• 3 phase, NEMA34 frame size,with brake
• 156 mm long
• 3.0 A phase current
• 7.8 N.m holding torque
• 14 mm shaft size
• Integrated 17bit,
• high efficiency,low noise,fast response, high torque, high speed and low vibration。
The 86J121156EC-17BC-SCG is a NEMA34 Closed Loop Stepper With Brake offering 7.8 N·m holding torque in a 156 mm body at 3.0 A per phase on a 14 mm shaft. It targets compact industrial automation where the NEMA 34 frame provides the right torque density and the brake provides fail-safe holding.
An integrated 17-bit encoder supplies high-resolution rotor position to the drive. The result is smooth motion at low speeds and accurate final positioning, with the closed loop protecting against missed steps when cutting forces or friction change during a cycle.
The integrated brake holds the load when the drive is disabled or power is lost. In packaging and textile lines, where stops and restarts happen frequently, the brake keeps the axis fixed during the stop phase and releases cleanly at restart.
Packaging machinery, textile equipment, and precision robotic mechanisms benefit from the combination of compact size, closed loop reliability, and safe holding. It is also a practical fit for automated handling systems with vertical motion segments. Lyenwsin supplies this NEMA34 Closed Loop Stepper With Brake with matched drives and brake control support.
Set the brake release signal to follow the drive enable output so the axis is never driven against a locked rotor. On textile machines with frequent e-stops, verify the brake engages within the required stopping window. The 3.0 A rating keeps thermal management simple on lines with multiple brake axes. Ask for the dimensional drawing when planning the cable routing, since the brake connector adds to the rear profile of the motor.
| Model | 86J121156EC-17BC-SCG |
| Phase | 3 |
| Frame Size（NEMA） | 34 |
| Length(mm) | 156 |
| Step Angle（deg） | 1.2 |
| Holding Torque（N·m） | 7.8 |
| Rated Current（A） | 3 |
| Phase Resistance（ohms） | 3 |
| Phase Inductance（mH） | 23 |
| Rotor inertia（g·cm²） | 4000 |
| Weight（kg） | 6.45 |
| Matched Drive | 3HCS2206H-17BC |
| Encoder Resolution | 17bit |
| Shaft Diameter（mm） | 14 |
| Frame Size（mm） | 86 |
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