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Aggressive skate wheels are usually between 54 and 72mm, while anti-rocker wheels are between 40 and 47mm. The balance between hardness and grip is the key to an optimum skate wheel. Anti-rocker wheels are small, hard wheels designed for grinding rather than rolling.
Two inline skate wheels with different durometer – 85A and 83A Digital Shore hardness tester. The Shore durometer is a device for measuring the hardness of a material, typically of polymers. [1] Higher numbers on the scale indicate a greater resistance to indentation and thus harder materials. Lower numbers indicate less resistance and softer ...
The hardness (or durometer) determines the grip and slip of a wheel. Durometer is measured either on the A or D shore scales, where a higher number is a harder and more slippery wheel. Skaters may choose wheels based on their skating discipline and the floor type they are skating on (wood, sport court, concrete, etc.).
Urban skates Hockey skates. Inline skates are boots with wheels arranged in a single line from front to back, allowing a skater to roll along on these wheels. Inline skates are technically a type of roller skate, but most people associate the term roller skates with quad skates, another type of roller skates with a two-by-two wheel arrangement similar to a car.
They tend to last well, but can be easily damaged if used outdoors. Wheels for outdoor use are softer with a durometer of 82–87, and tend to wear more quickly. Harder outdoor wheels can also be used effectively indoors. Skaters sometimes combine different hardness wheels on the same skate in an attempt to achieve the best combination.
The superficial Rockwell scales use lower loads and shallower impressions on brittle and very thin materials. The 45N scale employs a 45-kgf load on a diamond cone-shaped Brale indenter, and can be used on dense ceramics. The 15T scale employs a 15-kgf load on a 1 ⁄ 16-inch-diameter (1.588 mm) hardened steel ball, and can be used on sheet metal.
An example of this is having 80 mm wheels in the 2nd and 3rd position and 76 mm in the front and back. A short frame (230–245 mm) is used to give the skate the maximum possible maneuverability. Inline skates used for slalom have a very tight fit with a strong cuff, to give sustained ankle support.
Roller skating popularity began during the late 1950s and 1960s at rock 'n' roll teen dance halls, but exploded and took off in the 1970s and 1980s due to the introduction of large rubberized polymer wheels such as Krypto-Pro, to replace metal wheels, becoming popular and an iconic thing of that time. In the early 1990s it would begin to ...