Custom Nema 23 Stepper Motor 57mm Step Motor High Torque for Cnc Router Factory, Manufacturers- Suzhou Retek Electric Technology Co., Ltd

NEMA 23 Stepper: The Workhorse of Industrial CNC and Robotics

The NEMA 23 stepper motor, with its 2.3 inch (approx. 57mm) square face, is the standard for medium-to-large CNC routers, mills, and heavy-duty positioning systems.

This motor size is designed to deliver a high continuous holding torque, typically ranging from 1.0 Nm to over 3.0 Nm for longer-stack variants. Its robust construction can handle the mechanical forces associated with high-speed gantry movement and milling cutting forces. The NEMA 23 remains popular due to its excellent torque-to-cost ratio and the simplicity of implementing precise positioning using standard open-loop step/direction drives.

Introduction

Detailed Parameters and Performance Data

RETEK: High Torque Density for Machine Tools

Suzhou Retek Electric Technology Co., Ltd. specializes in NEMA 23 motors designed for continuous, high-load operation in industrial environments. Our focus is on maximizing the power transfer capacity by optimizing the magnetic stack length and material choice. We provide low-inductance windings that maximize torque availability at the higher speeds used in modern CNC processing, offering reliable performance without the complexity or cost of a full servo system.

Applications

Advanced Technology Highlights

High-Load Applications for NEMA 23 Stepper Motors

Mid-Sized CNC Routers and Laser Cutters: Driving X, Y, and Z axes against the inertia of the gantry and the resistance of the cutting process. Challenge: Maintaining torque at high feed rates.
Automated Guided Vehicles (AGVs): Steering mechanisms or light drive wheels.
Industrial Camera and Sensor Positioning: High-resolution pan/tilt platforms for inspection systems.
Packaging Machinery: Indexing and feeding mechanisms requiring rapid, accurate starts and stops.

Technical Specifications

Industrial & Commercial Usage

Technical Parameters (NEMA 23 Series)

Parameter	Range / Typical Value	Unit
Frame Size (NEMA)	23 (57mm)	Standard
Step Angle	1.8	Degrees
Holding Torque	1.0 to 3.5	Nm
Rated Phase Voltage	2.0 to 4.0	V
Shaft Diameter	6.35 or 8.0	mm

Additional Information

Supplementary Details & Notes

Integrated Production and Customization Workflow

Our NEMA 23 production line includes advanced robotic winding to ensure consistency in phase resistance and inductance, critical for predictable performance when driven by industrial controllers. We test dynamic torque output across the full speed range.

Winding Customization: Offering low-inductance windings tailored for high-speed CNC applications, sacrificing some low-speed torque for high-speed performance.
Integrated Brakes: Factory mounting of power-off electromagnetic brakes for Z-axis applications requiring fail-safe holding against gravity.
IP Rating: Upgrading sealing options to achieve IP65 rating for protection against cutting fluids and dust in a machine tool environment.
Encoder Mounting: Pre-aligning and mounting high-resolution encoders (e.g., 1000 or 2500 lines per revolution) for closed-loop servo control integration.

Service & Support

Technical Advantages and Core Design Features

High Holding Torque: The primary advantage, ensuring the motor maintains its commanded position against significant external loads, even when stationary.
Excellent Positional Repeatability: Inherently high step accuracy makes it ideal for precision indexing and machine tool axes.
Closed-Loop Ready: Designed with an optional rear shaft extension for mounting high-resolution encoders, enabling an easy upgrade to a servo-stepper system.
Thermal Efficiency: Larger frame size allows for better heat dissipation than NEMA 17, enabling higher continuous current settings and torque output.
Mechanical Robustness: Utilizes high-quality bearings and robust shaft connections to withstand the forces encountered in CNC environments.

Frequently Asked Questions

Common Inquiries Regarding NEMA 23 Steppers

Q: How do I select the right current for my NEMA 23 motor?
A: The motor should be driven at its rated phase current. However, for continuous operation, the current may need to be reduced (typically 70%−90%) to manage heat and prevent the motor from exceeding its maximum thermal class (e.g., 80∘C).

Q: What causes the mid-range instability (resonance) in stepper motors?
A: Resonance occurs when the natural mechanical frequency of the motor rotor and load matches the step pulse frequency, causing vibration and potential step loss. Mitigation involves using micro-stepping drives, incorporating a damper, or using closed-loop control to actively damp the oscillation.

Q: Is the high holding torque maintained at high speeds?
A: No. Due to the back EMF and winding inductance, torque degrades significantly with speed. You must consult the motor's speed-torque curve to ensure sufficient torque is available at your required operating speed.

Resources

Advanced Material Selection Guide

Magnets: High-flux sintered NdFeB magnets, specifically designed to resist demagnetization from the high currents used in this frame size.

Housing: Precision-machined aluminum housing and end bells for maximum dimensional accuracy and heat conduction.

Shaft: Hardened and polished 8mm steel shaft, typically keyed or equipped with a D-cut for secure connection to pulleys or couplings.

About Jiangsu Retek Motion Co., Ltd.

Unlike other motor suppliers, Retek engineering system prevents the selling of our motors and components by catalogue as every model is customized for our customers. The customers are assured that every component they receive from Retek is designed with their exact specifications in mind. Our total solutions are a combination of our innovation and a close working partnership with our customers and suppliers.

As China Nema 23 Stepper Motor 57mm Step Motor High Torque for Cnc Router Manufacturers and Wholesale Nema 23 Stepper Motor 57mm Step Motor High Torque for Cnc Router OEM/ODM Suppliers, Retek business consists of three platforms: Motors, Die-Casting and CNC manufacturing and wire harness. Retek products are widely supplied for residential fans, vents, boats, airplanes, medical facilities, laboratory facilities, trucks and other automotive machines.

Welcome to send us an RFQ, it is believed you will get the best cost-effective products and services here!

Customized Solutions

Quality Assurance

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