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Linear shaft manufacturers & suppliers

Durch mehr als 23 Jahre Entwicklung verfügt BOS Hydraulic jetzt über 3 Fabriken, 1 Forschungszentrum und 1 Vertriebszentrum. Mehr als 100 Kunden aus 40 Ländern und Regionen haben langfristige Geschäftsbeziehungen mit uns aufgebaut. Die Produkte sind von nationalen und internationalen Behörden zertifiziert.
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Linearwellenstange

A Linear Shaft Rod is a precision-ground cylindrical component that provides guided linear motion in machinery. Typically made from hardened steel or stainless steel with a hard chrome-plated finish, it offers high rigidity, excellent wear resistance, and corrosion protection. Its superior straightness and smooth surface ensure minimal friction and reliable performance in automation systems, bearing guides, and support applications.

Linear Shaft Rod Series

Advantages of Linear Shaft Rod

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Leading technical expertise
Exquisite craftsmanship guarantees the long-lasting and stable quality of products
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Strict quality management system
BOS promise to manufacture and deliver strictly according to the drawing specifications
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Complete customization capabilities
BOS provides a full range of customized services
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Technical Support
Professional engineers with more than 20 years of experience always serving you.

Bos Linear Shaft Rod first choice

With years of experience in manufacturing linear shafts, we provide customer satisfaction through manufacturing and customization.

At Bos, we care about you and your company. We specialize in the customization, material selection, and manufacturing of linear shafts, and provide excellent services according to your needs.

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Precision Linear Shaft Rods:
Fundamentals of Systems

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A Linear Shaft Rod is a precision-ground cylindrical rod designed to guide and support moving elements in a linear motion system. Acting as the raceway for linear ball bushings or plain bearings, it ensures that components move along a straight path with minimal deviation and friction. Our rods are meticulously manufactured from high-grade materials, including high-carbon chromium steel equivalent to SUJ2 and various stainless steels, selected for their superior mechanical properties . The production process involves precision cold-drawing, followed by heat treatment such as induction hardening to achieve a surface hardness of 58HRC and above, and finished with precision grinding to attain tolerances of g6 or h5 .
The versatility and robustness of our Linear Shaft Rods make them indispensable in a vast array of sectors where precise linear motion is non-negotiable. In the field of industrial automation, they are the guiding force in CNC machining centers, robotic arms, pick-and-place systems, and automated assembly lines. The 3D printing and additive manufacturing industry relies on our precision-ground rods to ensure the accurate and repeatable movement of print heads and build platforms, which is fundamental to achieving high-quality prints . Furthermore, they are critical components in packaging machinery, medical devices, laser cutting equipment, and precision measuring instruments.
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Key Advantages and Features

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Choosing our Linear Shaft Rods translates directly into enhanced machine performance and reduced total cost of ownership. The primary advantage is their exceptional wear resistance and longevity, achieved through induction hardening and hard chrome plating. This creates a extremely durable surface that withstands constant friction from bearings, significantly extending the service interval . Secondly, our rods offer superior dimensional accuracy and geometric precision. With tight diameter tolerances (e.g., ISOf7, g6), excellent straightness (e.g., ≤ 0.2/1000), and controlled roundness, they ensure smooth, stick-slip-free motion, minimal vibration, and high positional accuracy, which is crucial for precision manufacturing .

The high-strength core material provides excellent load-bearing capacity and resistance to bending, ensuring stable performance even under significant radial loads. Additionally, the mirror-like surface finish not only reduces friction and wear but also protects against corrosion, enhancing the rod's suitability for use in clean rooms or environments with moderate levels of humidity and contaminants . For applications requiring lightweight components or internal routing of wires and cables, our hollow Linear Shaft Rod variants offer a perfect solution without a substantial compromise on strength.

Why Partner with Us?

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Selecting us as your Linear Shaft Rod supplier means entering a partnership grounded in technical expertise and a commitment to quality. Our vertical integration and in-house manufacturing control allow us to maintain consistent quality from raw material to finished product. We offer an unparalleled level of customization, providing rods in a wide range of diameters, from 6mm to 500mm, and lengths up to 16 meters, with various end-stage machining options such as external threading, internal threading, and wrench flats to meet your specific assembly requirements . Our technical team possesses deep knowledge of material science and tribology, enabling us to provide expert guidance on selecting the optimal rod specification—be it a standard chrome-plated rod, a stainless steel version for enhanced corrosion resistance, or a hollow design for weight reduction. We are more than a component supplier; we are a solutions provider dedicated to optimizing your design.

Details and Applications of Linear Shaft

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Linear Shaft Rod is used as a motion platform for laser measurement equipment and semiconductor wafer inspection equipment.

Linear Shaft Rod China's Best Manufacturer

Bos Hydraulic, with its leading technical expertise, strict quality management system, continuous R&D investment, and efficient service team, has won wide recognition and trust from domestic and foreign markets, becoming an outstanding brand in the Linear Shaft Rod industry
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Bos Linear Shaft Rod Manufacturers

Linear Shaft Rod – The Ultimate FAQ Guide

A Linear Shaft Rod is a precision-ground component that provides guided linear motion in machinery. Typically made from hardened steel or stainless steel with a hard chrome-plated finish, it offers high rigidity, excellent wear resistance, and corrosion protection. Its superior straightness and smooth surface ensure minimal friction and reliable performance in automation systems, bearing guides, and support applications.
What materials are commonly used for Linear Shaft Rods?

The most common materials are high-carbon chromium steel (like SUJ2/52100), which is hardened and chrome-plated for optimal wear resistance. For corrosive environments, stainless steel (such as SUS304 or 440C) is used, offering excellent corrosion resistance though with generally lower hardness than hardened steel.


Why is surface hardness important for a Linear Shaft Rod?

High surface hardness (e.g., 58-65 HRC) is crucial for resisting abrasion from linear bushings. A hard surface minimizes wear, prevents galling, and significantly extends the service life of both the rod and the mating bearing, ensuring long-term precision.

How do I interpret tolerance grades like g6 or h6?

These are international tolerance grades for shafts. A grade like g6 indicates a sliding fit, perfect for applications requiring precise movement with minimal play. h6 is a precision location fit, offering very tight tolerances for high-accuracy systems. The choice depends on your required balance of freedom of movement and positional accuracy.


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