R-412 Micro Ball Bearing 1.2mm x 4mm x 1.8mm

R-412 Miniature Open Chrome Steel Ball Bearing
✔️ 1.2mm Bore - 4mm OD - 1.8mm Width - 1.2x4x1.8mm

The R-412 is an ultra-small open-style miniature bearing, precision-made from 52100 chrome steel for durability and smooth performance. Ideal for compact mechanisms, instruments, and micro-motor applications where space is extremely limited.

✅ Inner diameter (bore): 1.2mm
✅ Outer diameter: 4mm
✅ Width: 1.8mm
✅ Material: Chrome steel (AISI 52100)
✅ Closures: Open
✅ Standard: Metric
✅ Quantity: 1 bearing

💡 Why use miniature open bearings?

• Fits ultra-tight spaces in precision devices

• Allows free lubrication for reduced friction

• High-strength steel for long service life

Perfect for delicate assemblies where reliability in a tiny footprint is key.