Brushless DC Linear Motor Iron Core High Force- Suzhou Retek Electric Technology Co., Ltd.

Iron Core BLDC Linear Motor: Extreme Continuous Force Density

The Iron Core Brushless DC Linear Motor operates on the same principle as a rotary BLDC motor but is unrolled into a flat structure.

The Iron Core design means the coils (primary stage) are wound around iron laminations, which provides a path for the magnetic flux. This results in the highest possible continuous force density for the physical footprint, due to the efficiency of the magnetic circuit. They offer fast, precise, and maintenance-free linear motion over potentially unlimited stroke lengths, making them a premium replacement for ball screw systems in high-throughput machinery.

Introduction

Detailed Parameters and Performance Data

RETEK: High-Throuhgput, Gantry and Machining Drives

Suzhou Retek Electric Technology Co., Ltd. provides iron core linear motors for heavy-duty, high-velocity, and large-format automation systems. We specialize in minimizing the cogging force (the inherent force ripple caused by the iron core interacting with the magnets) through advanced coil design and electronic compensation, ensuring the motion is as smooth as possible despite the high force output.

Applications

Advanced Technology Highlights

Industrial High-Force Linear Motion Applications

High-Speed Gantry Systems: Drives for large-format CNC machines, laser cutters, and water jet tables. Challenge: High force and precision over long axes.
Automated Welding and Dispensing: High-dynamic actuators requiring precise velocity control over long strokes.
Material Handling & Sorting: Fast, long-stroke movers in logistics and packaging.
Punching and Forming: Actuators requiring very high continuous force for pressing or shaping.

Technical Specifications

Industrial & Commercial Usage

Technical Parameters (Iron Core Linear Motor)

Parameter	Range / Typical Value	Unit
Type	Brushless DC, Iron Core	Design
Continuous Force Density	Highest Density	Rating
Max Velocity	Up to 10	m/s
Cogging Force	Present (Minimized via Control)	Characteristic
Feedback	Linear Encoder (Required)	Type

Additional Information

Supplementary Details & Notes

Production & Customization Services

Manufacturing includes precise coil winding and potting to minimize air gaps. Thermal imaging under load is used to optimize the continuous force rating.

Custom Force Density: Adjusting the coil wire gauge and lamination stack to meet specific continuous or peak force requirements.
Magnet Track Length: Supplying custom-length magnet tracks and end caps for application-specific stroke requirements.
Cooling Options: Offering integrated water-cooling channels in the primary stage for maximum force output in continuous duty cycles.
Integrated Cable Management: Providing complete systems with drag chains and pre-wired linear encoders for plug-and-play installation.

Service & Support

Technical Advantages and Core Design Features

Maximum Continuous Force: The magnetic flux guiding of the iron core maximizes the available thrust force for continuous work.
High Dynamic Response: Capable of extreme acceleration and high top speeds.
No Mechanical Wear: Only relative movement (no balls, screws, or belts), leading to a virtually maintenance-free mechanical system (limited by bearings of the carriage).
High Stiffness: Excellent rigidity and zero backlash compared to screw/belt systems.
Long Stroke Capability: Stroke length is limited only by the ability to connect the magnet track sections.

Frequently Asked Questions

Common Inquiries Regarding Iron Core Linear Motors

Q: What is the main drawback of Iron Core linear motors?
A: Cogging Force. The attraction between the coils and the iron core causes a force ripple during movement. This must be compensated by the high-bandwidth servo drive to ensure smooth motion, which adds complexity.

Q: Why is an external linear encoder required?
A: Unlike a rotary motor where Hall sensors can estimate position, linear motors require a high-resolution linear encoder (glass or magnetic scale) to provide the necessary position and commutation feedback to the servo drive.

Q: How does the Iron Core motor affect carriage mounting?
A: The strong magnetic attraction force between the coil primary and the magnet track must be accounted for in the sizing and stiffness of the carriage bearings (e.g., linear guide rails), which adds to the mechanical design complexity.

Resources

Advanced Material Selection Guide

Magnet Track: High-grade NdFeB magnets encapsulated in stainless steel for corrosion protection and high magnetic retention.

Primary Coils: High-temperature enameled copper wire wound around precisely cut silicon steel laminations for optimal flux path.

Housing: Machined aluminum primary housing designed for maximum surface area and heat rejection to manage the high continuous current.

About Suzhou Retek Electric Technology 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 Brushless DC Linear Motor Iron Core High Force Manufacturers and Wholesale Brushless DC Linear Motor Iron Core High Force 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

Global Export

Suzhou Retek Electric Technology Co., Ltd.

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