Linear Ball Bearing Slide Block SCS8UU–SCS20UU CNC Router

Aluminium Linear Ball Bearing Slide Block Units – SCS Series

Upgrade your CNC router, 3D printer, or precision motion system with these high-quality SCS Series Linear Ball Bearing Slide Bushing Blocks. Featuring a lightweight aluminium alloy housing paired with chromium steel bearing balls, these units deliver smooth, low-friction linear motion with outstanding rigidity and a long service life. Available in a full range of sizes — SCS6UU, SCS8UU, SCS10UU, SCS12UU, SCS16UU, and SCS20UU — to suit your specific shaft diameter requirements.

Key Features

• Lightweight Aluminium Alloy Housing — Reduces overall machine weight without sacrificing strength or rigidity.
• Chromium Steel Bearing Balls — Excellent abrasion resistance, high precision, and durable performance under continuous use.
• Smooth, Low-Friction Movement — Ensures consistent, accurate linear travel for CNC and 3D printing applications.
• High Rigidity & Long Working Life — Built to maintain precision alignment over extended operation cycles.
• Wide Compatibility — Suitable for guide rails, shaft rods, electronic equipment linear guides, and pillar-type motion systems.
• Multiple Size Options — SCS6UU, SCS8UU, SCS10UU, SCS12UU, SCS16UU, SCS20UU to match various shaft diameters.

Specifications

• Material: Aluminium Alloy housing with Chromium Steel bearing balls
• Available Models: SCS6UU / SCS8UU / SCS10UU / SCS12UU / SCS16UU / SCS20UU
• Compatible Applications: CNC routers, 3D printers, linear motion guides, shaft rod assemblies
• Country of Origin: Made in China

Package Contents

• 1× Linear Ball Bearing Slide Block Unit (model of your choice)

Note: Monitor calibration may cause slight colour variation from images shown. Please allow a minor measurement tolerance of ±1–2 mm. 1 cm = 0.39 inches.

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Frequently Asked Questions

Q: What shaft diameter sizes are compatible with these linear ball bearing slide blocks?

A: The SCS series covers a range of shaft diameters — SCS6UU fits 6 mm shafts, SCS8UU fits 8 mm, SCS10UU fits 10 mm, SCS12UU fits 12 mm, SCS16UU fits 16 mm, and SCS20UU fits 20 mm round guide shafts. Always match the model number to your shaft diameter for the best fit and performance.

Q: Are these linear ball bearing blocks suitable for 3D printers and CNC routers?

A: Yes. The SCS series aluminium slide bushing blocks are designed specifically for use in CNC routers, 3D printers, and similar precision motion applications where smooth, accurate linear travel along a guide rail or shaft rod is required.

Q: Why choose an aluminium housing over a steel housing for a linear bearing block?

A: An aluminium alloy housing significantly reduces the weight of the moving assembly, which is important in high-speed CNC and 3D printing setups. Despite being lightweight, the housing maintains good structural strength, while the chromium steel bearing balls inside provide the hardness and abrasion resistance needed for long-term, high-precision operation.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.