Precision Linear Shaft
Key Features
The product undergoes strict control of straightness during the manufacturing process, typically achieving an error of 0.05mm/m or better.
High Dimensional Accuracy
The diameter tolerance is usually within ±0.003mm or smaller, providing a perfect fit with high-precision sliding components such as linear bearings, minimizing gaps and errors.
Low Friction Coefficient
The surface is finely polished, with roughness typically below 0.4μm, reducing sliding friction and improving motion efficiency.
Wear Resistance and Long Lifespan
The shafts are hardened through quenching or induction heat treatment, achieving a surface hardness of HRC58-64, significantly enhancing durability and making them suitable for long-term, high-frequency use.
Material Versatility
Carbon steel: Cost-effective and suitable for general industrial use.
Stainless steel (e.g., SUS304, SUS440C): High corrosion resistance, ideal for humid or chemical environments.
Tungsten steel or titanium alloy: Used in high-load or high-precision applications.
Key Technical Features：
| Feature | Specification | Application Benefit |
| Straightness | ≤0.05mm/m | Minimal runout in high-speed linear motion systems |
| Diameter Tolerance | ±0.003mm (ISO 2768-ultra) | Perfect fit with linear bearings (clearance ≤0.01mm) |
| Surface Roughness | Ra ≤0.4μm | Friction coefficient reduced to 0.15 or lower |
| Surface Hardness | 58-64 HRC (post-heat treatment) | 50%+ longer service life than standard shafts |
| Load Capacity | Up to 500N radial (depending on diameter) | Supports heavy-duty automation and robotics applications |
Application Scenarios
Widely used across industries, including manufacturing, automation equipment, and medical instruments.
1.Used in production lines, conveyor systems, and inspection equipment to provide smooth and efficient linear motion.
2.serve as guide rails in sliding tables and motion control systems.
Optical and Measuring Instruments
● Optical Instruments: Used in microscopes and cameras for lens adjustment mechanisms, ensuring smooth movement and precise focusing.
● Measuring Devices: Incorporated into height gauges, laser measuring instruments, and other precision equipment to ensure accuracy.
Electronics and Semiconductor Manufacturing
● Widely used in chip manufacturing equipment to support wafer transfer and alignment systems, requiring high precision and low-friction motion.
Packaging and Logistics Equipment
● Provides accurate linear support in packaging machines, improving operational efficiency and product quality.
● Used as rolling supports in conveyor belts, reducing energy consumption.
Other Fields
● 3D Printing Equipment: Serves as a guide rail system for printer heads, ensuring high-precision printing.
● Aerospace and Military: Supports applications requiring high precision and stability.
Classification
By Material
● Carbon Steel Shafts: Affordable and suitable for general industrial environments.
● Stainless Steel Shafts: Highly corrosion-resistant, ideal for humid or chemically corrosive conditions.
● Chrome-Plated Shafts: Enhanced corrosion and wear resistance through surface chrome plating.
● Hollow Shafts: Lightweight, suitable for weight-sensitive applications.
By Processing Method
● Hardened Shafts: Surface hardened for high durability and wear resistance.
● Non-Hardened Shafts: Suitable for low-load environments, offering cost savings.
By Usage
●Guide Shafts: Used for guiding sliding components.
●Drive Shafts: Used for transmitting power and controlling motion.
Key Parameters for Selecting
1.Diameter: Common sizes range from Ø3mm to Ø50mm. Specific dimensions depend on equipment requirements.
2.Length: Determined by installation space and required stroke length; customizable as needed.
3.Tolerance: Typically within ±0.003mm, ensuring a perfect fit with linear bearings.
4.Surface Treatment: Options such as chrome plating, stainless steel, or oxidation treatment for different environmental needs.
5.Load Capacity: Choose materials and hardness according to the application's load requirements.
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