20 N·m Brake Closed Loop Stepper - NEMA 42 with Fail-Safe Brake

20 N·m Brake Closed Loop Stepper for Heavy Factory Axes

The 110J12190EC-1000-SC is a 20 N·m Brake Closed Loop Stepper in a NEMA 42 frame, delivering 20 N·m holding torque in a 190 mm body with 1,000 P/R encoder feedback at 6.8 A per phase on a 19 mm shaft.

Stall Is Detected, Not Silent

The 1,000 P/R encoder closes the position loop, so the drive detects and corrects missed steps instead of letting the axis drift. This is the central advantage over open-loop steppers: the motor can be pushed closer to its torque limit because stall is detected rather than silent.

Brake for Fail-Safe Holding

When power is removed, the integrated brake locks the rotor. Vertical CNC axes and handling mechanisms therefore stay put during power outages or idle periods, protecting both the workpiece and the machinery.

Specifications

• Motor type: 3-phase hybrid stepper, closed loop, with brake
• Frame size: NEMA 42
• Body length: 190 mm
• Phase current: 6.8 A
• Holding torque: 20 N·m
• Shaft diameter: 19 mm
• Feedback: integrated 1,000 P/R encoder

Applications

CNC machine tools, factory automation, and precision robotic mechanisms are the intended markets. The motor also fits food processing and automated handling systems where reliable indexing and safe stopping are required. Heavy-load CNC axis and rotary table indexing moves keep position when power drops. Lyenwsin offers this 20 N·m Brake Closed Loop Stepper with compatible drives and brake wiring support.

System Checkpoints

Verify the encoder direction matches the drive setting before locking in the homing routine. Test the brake with the rated load attached and confirm the release delay does not cause the axis to drop. For machines with multiple brake axes, coordinate the brake supply with the safety relay circuit. Keep a spare encoder cable in the maintenance kit, as feedback wiring is the most common point of failure in closed loop retrofits.