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The SBR Linear Guide Rail Series (SBR10 to SBR25) provides a highly stable, supported optical axis system for precision linear motion. Featuring rigid carbon steel shafts mated with aluminum alloy supports, these rails pair perfectly with our SBR...UU (e.g., SBR20UU) sliding bearing blocks to deliver smooth, low-friction, and deflection-free movement. Ideal for CNC routers, 3D printers, and automated machinery, we supply B2B customers with customizable rail lengths, bulk block quantities, and fast order fulfillment.
The SBR Series Linear Guiding System is an industrial-grade motion control solution that combines a main cylindrical rail with an aluminum alloy base support. This continuous support eliminates the shaft deflection (bending) typically seen in unsupported rod systems, allowing for heavier loads and much longer travel lengths. The rails are used cooperatively with SBR...UU sliding blocks, which house high-precision linear ball bearings to ensure smooth and fast transmission.
We supply the full range of SBR series (SBR10, SBR12, SBR16, SBR20, and SBR25). Below are the standard specifications for the popular SBR20 model:
Item | Specification |
Model System | SBR20 Rail + SBR20UU Block |
Shaft Diameter | 20 mm |
Rail Material | 45# Carbon Steel (Optical Axis) + Aluminum Support Bracket |
Surface Treatment | Chrome-plated, polished finish (Anti-rust) |
Shaft Hardness | HRC 58-60 Degrees (for wear resistance) |
Block Material (SBR20UU) | Aluminum Alloy Housing + GCr15 Bearing Steel |
Block Thread Size | Requires M6 mounting bolts |
Custom Lengths | Available from 250 mm up to 4000 mm upon request |
The SBR linear motion kit is engineered for both DIY enthusiasts and professional machine builders requiring tight tolerances:
Heavy-Duty Stability: The solid bearing-steel central axle, combined with the aluminum base, provides immense rigidity, easily handling heavy loads without bending even under high pressure.
Smooth & Precise Motion: The optical axis features a g6 level accuracy and a highly polished surface. This reduces friction when the SBR20UU blocks slide, ensuring high-speed operation with minimal noise.
Adjustable Clearance: SBR...UU blocks feature an adjustable side bolt (adjuster), allowing you to fine-tune the tension and clearance between the bearing and the rail for absolute precision.
Because of its cost-effectiveness and high rigidity, the supported linear rail design is heavily utilized in automated mechanical facilities:
CNC routers, engraving machines, and CNC lathes.
Industrial 3D printers and laser cutters.
Packaging machinery and automated assembly lines.
Woodworking and metalworking tools.
We cater to machinery manufacturers and aftermarket parts distributors globally. We can supply complete sets (e.g., 2 Rails + 4 Blocks) or individual components based on your assembly line needs.
Customization: Rails can be precisely cut to your required lengths.
Packaging: Securely packed in industrial cartons or wooden crates to prevent bending or damage to the optical axis during heavy freight shipping.
Q1: How do I choose between SBR16, SBR20, and SBR25?
A: The number refers to the diameter of the cylindrical shaft in millimeters (e.g., SBR20 is 20 mm). Thicker shafts (SBR20/SBR25) provide higher load capacities and greater rigidity for heavy-duty CNC machines, while smaller shafts (SBR12/SBR16) are lighter and suited for smaller automation projects.
Q2: What is included inside the SBR20UU block?
A: The block consists of a rugged aluminum outer housing that holds an LM20UU-OP (Open Type) linear ball bearing made of heat-treated GCr15 chromium steel.
Q3: Can the rails be joined together to make a longer track?
A: Yes. If you require a length longer than our maximum single-piece extrusion, the rails can be precision-cut and butted end-to-end to create a continuous track.
Q4: Do you sell the SBR20UU blocks separately from the rails?
A: Yes, we supply the rails and blocks both as bundled kits and as separate individual components for your replacement inventory needs.
The SBR Series Linear Guiding System is an industrial-grade motion control solution that combines a main cylindrical rail with an aluminum alloy base support. This continuous support eliminates the shaft deflection (bending) typically seen in unsupported rod systems, allowing for heavier loads and much longer travel lengths. The rails are used cooperatively with SBR...UU sliding blocks, which house high-precision linear ball bearings to ensure smooth and fast transmission.
We supply the full range of SBR series (SBR10, SBR12, SBR16, SBR20, and SBR25). Below are the standard specifications for the popular SBR20 model:
Item | Specification |
Model System | SBR20 Rail + SBR20UU Block |
Shaft Diameter | 20 mm |
Rail Material | 45# Carbon Steel (Optical Axis) + Aluminum Support Bracket |
Surface Treatment | Chrome-plated, polished finish (Anti-rust) |
Shaft Hardness | HRC 58-60 Degrees (for wear resistance) |
Block Material (SBR20UU) | Aluminum Alloy Housing + GCr15 Bearing Steel |
Block Thread Size | Requires M6 mounting bolts |
Custom Lengths | Available from 250 mm up to 4000 mm upon request |
The SBR linear motion kit is engineered for both DIY enthusiasts and professional machine builders requiring tight tolerances:
Heavy-Duty Stability: The solid bearing-steel central axle, combined with the aluminum base, provides immense rigidity, easily handling heavy loads without bending even under high pressure.
Smooth & Precise Motion: The optical axis features a g6 level accuracy and a highly polished surface. This reduces friction when the SBR20UU blocks slide, ensuring high-speed operation with minimal noise.
Adjustable Clearance: SBR...UU blocks feature an adjustable side bolt (adjuster), allowing you to fine-tune the tension and clearance between the bearing and the rail for absolute precision.
Because of its cost-effectiveness and high rigidity, the supported linear rail design is heavily utilized in automated mechanical facilities:
CNC routers, engraving machines, and CNC lathes.
Industrial 3D printers and laser cutters.
Packaging machinery and automated assembly lines.
Woodworking and metalworking tools.
We cater to machinery manufacturers and aftermarket parts distributors globally. We can supply complete sets (e.g., 2 Rails + 4 Blocks) or individual components based on your assembly line needs.
Customization: Rails can be precisely cut to your required lengths.
Packaging: Securely packed in industrial cartons or wooden crates to prevent bending or damage to the optical axis during heavy freight shipping.
Q1: How do I choose between SBR16, SBR20, and SBR25?
A: The number refers to the diameter of the cylindrical shaft in millimeters (e.g., SBR20 is 20 mm). Thicker shafts (SBR20/SBR25) provide higher load capacities and greater rigidity for heavy-duty CNC machines, while smaller shafts (SBR12/SBR16) are lighter and suited for smaller automation projects.
Q2: What is included inside the SBR20UU block?
A: The block consists of a rugged aluminum outer housing that holds an LM20UU-OP (Open Type) linear ball bearing made of heat-treated GCr15 chromium steel.
Q3: Can the rails be joined together to make a longer track?
A: Yes. If you require a length longer than our maximum single-piece extrusion, the rails can be precision-cut and butted end-to-end to create a continuous track.
Q4: Do you sell the SBR20UU blocks separately from the rails?
A: Yes, we supply the rails and blocks both as bundled kits and as separate individual components for your replacement inventory needs.
