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The most common use for this bearing is as a direct replacement bearing for Shimano external cup BBs with 24mm BB spindles
BKCJ-0302 - 11 tooth
light-contact labyrinth (LLB) seals and 90% fill with Mobil XHP 222 high pressure water proof grease to withstand daily abuse of use and the elements
This radial bearing features 440C stainless steel alloy races and Grade 10 balls with dual-seals and 90% fill with Kluber NBU52 ultra-smooth and sticky
ACB 4545 S8551 BO - 1-3/8 Black-Oxide treated Angular Contact Headset Bearing (36.8x45.8x6.5-45/45) sale The most common use forACB 4545 S8551 BO 1 3 8 Angular Contact Black Oxide treated Headset bearing (36. 8mm x 45. 8mm x 6. 5mm: 45 x 45 deg) Angular contact headset bearing featuring anti corrosion Black Oxide Magnetite treated 52100 High Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide treatment provides an extra level of corrosion resistance and extended worry free performance This size bearing is also known in the bike Industry by these part numbers:
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