NEMA 23 Closed Loop Planetary Gear Motor Kit 57MM Precision Planetary Gearbox Motor with Driver – 56PG Round Planetary Gearing System

NEMA 23 57MM Closed Loop Planetary Gear Motor Kit

The NEMA 23 planetary gear motor kit combines a high-performance 57mm closed loop stepper motor with a precision 56PG planetary gearbox and matched driver system. Featuring stable torque output, low backlash planetary gearing, and encoder feedback technology, this planetary gear motor is ideal for CNC automation, robotic equipment, conveyor systems, packaging machines, and industrial positioning applications.

This integrated planetary gearbox motor solution offers excellent low-speed torque performance, improved positioning accuracy, reduced vibration, and enhanced motion stability compared with traditional open-loop motors. The precision planetary gears structure provides high transmission efficiency and reliable long-term operation for demanding industrial environments.

Key Features of the Planetary Gear Motor

• NEMA 23 57mm closed loop stepper motor with precision planetary gearbox
• 56PG round planetary gearing system for high torque transmission
• Built-in 1000-line optical encoder feedback
• Low backlash planetary gear design
• Stable low-speed operation with reduced resonance
• High efficiency planetary gearbox suppliers grade transmission system
• Suitable for CNC, robotics, AGV, medical equipment, and industrial automation
• Custom output shaft sizes available
• Compatible with DC20-48V power supply systems
• Matched closed loop driver included

Motor Technical Specifications

Item	Specification
Motor Type	Closed Loop Planetary Gear Motor
Frame Size	NEMA 23 / 57MM
Step Angle	1.8° ±5%
Number of Phases	2 Phases
Phase Voltage	2.52 VDC
Phase Current	2.8A
Phase Resistance	0.9 Ω ±10% (20℃)
Phase Inductance	2.5mH ±20%
Holding Torque	1.26 N.m
Insulation Class	Class B
Insulation Resistance	100MΩ Min. (500V DC)
Ambient Temperature	-20℃ to +50℃
Ambient Humidity	15% to 95%
Motor Weight	Approx. 0.6 KG
Voltage Range	DC20-48V / AC24-36V
Recommended Driver	OK2D60BH or OK2D86BH

Planetary Gearbox Specifications

Reducer Series	Grade 1	Grade 2	Grade 3
Exact Reduction Ratio	3.6 / 4.25	12.96 / 15.3 / 18.06	46.66 / 55.08 / 65.03 / 76.77
Reducer Length (L mm)	48	60	72
Rated Load	20	30	40
Maximum Load	40	50	60
Efficiency (%)	90%	80%	70%
Noise Level (DB)	<60	<60	<60
Reducer Weight (KG)	0.55	0.75	0.95

Excitation Sequence and Direction of Clockwise Rotation

Step	Phase A	Phase B	Rotation Direction
1	+	+	Clockwise
2	–	+	Clockwise
3	–	–	Clockwise
4	+	–	Clockwise

Motor Wiring Diagram

Motor Signal	Wire Color	Description
Motor A+	Black	A+
Motor A-	Green	A-
Motor B+	Red	B+
Motor B-	Blue	B-

Optical Encoder Specifications

Encoder Item	Specification
Encoder Type	Optical Encoder
Pulse	1000 Lines
Power Supply	+5V
Grounding	GND

Optical Encoder Wiring Diagram

Encoder Signal	Wire Color	Function
Encoder A+	Black	EA+
Encoder A-	Blue	EA-
Encoder B+	Yellow	EB+
Encoder B-	Green	EB-
PSU +5V	Red	Power Supply
GND	White	Ground

Applications of Planetary Gear Motors

This precision planetary gear motor is widely used in:

• CNC engraving and milling machines
• Industrial robotic arms
• Packaging and labeling machinery
• AGV and automated guided vehicles
• Medical automation systems
• Textile machinery
• Semiconductor equipment
• Conveyor systems
• Laser cutting and positioning systems

Why Choose Our Planetary Gearbox Suppliers Solution

As experienced planetary gearbox suppliers, we provide reliable planetary gears transmission solutions with strict quality control and professional engineering support. Our planetary gearing systems deliver high torque density, compact structure, low backlash performance, and long operational lifespan for demanding industrial applications worldwide.

Download Datasheet

Download the full specification sheet for detailed parameters, wiring guide, and performance curves.

📄 Download PDF Datasheet