What does ABEC mean?
ABEC stands for Annular Bearing Engineering Council and it is a rating of how “good” bearings are. Basically the higher the number after ABEC-, the better the bearing is supposed to be. The scale goes ABEC-1, ABEC-3, ABEC-5, ABEC-7 and ABEC-9. Bones Bearings (Swiss, Ceramic) are “Skate Rated” and are basically better than most of the bearings rated on the ABEC scale.
Top ABEC stands for Annular Bearing Engineering Council and it is a rating of how “good” bearings are. Basically the higher the number after ABEC-, the better the bearing is supposed to be. The scale goes ABEC-1, ABEC-3, ABEC-5, ABEC-7 and ABEC-9. Bones Bearings (Swiss, Ceramic) are “Skate Rated” and are basically better than most of the bearings rated on the ABEC scale. 12: What does 7mm and 8mm mean? Top Those refer to the inner diameter of the bearing and the size of the axle it’s going on. Most skates use 8mm (or large) axles so you will need standard 608 size 8mm bearings to go on them. Some of the older model and higher end skates use 7mm (or small) axles and you will need 627 size 7mm bearings. 13: What does the hardness number mean? Top The Hardness (or Durometer) of a wheel is measured on a scale of a number and then an A. For example: 96A. That’s the standard hardness for a quad speed skate wheel. The higher the number, the harder the wheel..The lower the number, the softer t
