Four Pack 20Mm Aluminum Open Linear Bearings For SBR20 Rails With 20Mm Bore 39Mm Outer Diameter And 11Mm Thick Ultra Smooth Low Noise CNC Slide Bushing Blocks For DIY 3D Printer And Engraving Machine
✔️ 4 bearings, 20mm bore, 39mm OD, 11mm thick, open blocks
These open aluminum linear bearings are designed to ride on 20mm shafts (SBR20) and are ideal for DIY 3D printers, engraving machines, and small CNC rigs. They combine lightweight aluminum blocks with smooth, low-noise motion for precise linear guidance.
✅ 4-pack set for multiple projects
✅ 20mm bore fits 20mm shafts/rods
✅ 39mm OD and 11mm thick for compact fit
✅ Aluminum alloy for low noise and long life
✅ Open-block design supports high speed and precision
💡 What is a pillow block bearing used for in CNC and 3D printer setups?
This handy housing guides 20mm shafts for smooth motion.
- High-precision shaft alignment for reliable linear motion
- Lightweight aluminum construction reduces weight and noise
- Easy swap-in on DIY printers and engraving machines