10Pcs U624ZZ U Groove Ball Bearing Guide Pulley For Rail Track Linear Motion System 4X13X7mm Mounted Bearing

These bearings are made from high quality carbon steel for durability and long service life. They are double shielded to avoid contaminants entering and save lubricant. Bearings have 1.8mm deep U groove that generally ride on a rail or track. 10Pcs U624ZZ U Groove Ball Bearing Guide Pulley For Rail Track Linear Motion System 4X13X7mm Mounted Bearing. Features: These bearings are made from high quality carbon steel for durability and long service life. They are double shielded to avoid contaminants entering and save lubricant. Bearings have 1.8mm deep U groove that generally ride on a rail or track. These are for specialized bearings that are used in many linear motion systems. There comes total 10 pieces bearings which you may use for many different projects. Specifications: Material: High Carbon steel. Model: U624ZZ. Inner Diameter: 4mm/0.16". Outer Diameter: 13mm/0.51". Height: 7mm 0.27". U Groove Width: 5.2mm/0.2". U Groove Depth: 1.8mm/0.07". Quantity: 10 Pcs/1 Set. Note: Please al