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ACB 4545 150 BO - 1-1/2 Black Oxide Angular Contact Headset bearing (40mm x 52mm x 7mm: 45x45 deg)
Weight - 42
it is also the most expensive of the 440 series alloys and requires multiple rounds of heat treatment and cryogenic treatment to achieve its superior mechanical properties
capillary action returns the lubricant back into the polymers micropores where it is stored for future bearing movements
61903 LLU/LLB CN- ABEC-5 Radial Bearing (CN Clearance) - 17mm x 30mm x 7mm sale ACB 4545 150 BO -61903 LLB CN ABEC 5 Radial Bearing (CN clearance) 17mm x 30mm x 7mm A radial bearing generally used as a hub bearing and can be used as a pivot bearing, though the MAX type version of this bearing is better suited for suspension use. This ABEC 5 bearing features deep groove design races, with Grade 10 balls, dual lip, full contact LLU seals facing outwards to withstand daily abuse of use and the elements, and lighter contact LLB seals facing inwards
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