4 Pack SCS8UU Linear Ball Bearings 8mm ID By 30mm Length Aluminum Slide Block With Double Seal For 3D Printers And CNC Machines Smooth Glide High Hardness Bearing Steel Durable Linear Motion Bearings
✔️ 8 mm ID, 30 mm length; aluminum shell, double seal
These 4-pack SCS8UU linear ball bearings deliver precise linear motion on shafts in CNC machines, 3D printers, and automated equipment. They use an 8 mm bore and 30 mm length with a four-row ball design to minimize friction and provide smooth, repeatable movement. The aluminum alloy shell is sandblasted and oxidized for a clean, corrosion-resistant finish, combining light weight with durability. The double-seal design helps keep lubricant in and contaminants out, making them suitable for dusty or humid environments.
✅ ID 8 mm, 30 mm length, 34 mm width, 22 mm height, install aperture 4 mm
✅ Material: bearing steel inner race, high-hardness surface; aluminum shell for light weight
✅ Four-rows steel balls make point contact for precise glide
✅ Double-seal design blocks dust and moisture to extend life
| Dimension | MM | Inches |
|---|---|---|
| ID bore | 8 | 0.315 |
| Total length | 30 | 1.181 |
| Width | 34 | 1.339 |
| Height | 22 | 0.866 |
| Installation aperture | 4 | 0.157 |
💡 What is a linear ball bearing used for in motion control systems?
This handy component reduces friction and guides precise motion in a wide range of automated setups.
- Low-friction guidance for CNCs, 3D printers, and automated equipment
- Supports smooth, straight-line travel with repeatable positioning
- Double-seal design protects lubricant and blocks contaminants