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Home / Bearings & Bushings / Aluminum Support Shaft Rail Kit SBR Cylindrical Linear Guide 45# Steel Chrome-Plated Hard Shaft Open Slide Bearing

Attributes

Brand -
Category Industrial Small Parts / Bearings & Bushings
Origin -
Shaft Material 45# Carbon Steel
Rail Support Material Aluminum Alloy
Surface Treatment Hard Chrome Plating
Shaft Diameter 8mm, 12mm, 16mm, 20mm Options
Standard Length 100mm to 1000mm
Bearing Type Open-Style Linear Ball Bearing
Shaft Hardness HRC 55-60
Precision Class GCR15 Standard
Primary Application CNC Machines, 3D Printers, Automation
Package Weight Varies by Configuration

5 reviews

A

Anonymous

Apr 17, 2026

Rating: 5/5

Smooth operation

Very happy with the motion quality. No binding or sticking. Arrived faster than expected.

A

Anonymous

Apr 16, 2026

Rating: 5/5

Perfect fit

Exactly what I needed for my router upgrade. The chrome plating looks durable and the motion is very smooth.

A

Anonymous

Mar 22, 2026

Rating: 4/5

Good value

Overall satisfied with the quality. One bearing was tight initially but loosened up after some use. Good price point.

A

Anonymous

Mar 07, 2026

Rating: 5/5

Great for CNC build

Shafts are straight and smooth. The aluminum supports made mounting very easy. Highly recommend for hobbyist CNC projects.

A

Anonymous

Feb 26, 2026

Rating: 3/5

Okay quality

The rails work fine but the packaging could be better to prevent minor scratches during shipping. Functionality is not affected.

5 FAQ

Q: Do I need to lubricate the rails upon arrival?

A: The shafts come with a protective oil coating. We recommend applying linear bearing grease for optimal long-term performance.

Q: What is the maximum load capacity for the 12mm shaft?

A: Load capacity depends on the length and mounting distance. For dynamic loads, please refer to the engineering specification sheet.

Q: Is there a warranty included with this kit?

A: Yes, all kits come with a standard 1-year warranty against manufacturing defects. Please keep your order number for claims.

Q: Can you cut the shafts to custom lengths?

A: Yes, we offer custom cutting services. Please contact our support team before placing your order for specific requirements.

Q: What size mounting screws are required for the supports?

A: Most aluminum supports use M3 or M4 screws depending on the rail diameter. Please check the specific product drawing for details.

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