Optical Feedback 1000PPR Encoder Integrated Stepper, 0.054Nm – Nema 8 Closed_loop Precision Design

Product Overview

This Nema 8 closed-loop stepper motor is integrated with a high-resolution 1000PPR (4000CPR) optical incremental encoder. With a holding torque of 0.054Nm and rated current of 0.8A, it offers improved motion accuracy, feedback control, and thermal efficiency. Its compact 20mm frame and extended 68mm body make it suitable for precision systems where stability and feedback are crucial.

Key Features

• Closed-loop control eliminates missed steps and boosts precision

• Delivers 0.054Nm (7.65oz.in) holding torque at 0.8A per phase

• Compact 20x20mm frame with 4mm shaft diameter and 68mm body length

• Integrated 1000PPR optical encoder with differential output for robust signal transmission

• Ideal for lab automation, micro-robotics, medical devices, and compact motion platforms

Technical Specifications

Electrical Parameters

• Step Angle: 1.8°

• Holding Torque: 0.054Nm (7.65oz.in)

• Rated Current/Phase: 0.8A

• Resistance: 8.5Ω ±10%

• Inductance: 4.4mH ±20% (1kHz)

• Insulation Class: B (130°C / 266°F)

Mechanical Dimensions

• Frame Size: 20 x 20mm

• Body Length: 68mm

• Shaft Diameter: Φ4mm

• Shaft Length: 10mm

• Lead Wire Length: 300mm

• Weight: 123g

Encoder Details

• Type: Optical Incremental

• Resolution: 1000PPR (4000CPR)

• Output Channels: 3 Channels

• Voltage Range: 4.5V – 5.5V

• Output Type: Differential

• Output Current: Max 100mA

• High Output Voltage: ≥ Vcc - 0.4V

• Low Output Voltage: ≤ 0.4V

• Max Output Frequency: 1.85kHz 

Typical Applications

• Miniature CNC machines

• Medical devices

• Lab automation systems

• Optical positioning systems

• Compact robotic joints

Why Choose This Motor?

A longer-body Nema 8 closed-loop motor that combines real-time feedback, enhanced torque, and compact design—ideal for precise micro-motion control.