Enduro ACB 3645 3748 BO - 1 3/8 Black Oxide Coated Angular Contact Headset Bearing

ACB 3645 3748 BO - 1-3/8 Black Oxide Coated Angular Contact Headset Bearing

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ACB 3645 3748 BO - 1-3/8" Angular Contact Headset Bearing (37mm x 48mm x 6.5mm: 36 45deg).

Angular-contact headset bearing featuring anti-corrosion Black Oxide/Magnetite coated 52100 High-Carbon Chromium alloy races paired with grade 10 Balls. Black Oxide coating provides an extra level of corrosion resistance and extended worry-free performance.

This size bearing is also known in the bike Industry by part number Ai-70

The Enduro line of angular-contact headset bearings start with Black Oxide treated Chromium steel races, steps up to full 440C stainless steel, and the top of the line, lifetime-guaranteed, XD-15 aerospace-stainless (races and balls). They are always engineered with the largest balls possible, feature dual-lip seals riding in a micro-groove (labyrinth) and are filled 90% with high pressure water proof grease for the ultimate protection against sweat and the elements. Enduro Angular Contact (A/C) bearings are designed so all balls are evenly engaged to spread the force over a larger surface area, decreasing friction, minimizing wear and maximizing life.

Static load - 935lbf / 4.15kN
Weight - 25.25g

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