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THK Linear Guides

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Heavy Duty Ball Linear Guideway is a four-row, single arc 45° tooth contact type linear guide. It features equal load in all directions and automatic self-aligning functions, which can absorb installation surface assembly errors, achieving high precision. The concepts of high speed, high load capacity, high rigidity, and high precision have become trends in the development of industrial products.

THK Low Profile Ball Type Linear Guideway

Low Profile Ball Type Linear Guideway adopts a four-row ball design to withstand loads, providing high rigidity and high load-bearing capacity. It features equal load capacity in four directions and a self-aligning function, which helps absorb assembly errors on the mounting surface, ensuring high precision. With a reduced overall height design, it effectively minimizes the installation height of equipment compared to traditional guide rails, making it suitable for applications with space constraints.

THK Silent Heavy Load Ball Type Linear Guideway

Silent Heavy Load Ball Type Linear Guideway still adopts a four-row single arc groove contact design. To further enhance its competitive advantage, the QH Series linear guide is equipped with a silent chain belt for each row of steel balls, preventing friction between the steel balls. This effectively reduces noise during operation and improves stability and smoothness. It is particularly suitable for high-speed, silent, and low-dust applications in high-tech industries.

THK Silent Low Assembly Ball Type Linear Guideway

Silent Low Assembly Ball Type Linear Guideway still adopts a four-row single arc groove contact design. To further enhance its competitive advantage, the QE,SSR Series linear guide is equipped with a silent chain belt for each row of steel balls, preventing friction between the steel balls. This effectively reduces noise during operation and improves stability and smoothness. It is particularly suitable for high-speed, silent, and low-dust applications in high-tech industries.

THK Roller Type Linear Guideway

Roller Type Linear Guideway uses rollers as rolling elements instead of conventional steel balls. The rolling elements are in line contact with the block and rail, providing higher rigidity and load capacity under the same specifications. Designed with a 45-degree contact angle, it offers equal load capacity in four directions. Each row of rollers is equipped with a silent chain to prevent mutual friction between rollers, effectively reducing the noise of the guideway system. This also ensures smoother transitions when rollers enter and exit the load and non-load zones, significantly enhancing operational stability and smoothness. It is particularly suitable for equipment requiring high silence, high rigidity, high load capacity, and high precision.

THK Miniature Linear Guideway

Miniature Linear Guideway adopts a two-row design with a 45-degree contact angle, providing features such as miniaturization, lightweight, and low friction resistance. It offers equal load capacity in all four directions, ensuring smooth motion with low noise. The wide rail design enhances rigidity and increases load capacity, especially in terms of lateral torque resistance. Made of stainless steel, the MG,SRS series guideways offer excellent corrosion resistance, making them suitable for various special environments.

THK Wide Type Ball Linear Guideway

Wide Type Ball Linear Guideway adopts a four-row ball design with a 45-degree contact angle, providing equal load capacity in all four directions. It features a self-aligning function that compensates for assembly errors on the mounting surface, meeting high-precision requirements. Its unique wide-rail structure ensures ultra-high torsional resistance under lateral moment loads, making it suitable for applications requiring high stability and rigidity.

What Is a Linear Guide?

A linear motion guide, also called a linear guideway, is a precision mechanical component that enables smooth, accurate linear motion by recirculating rolling elements between a hardened rail and a moving carriage (block). This linear guide rail system reduces friction to approximately 1/50th of traditional sliding systems, supporting multi-directional loads with exceptional positioning accuracy. It is the ideal solution for high-performance automation and motion control applications.

Basic Components of Linear Guides

A linear guide system is a system of two main parts that work together:

Linear Rail: The long, stationary track made of hardened steel. It is precisely ground to form smooth raceways.
The Block (or Carriage): The component that moves along the rail. It attaches to your machine and carries the load.

Inside the block, three key elements enable smooth movement:

Rolling Elements: Balls or rollers that reduce friction by rolling between the block and rail.
Recirculation Path: A built-in channel that allows the balls or rollers to cycle continuously through the block, enabling unlimited travel.
Seals: Covers that protect the internal parts from dust and dirt while keeping lubricant in.

Advantages of Linear Guides

Zero Clearance & Smooth Motion: Pre-loaded rolling elements eliminate backlash and provide exceptionally smooth movement with minimal friction.
Unlimited Linear Motion: Linear guides and rails provide infinite stroke. This is achieved through an endless recirculating ball mechanism. The only limit to the travel length is the length of the rail itself.
High Load Capacity: A patented raceway design creates optimized surface contact, supporting loads up to 13 times greater than point-contact alternatives.
High Rigidity & Accuracy: Precision-ground components ensure exceptional stability, minimal deflection, and micron-level positioning repeatability.
Long Service Life & Low Maintenance: Hardened steel construction and efficient rolling motion reduce wear, ensuring long-term reliability with minimal upkeep.

Linear Guide Types

With an extensive selection of linear motion guide series, LILY Bearing offers solutions for diverse requirements in dimension, load capacity, and precision. Browse our series to find your match:

HG Series: Standard precision ball linear guides featuring a 4-row circular arc groove design. Offer balanced performance with high accuracy, smooth motion, and reliable load capacity for general industrial applications.
EG Series: Low-profile linear guides providing compact dimensions without compromising performance. Ideal for space-constrained applications requiring high rigidity and stability in limited installation spaces.
QH Series: High-speed linear guides engineered for rapid positioning applications. Feature optimized recirculation systems for reduced noise and vibration during high-acceleration operation.
QE Series: Ultra-precision linear guides designed for applications demanding exceptional accuracy and smooth motion characteristics. Achieve minimal running parallelism errors and superior positioning repeatability.
RG Series: Roller-based linear guides utilizing cylindrical rollers instead of balls. Deliver significantly higher load capacity and rigidity, making them suitable for heavy-duty applications and high moment load conditions.
MG Series: Miniature linear guides offering compact dimensions while maintaining precision performance. Perfect for medical devices, small automation systems, and applications with strict space limitations.
WE Series: Wide-type linear guides with enlarged slider design for enhanced moment load capacity and improved stability. Optimal for applications requiring higher overturning moment resistance.
QW Series: The linear guideway series possesses high moment rigidity and is well-suited for single-rail or space-saving applications. It ensures exceptionally quiet and smooth movement, offers superior lubrication performance, and delivers an extended service life.
CG Series: Moment-resistant linear guides featuring optimized bearing circulation design. Offer up to 50% higher moment load capacity compared to standard designs for challenging force scenarios.

Applications of Linear Guides

Linear guides are fundamental components in a vast range of industries, including:

Machine Tools: Providing critical guidance for spindles and tables in CNC machining centers, lathes, and grinders.
Semiconductor Manufacturing: Enabling micron-level precision in wafer handling, photolithography, and inspection equipment.
Industrial Robotics: Facilitating precise, high-speed movement in robotic joints and arms for welding, assembly, and material handling.
Medical Equipment: Ensuring smooth and reliable motion in CT scanners, MRI machines, and surgical robotics.
Automation & Packaging Machinery: Offering high-speed, accurate linear motion for pick-and-place systems, assembly lines, and packaging operations. Our reliable linear bearings and rails solutions ensure maximum uptime.