Bearing size is 3 x 10 x 4mm. Stainless steel balls. Fits all newer style Shimano casting reels with bearing part #BNT0194, BNT0084, and TGT0184. These bearings are incredibly fast!
They come shipped bone dry with no oil in them. If you find them to be too fast, you can add a small drop of your favorite bearing oil to slow them a bit. Heavier oil will slow the bearing even more if desired.
Ball bearings are rated in a classification system know as ABEC....Annular Bearing Engineering Committee. Bearings in the ABEC system are all called 'precision bearings' and rated from 1 to 9, 9 being the highest precision. The numbers jump from 1 to 3 to 5 to 7 to 9. A 'standard' bearing is an ABEC 1, a super expensive bearing is an ABEC 9. Shimano's come stock with an ABEC 3 bearing in them. Because these are a very fast bearing, they are also a little noisier than stock. Chances are you won't notice while you're fishing, just a nice 'whirrrr' to them. Any ?'s regarding fit, please either Contact Us or see our Schematics Pages
Kit contains 10 bearings.