Inline skate wheels are sold individually. Quad skate wheels are sold in a set of 8 wheels, unless otherwise noted
5: Does wheel size affect speed?
Yes, it does. Generally, the larger the wheel,the better the roll. So, you will be able to cover more surface area with the larger wheel with less effort and you will go faster and have a smoother ride.
6: What does ABEC mean?
The following info is from an American bearing company that manufactures ABEC rated bearings and non-ABEC rated bearings.
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.
7: What does 7mm and 8mm mean?
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.
8: What does the hardness number mean?
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 the wheel. For outdoor use, you will want a wheel that is below 90A. For indoor use you will want a wheel from 90A up to 103A.
9: Should I get a high top or low top boot?
It's up to you! Neither one is "better" than the other. High top boots generally offer more ankle support, so if you have weak ankles that may be right for you. Low top boots are more popular and allow you to move your ankle more freely and it will also not be as hot on your foot. The low top boots are generally considered speed boots.
10: What is the difference between Double Action and Single Action?
A Double Action Plate has two cushions the kingpin is usually at a 10 degree angle. It is used for all types of skating.
A Single Action Plate has one cushion and the kingpin is set at a 45 degree angle. This is made only in metal plates and is much heavier than the newer nylon plates. They are only used for quad speed skating.
11: Is a metal plate better than nylon?
This depends on what the skater prefers. Nylon skate plates are cost less to make. Skates with nylon plates cost less and have better features. Most nylon and metal plates have double action trucks, Nylon is lighter. Most of the weight in a pair of skate is in the wheels, bearings and trucks. Nylon over metal plates will only have a slight difference in the weight of the skates. Choose what is best for you.