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 specialized bearings that are used in many linear motion systems.
There comes total 10 pieces bearings which you may use for many different projects.
Material: Carbon steel
Inner Diameter: 4mm / 0.15'
Outer Diameter: 13mm / 0.51'
Height: 7mm / 0.27'
U Groove Width: 5.2mm / 0.2'
U Groove Depth: 1.8mm / 0.07'
10 x Bearings