Optical Encoder 300PPR Integrated Stepper, 0.18Nm – Nema 14 High Torque Closed_loop Design

Product Overview

This Nema 14 bipolar stepper motor features a robust 0.18Nm (25.5oz.in) holding torque at 0.8A rated current per phase. It is equipped with a 300PPR optical incremental encoder providing real-time position feedback with 2-channel output. The motor combines high torque and precision within a compact 35x35mm frame, making it ideal for medium-sized automation, CNC, and robotics applications.

Key Features

• Bipolar stepper motor with 1.8° step angle and 0.18Nm holding torque

• Integrated 300PPR optical incremental encoder with 2 output channels

• Rated current of 0.80A and operating voltage of 5.40V

• Compact frame size of 35 x 35mm with 48mm motor length

• D-cut shaft with 16.5mm length for secure coupling

• Encoder output frequency up to 30kHz ensures reliable feedback

Technical Specifications

Electrical Parameters

• Step Angle: 1.8°

• Holding Torque: 0.18Nm (25.5oz.in)

• Rated Current/Phase: 0.80A

• Voltage: 5.40V

• Phase Resistance: 6.8Ω

• Inductance: 10.0mH ±20% (1kHz)

• Insulation Class: B (130°C / 266°F)

Mechanical Dimensions

• Frame Size: 35 x 35mm (Nema 14)

• Motor Length: 48mm

• Shaft Diameter: Φ5mm

• Shaft Length: 24mm

• D-Cut Shaft Length: 16.5mm

• Number of Leads: 4

• Lead Wire Length: 500mm

Encoder Details

• Type: Optical Incremental

• Resolution: 300PPR

• Driving Voltage: 5VDC

• Output Current: ≤20mA

• Output Signal: 2 Channels (A/B)

• Shaft Diameter: Φ5mm

• Output Frequency: ≤30kHz

• Output Low Voltage: ≤0.3VDC

• Output High Voltage: ≥3.4VDC

Typical Applications

• Medium-sized CNC machines

• Industrial automation equipment

• Robotics and motion control

• Precision positioning systems

• Medical instrumentation

Why Choose This Motor?

A high-torque, precision Nema 14 stepper motor with integrated optical encoder—perfect for reliable closed-loop control in mid-range motion applications.