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Linear motion bushing shafts are critical components in many automated systems, providing smooth, low-friction movement. Selecting the appropriate shaft ensures the longevity and precision of your machinery, preventing premature wear and costly downtime. Understanding the key features and specifications will help you make an informed decision for your specific application.
SFC Linear Guide Rail Set: SFC20-1000 mm Linear motion guide rail includes 2 x 39.4 in/1000 mm length SFC20 linear shafts, 4 x SC20 slide blocks and 4 x rail supports. Dynamic Load Per Block: 882 N, Static Load Per Block: 1370 N.
Durable & Long-lasting: The linear rail is made of carbon steel and aluminum with a chrome-plated surface for rust resistance and high durability. Built-in 4 aluminum slide blocks and ball bearings for smooth and unobstructed sliding.
Low Noise Sliding: Aluminum fully sealed SC slide blocks and carbon steel linear shaft are perfectly paired. The built-in ball bearing provides low friction movement and is smooth and not tilted, allowing you to control more labor-saving.
High Precision: Precise circular shaft dimensions and straightness, ensuring high accuracy, repeatability, and stability in its motion. The sturdy aluminum base and slide block have accurate mounting holes, making it easy for users to perform reliable...
Wide Application: The SFC linear rail set is versatile and suitable for all kinds of high-load automation equipment and DIY project, such as router/mill/lathe sleds, 3D printers, laser engravers, CNC machines, trainer rocker plates, etc.
Model: SCS20UU, Inner Diameter: 20mm/ 0.79",(For Linear Bearing Slide Bush: LM20UU) Slide Block Size: 54mm x 50mm x 41mm / 2.13" x 1.97" x 1.61" (L*W*H); Mounted Hole Size: M6.
Dynamic Load Rating (C): 882 N, Static Load Rating (Co): 1370 N.Package:4 x Linear Bearing Sliding Blocks
[Precision Manufacturing]: The high-density aluminum alloy structure makes the slider a strong load-bearing capacity, and surface oxidation treatment, durable and corrosion-resistant.
[High Performance]: Smooth movement, low friction, high rigidity, easy to maintain and replace.
Easy Installation: The Product is Easy to Install and Suitable for Various Mechanical Equipment and Automation Systems.
DOUBLE SEALED DESIGN: The Slide Bearing are double sealed, so as to avoid contaminants entering and save lubricant.
USAGE：Linear bearings are part of linear motion systems, often used in conjunction with cylindrical shafts or guideways
FEATURES: Nickel plating enhances corrosion resistance and durability. These linear bearings with Nickel-Plated surface treatment can operate under corrosive or high-temperature conditions
APPLICATIONS: Mechanical slides, 2-axis and 3-axis tables, linear tables, 3D printers, CNC machines, electronic equipment, food machinery, packaging machinery, etc.
Dimension: 12x500mm(0.47x19.68in) linear rail motion shaft guide set
The linear rail made of good quality steel and aluminum alloy It can move smoothly without deflection minimal wear and low noise
The linear rail kit adopts Appearance oxidation treatment, Glossy Appearance allows bearing block to move quickly with less friction, beautiful and rust-proof.
Package Content: 2Pcs Linear Shaft Optical Axis 12x500mm + 4Pcs Linear Rail Shaft Guide Support + 4Pcs SC12UU Linear Motion Ball Bearing Slide Bushing
Widely used for digital 3D coordinate measuring equipment such as precision equipment or special machinery industry
Model: SCS8UU, Inner Diameter: 8mm/ 0.31",(For Linear Bearing Slide Bush: LM8UU),Slide Block Size: 34mm x 30mm x 22mm / 1.34" x 1.18" x 0.87" (L*W*H); Mounted Hole Size: M4.
Dynamic Load Capacity (Cr): 0.265kN,Static Load Capacity (Cor): 0.402kN,Package:4 x Linear Bearing Sliding Blocks
Precision Manufacturing: The high-density aluminum alloy structure makes the slider a strong load-bearing capacity, and surface oxidation treatment, durable and corrosion-resistant.
High Performance: Smooth movement, low friction, high rigidity, easy to maintain and replace.
Easy Installation: The Product is Easy to Install and Suitable for Various Mechanical Equipment and Automation Systems.
Brand New SW8G Linear Motion 1/2 Inch Ball Linear Bushing, with steel retainer, bearing is high accuracy grade linear bushings. Dimensions:Inner Diameter: 1/2" ,Outer Diameter: 7/8",Width/length: 1-1/4"
Quality Material: The linear bearing is made of bearing steel, which has good abrasion resistance, high precision, and good strength, plated surface treatment can operate under high-temperature conditions.
USAGE：Linear bearings are part of linear motion systems, often used in conjunction with cylindrical shafts or guideways
DOUBLE SEALED DESIGN: The Slide Bearing are double sealed, so as to avoid contaminants entering and save lubricant.
Widely used: linear motion, single axis and 3-axis worktable, linear worktable, 3D printer, CNC machine tool, electronic equipment, food machinery, packaging machinery
Advantages: The slide bearings are crafted from bearing steel, with high hardness, excellent wear resistance, and strong load-bearing capacity to ensure stable performance and long service life in mechanical motion applications. Linear ball bearings...
Instruction: Linear bearings are integral components of linear motion systems, typically paired with cylindrical shafts or guideways to enable smooth, precise linear movement while reducing friction and supporting radial loads.
Application: Linear ball bearings deliver smooth linear motion for mechanical slides, 2-axis/3-axis tables, and linear guides, with broad use in 3D printers, CNC machines, electronic devices, food machinery, and packaging equipment.
Note: Ensure concentricity between the shaft and bearing during installation, avoid overloading or eccentric loading.
Last update on 2026-07-21 / Affiliate links / Images from Amazon Product Advertising API
How to Choose the Best Linear Motion Bushing Shafts
Comparison Factors
When comparing different shafts, look beyond just the stated dimensions. Examine the material specifications, particularly the hardness and the type of steel used. Check for any surface treatments or coatings and their benefits. Review the straightness and roundness tolerances to ensure precision. Consider the reputation of the manufacturer and any available warranty information.
Frequently Asked Questions
What is the primary function of a linear shaft?
The primary function of a linear shaft is to provide a smooth, straight, and hardened running surface for linear bearings. This allows for precise and low-friction movement in automated machinery and other applications.
How does shaft diameter affect performance?
Shaft diameter is a critical factor in determining the load-carrying capacity of the linear motion system. Larger diameters generally support higher loads. It also dictates the size and type of linear bearings that can be used with the shaft.
What does 'straightness tolerance' mean for a shaft?
Straightness tolerance refers to the maximum allowable deviation from a perfectly straight line along the length of the shaft. A tighter tolerance indicates a straighter shaft, which is crucial for smooth operation and preventing binding.
Is chrome plating beneficial for linear shafts?
Yes, chrome plating is often beneficial as it enhances corrosion resistance and provides a harder, smoother surface. This can improve wear resistance and reduce friction, leading to longer component life.
How important is the hardness of the shaft material?
Shaft hardness, typically measured on the Rockwell scale, is very important as it indicates the material's resistance to indentation, wear, and deformation. A sufficiently hard shaft is essential for durability, especially under load.
Can I use any linear bearing with any shaft?
No, you cannot use any linear bearing with any shaft. Linear bearings are designed to fit specific shaft diameters and types. Always ensure compatibility between the shaft and the bearing for optimal performance and to prevent damage.
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