F4-9Miniature thrust ball bearings (or axial bearings) are available with bore sizes as small as 2mm. Miniature ball thrust bearings are normally supplied in SAE52100 chrome steel with brass retainers but can also be manufactured in stainless steel (possibly subject to minimum requirements). Small thrust bearings can withstand axial or thrust loads only. There are separate types of miniature thrust axial bearings with either flat washers or washers incorporating a groove or raceway for heavier loads. The grooved type have one washer with a slightly larger bore to allow it to locate in the housing while the other washer has a smaller OD to locate on the shaft.
There are many different designs of miniature thrust bearings which involve different materials, with groove or without grooves as well as imperial size.Contact me directly:email@example.com