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Skate bearings for Roller Skates, inline skates or skateboards. We have the top brands Kwik, Bones, Bevo, BSB, and Lynx. We sell ABEC 5, ABEC 7 and ABEC 9 bearings.
The diameter of all bearings for skates are the same. The 7mm or 8mm size refers to the hole in the middle of the bearing and tells you what size axle the bearings will fit. 7mm bearings fit a 9/32" axle, and 8mm fits a 5/16" axle. Most skates sold in the last 10 years have 5/16 axles and use 8mm bearings. High end plates like Snyder, Roll-Line and Atlas as well as the Sure Grip Power-Trac use 7mm bearings.
If you are not sure call us toll free 877-265-9099 or send an email to Sales@NewSkates.com
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BEARINGS
Bearings sit in the wheel hubs and are what allow the wheels to roll in the skates. Most bearings are rated using the ABEC rating system. The higher the bearing rating, the better the bearing is. The ABEC rating has nothing to do with bearing quality, it is only a rating system.
What is ABEC?
ABEC stands for Annular Bearing Engineers' Committee. It is NOT a brand of bearing. This committee works to determine the standards for bearings for the Anti-Friction Bearing Manufacturers Association
(AFBMA).
The ABEC scale classifies different accuracy and tolerance ranges for bearings. There are five ratings in the ABEC scale:
ABEC-1
ABEC-3
ABEC-5
ABEC-7
ABEC-9
The ABEC rating of a bearing is determined by the following (for a 608 size bearing):
How close the bore is to 8mm in microns
How close the outer diameter is to 22 in microns
How close the width is to 7mm in microns
The rotating accuracy in microns
Does ABEC affect the speed of your skates?
No. Not unless you are skating at 330 mph. That's based on a 608 bearing limiting speed of 32,000 rpm. Only in extremely high speed applications like ultra high speed motors and precision measuring instruments can bearings above ABEC 1 affect performance. Regardless of how fast you plan to go, speed is affected first and
foremost by the choice of lubricant.
If we're going to talk about tolerances, the fit of your wheels and axles have a much greater effect on performance than ABEC rating. Wheels and axles for inline skates have extremely loose fits that allow you to press the bearings into the wheel by hand. This masks the benefits of a higher precision bearing by allowing it to slip on the axle or in the wheel. Slippage between the mating parts results in energy loss. Lost energy is lost speed.
Remember how fast you go is up to you and your ability. Higher rated bearings will not make you go faster, but you do have more ROLL OUT. Another way to put this is how long it takes for the wheel to stop spinning, higher rated bearings will spin longer after you stop pushing.
The real qualities of the bearings are the components. Bearings consist of Races, Balls, Cages & Shields. Chrome steel races are far superior to cheaper carbon steel races and this is the basic difference between good quality bearings for roller skates and cheap
imitations. The carbon steel bearings will roll freely if there is no pressure on them, but after a few times on the skates, they tend to slow the bearings considerably.
Lubricant …What is it?
The two most common lubricants are grease and oil. Grease is basically oil with a thickener or soap. The thickener acts like a sponge to soak up the oil when not in use.
What does it do?
Keeps metal parts from wearing against one another keeps dirt away from the sensitive inner workings. Grease Oil helps keep dirt out prevents material wear can suspend contaminants requires frequent servicing prevents material wear has low torque requires little servicing does not last as long increases torque lasts a long time. From the above you can see that a greased bearing requires little servicing yet cannot run as fast as an oiled bearing. An oiled bearing is susceptible to dust and contamination so it needs to be serviced more often. As grease is thicker, it acts as a seal against dirt, but at
the same time it can increase torque and slow down the bearing. A bearing lubricant or cleaner is recommended vs. using any household chemicals to lubricate or clean them. Household cleaners may seem like they are doing the job, but in reality, they are slowing the bearings down
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