Optical Encoder 1000PPR Integrated Stepper, 12Nm – Nema 34 Closed_loop High Torque Design

Product Overview

This Nema 34 closed-loop stepper motor delivers a massive holding torque of 12Nm (1699.34oz.in), making it one of the most powerful in its class. It integrates a high-resolution 1000PPR (4000CPR) optical incremental encoder with differential output, providing closed-loop feedback for precise motion control and prevention of step loss. With its extended body length and robust 14mm keyed shaft, this motor is ideal for high-inertia and high-load industrial automation tasks.

Key Features

• Powerful 12Nm holding torque for extreme load conditions

• Integrated 1000PPR optical incremental encoder with differential signals

• High current capacity: 6.0A per phase

• Rugged Φ14mm shaft with 25mm keyway for secure coupling

• Oversized body length (187.6mm) for enhanced torque output

• Ideal for large-scale CNC systems and industrial automation

Technical Specifications

Electrical Parameters

• Step Angle: 1.8°

• Holding Torque: 12Nm (1699.34oz.in)

• Rated Current/Phase: 6.0A

• Phase Resistance: 0.72Ω

• Inductance: 7.3mH ± 20% (1kHz)

• Insulation Class: B (130°C / 266°F)

Mechanical Dimensions

• Frame Size: 86 x 86mm (Nema 34)

• Body Length: 187.6mm

• Shaft Diameter: Φ14mm

• Shaft Length: 37mm

• Keyway Length: 25mm

• Number of Leads: 4

• Lead Length: 270mm

• Weight: 5.0kg

Encoder Details

• Encoder Type: Optical Incremental

• Resolution: 1000PPR (4000CPR)

• Output Type: Differential

• Signal Channels: 2

• Supply Voltage: 5V

• Output High Voltage: < 4V

• Output Low Voltage: < 1V

Typical Applications

• Large-format CNC machines

• Industrial gantry systems

• Automated assembly lines

• Elevator drive systems

• Aerospace and defense-grade robotics

Why Choose This Motor?

Built for industrial-grade power and precision—this motor is your solution for torque-intensive, closed-loop control applications.