Optical Encoder 1000PPR Integrated Stepper, 4.5Nm – Nema 34 Closed_loop High Torque Design

Product Overview

This Nema 34 closed-loop stepper motor offers a powerful holding torque of 4.5Nm (637.25oz.in) and integrates a high-resolution optical incremental encoder for precise position feedback. With a rated current of 6.0A and a robust shaft featuring a keyway, this motor is well-suited for demanding industrial applications that require high torque and reliable closed-loop performance. Its differential encoder output ensures noise immunity and signal integrity even in electrically noisy environments.

Key Features

• Closed-loop control with optical incremental encoder (1000PPR / 4000CPR)

• Strong holding torque: 4.5Nm (637.25oz.in)

• High current capacity: 6.0A per phase

• Sturdy 14mm shaft with 25mm keyway for enhanced torque transfer

• 2-phase bipolar stepper with 1.8° step angle

• Durable Nema 34 frame with optimized heat dissipation

• Ideal for heavy-load automation systems and precision equipment

Technical Specifications

Electrical Parameters

• Step Angle: 1.8°

• Holding Torque: 4.5Nm (637.25oz.in)

• Rated Current/Phase: 6.0A

• Phase Resistance: 0.34Ω

• Inductance: 2.4mH ± 20% (1kHz)

• Insulation Class: B (130°C / 266°F)

Mechanical Dimensions

• Frame Size: 86 x 86mm (Nema 34)

• Body Length: 95.8mm

• Shaft Diameter: Φ14mm

• Shaft Length: 37mm

• Keyway Length: 25mm

• Number of Leads: 4

• Lead Length: 270mm

• Weight: 2.1kg

Encoder Details

• Encoder Type: Optical Incremental

• Output Type: Differential

• Signal Channels: 2

• Resolution: Typically 1000PPR (4000CPR equivalent)

• Supply Voltage: 5V

• Output High Voltage: < 4V

• Output Low Voltage: < 1V

Typical Applications

• CNC machinery and industrial automation

• Robotics and high-inertia systems

• Packaging and textile equipment

• Medical diagnostic devices

• Printing systems and conveyors

Why Choose This Motor?

Heavy-duty Nema 34 performance meets precise closed-loop control—engineered for powerful, reliable motion in the most demanding environments.