Enduro Bearings ACB 4545 150 BO - ABEC 5 - Black Oxide (Angular Contact) - 40x52x7 (45x45°)

We do not suggest bearings for low-end headsets. Instead, we start with chrome steel, Black Oxide A/C, and finally, 440C stainless steel bearings. They are always built with the largest possible balls and their double-lip seals are seated in a small recess for ultimate protection against sweat and the elements. They are 90% filled with high-pressure grease, so you don't have to wonder if there's grease inside. BLACK OXIDE: Enduro bearings use races made of 52100 chrome alloy and high-carbon steel, which have undergone thermal and cryogenic treatment. This means that everything is brought to a temperature of –190°, which provides a certain hardness and thus reduces ball wear. We then give the bearing a magnetic treatment (black or Black Oxide color) which provides protection against corrosion and also allows for easy assembly. The races are further polished after treatment to ensure the smoothest possible surface. These are the best bearings for the rear suspension.

Article number ACB4545150BO EAN 810191010050 Brands Enduro Bearing height (mm) 7 Inner diameter bearing (mm) 40 Outer diameter bearing (mm) 52 Bearing angle outer (°) 45 Type ACB BLACK OXIDE ACB 4545 150 BO - 1-1/2 Black Oxide Angular Contact Bearing Upgrade your bike with the ACB 4545 150 BO angular contact bearing, designed for optimal performance and durability. This high-quality bearing features corrosion-resistant black oxide/magnetite coating on 52100 high-carbon chrome alloy races, combined with grade 10 balls for smooth operation. The 45° x 45° contact angle ensures excellent load distribution and stability. Thanks to its corrosion-resistant finish, this bearing offers long-lasting, worry-free performance and comes with a two-year warranty. In the bicycle industry, this bearing is also known by the following part numbers: HSS 6011, BAA0695K, TH-070, MR-128, MH-P16, TH, MR082.