Optical Feedback 1000PPR Encoder Integrated Stepper, 0.015Nm – Nema 8 Closed_loop Micro Motor Design

Product Overview

This compact Nema 8 closed-loop stepper motor integrates a high-resolution 1000PPR (4000CPR) optical incremental encoder. With a rated current of 0.6A and holding torque of 0.015Nm, it delivers precise positioning, real-time feedback, and energy efficiency. Its small form factor makes it an excellent choice for space-limited applications requiring accurate motion control and reliability.

Key Features

• Closed-loop feedback system eliminates step loss and improves positional accuracy

• 0.015Nm (2.12oz.in) holding torque with low 0.6A current draw

• Compact 20x20mm frame with 4mm shaft diameter and 44mm body length

• Integrated 1000PPR optical encoder with differential signal output

• Ideal for miniature CNCs, robotic joints, lab automation, and precise optical devices

Technical Specifications

Electrical Parameters

• Step Angle: 1.8°

• Holding Torque: 0.015Nm (2.12oz.in)

• Rated Current/Phase: 0.6A

• Resistance: 6.2Ω ±10%

• Inductance: 1.6mH ±20% (1kHz)

• Insulation Class: B (130°C / 266°F)

Mechanical Dimensions

• Frame Size: 20 x 20mm

• Body Length: 44mm

• Shaft Diameter: Φ4mm

• Shaft Length: 20mm

• Lead Wire Length: 500mm

• Weight: 0.08kg

Encoder Details

• Type: Optical Incremental

• Resolution: 1000PPR (4000CPR)

• Output Channels: 3 Channels

• Voltage Range: 4.5V – 5.5V

• Output Type: Differential

• High-Level Output Voltage: 2.4V – Vcc

• Low-Level Output Voltage: ≤ 0.4V

Typical Applications

• Miniature CNC machines

• Precision robotics

• Laboratory automation

• Medical devices

• Optical adjustment mechanisms

Why Choose This Motor?

A space-saving Nema 8 solution with closed-loop precision, real-time feedback, and low power draw—ideal for high-performance compact motion systems.