LMK12UU Square Flange Linear Ball Bearing Set 12mm Bore 21mm Outer Diameter 30mm Length Sealed On Both Sides High Precision Steel Bushing For CNC DIY Rigs Pack Of 2

LMK12UU Square Flange Bearing Set: 12mm Bore, 21mm OD
✔️ Pack of 2, 12mm bore, 21mm OD, 30mm length, sealed both sides

These square flange linear bearings are built for precise, smooth motion in CNC machines, 3D printers, and other DIY rigs. They mount to guide rails or bars with a square flange for rigid alignment and reliable performance.

Parameter	Value
Bore	12 mm
Outer Diameter	21 mm
Length	30 mm

✅ Bore: 12 mm
✅ Outer diameter: 21 mm
✅ Length: 30 mm
✅ Sealed on both sides for contaminants protection
✅ Pack of 2 for easy stocking and replacements

💡 What is a square flange linear bearing used for?

These handy bearings guide moving parts with low friction and rigid support in compact setups.

- handy for guiding CNC rigs and DIY machines along a straight path - supports precise positioning with a square flange mount for stability - sealed design helps resist dust and debris, boosting life span