Enduro 61903 LLU/LLB Radial Cartridge Bearing - ABEC-5, CN Clearance, 17mm x 30mm x 7mm EA Cartridge Bearing

ABEC-5 radial bearing is designed specifically for bicycle applications 52100 High-Carbon Chromium alloy deep-groove design races help to promote a longer bearing life Precise long-lasting Grade 10 Balls are made from 52100 Chromium Steel 90% fill with Mobil XHP 222 high pressure water proof grease LLU seal facing outward, towards the elements, to reduce contamination from water or dirt Lighter-contact (less seal-drag) LLB seal facing inward keep the grease where it belongs CN clearance specification is best for looser press-fit bearing bores