LMK12UU Square Flange Linear Bearing Pair With 12mm Bore 21mm OD 30mm Length Double Side Rubber Seal Built From Durable Bearing Steel High Load Capacity Smooth Low Friction Motion For CNC Machines 3D Printers And DIY Projects

Square Flange Bearing Pair, 12mm bore, 2-pack
✔️ 12mm bore, 21mm OD, 30mm length, double sealed, 2 pcs

This square flange linear bearing pair comes in a handy 2-pack with a 12 mm bore, 21 mm outer diameter, and 30 mm length. Ideal for CNC machines, 3D printers, and various DIY automation setups that demand precise, low-friction linear motion with solid load bearing.

✅ Bore 12 mm; OD 21 mm; Length 30 mm
✅ Pack of 2 bearings included
✅ Double side rubber seal for dust and moisture protection
✅ Made from durable bearing steel with high load capacity
✅ 4-point contact steel balls provide smooth, low-friction motion

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These bearings keep shafts aligned for smooth, accurate motion. - Handy for CNC machines, 3D printers, and automation rigs - Sealed designs protect against dust and moisture - Long service life with tough steel races