH |
| Shaft Type | Keyed Shaft |
| Shaft Diameter | 14mm |
| Number of Leads | 4 Wires (Bipolar configuration) |
| Weight | Approx. 3.5 kg |
Ideal Applications
Large Scale CNC Routers: Driving heavy X, Y, or Z axes carrying heavy spindles over aluminum or stone-cutting beds.
Plasma & Laser Cutters: Precise high-speed positioning of large industrial gantries.
Industrial Packaging & Labeling: High-torque indexing and material feeding systems.
Robotic Arms: Heavy-duty base or elbow joints requiring high holding torque at standstill.
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