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Typical longboard wheels range from 65 to 107 millimeters (2.6 to 4.2 in) in diameter. A taller wheel will have slower acceleration but a faster rolling speed. Smaller wheels have the opposite effect. The durometer of a wheel is how hard the urethane is. A softer wheel will be ultimately slower than a harder wheel on smooth surface.
Each skateboard wheel is mounted on its axle via two ball bearings. With few exceptions, the bearings are the industrial standard "608" size, with a bore of 8 or 10 mm (0.315 or 0.394 inches) depending on the axle, an outer diameter of 22 mm (0.866 inches), and a width of 7 mm (0.276 inches).
Wheels: Penny board wheels are made from Polyurethane, with a plastic core. The wheels on 22-inch (55.9 cm) and 27-inch (68.6 cm) Penny boards have a diameter of 59 mm (2.323 inches), while Penny longboard wheels have a larger diameter of 69 mm (2.717 inches).
[93]: 81, 84 But by 1988, 64mm Rollerblade Zetra 100 and BladeRunner wheels had become the slower wheels, compared to faster, larger, and higher-end Lightning wheels, now at 70mm in diameter. [Q] Around 1999, a normal wheel size for recreational skates was 70-72mm, and large wheels for speed skates meant 78-82mm. [78]: 22–24 [117]: 315–316 ...
Wheels with Asanti 28 in (710 mm) rims on a police Hummer H2 car. The wheel size is the size designation of a wheel given by its diameter, width, and offset. The diameter of the wheel is the diameter of the cylindrical surface on which the tire bead rides. The width is the inside distance between the bead seat faces.
Skateboard wheels come in diameters between 48 mm and 62 mm and are made of polyurethane, with a hardness above 80A. Some wheels will be made harder than measurable on the "A" scale and will have durometers up to 84B (about 104A). Skaters must make a compromise when choosing their wheels.
Wheels: Usually made of polyurethane and sized between 39 and 70 millimeters in diameter, their hardness is measured by durometer, a number ranging from 0 to 100. Soft wheels have a durometer of about 85, hard wheels have a durometer of 98 or higher. .63 mm wheels are usually reserved for longboards , which go significantly faster and benefit ...
As a wheel wears it will decrease in diameter, and its effective cutting speed will be reduced. Some grinders have the provision to increase the spindle speed, which corrects for this loss of cutting ability; however, increasing the speed beyond the wheels rating will destroy the wheel and create a serious hazard to life and limb.