Phil Wood & Co. is credited with pioneering the first modern production sealed bearing cycling components. Our bearings both Standard and low drag Carbonyte are manufactured for us to our specifications. We specify the race tolerance, surface honing, ball diameter tolerance, bearing material, gap dimensions, and seal specifications.

Phil Wood Standard bearings are an extremely high quality stainless steel cartridge bearing with a 100% Phil Waterproof Grease fill and have full contact seals to ensure maximum durability.

Phil Wood Carbonyte bearings are an extremely high quality stainless steel cartridge bearing with a 30% fill with our proprietary Carbonyte grease and have a partial contact seal. Every internal specification has been changed to produce a low rolling resistance.

Please note: Because the seals in our Carbonyte bearings are not full contact as would be found in our Standard bearings, we do not recommend them for year around mountain bikers or our round the world touring customers. Our Carbonyte bearing is for racing and fair weather riding.
  
Phil Wood bearings can be used to replace bearings found in many other cycling manufacturer’s parts. Please refer to the bearing sizes to determine which bearing(s) may best meet your needs. If you need assistance determining the appropriate bearing size, please contact us. If at all possible, please provide your existing bearing dimensions (inner diameter, outer diameter, and width) so we can quickly determine what you’ll need.