Optical Encoder 300PPR Integrated Stepper, 0.40Nm – Nema 14 High Torque Closed_loop Design

Product Overview

This Nema 14 bipolar stepper motor offers a powerful holding torque of 0.40Nm (56.64oz.in) at a rated current of 1.5A per phase. Integrated with a 300PPR optical incremental encoder, it delivers precise position feedback with 2-channel output signals. The motor’s robust design and extended 66mm length frame provide enhanced torque and reliability for demanding industrial applications.

Key Features

• High torque bipolar stepper motor with 1.8° step angle and 0.40Nm holding torque

• Integrated 300PPR optical incremental encoder with 2 differential output channels

• Rated current 1.50A and operating voltage 4.20V for strong, stable performance

• Nema 14 frame size (35 x 35mm) with 66mm motor length for greater power

• D-cut shaft with 15mm length for secure mechanical coupling

• Encoder output frequency up to 30kHz for reliable and fast feedback

Technical Specifications

Electrical Parameters

• Step Angle: 1.8°

• Holding Torque: 0.40Nm (56.64oz.in)

• Rated Current/Phase: 1.50A

• Voltage: 4.20V

• Phase Resistance: 2.8Ω

• Inductance: 3.8mH ±20% (1kHz)

• Insulation Class: B (130°C / 266°F)

Mechanical Dimensions

• Frame Size: 35 x 35mm (Nema 14)

• Motor Length: 66mm

• Shaft Diameter: Φ5mm

• Shaft Length: 24mm

• D-Cut Shaft Length: 15mm

• 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

• Industrial automation and control

• Medium to large CNC machinery

• Robotics and precision motion systems

• Medical equipment requiring high torque

• Packaging and assembly machines

Why Choose This Motor?

A high-performance, reliable Nema 14 stepper motor with integrated optical encoder—ideal for applications demanding strong torque and precise closed-loop control.