Each skateboard wheel is mounted on its axle via two bearings. With few exceptions, the bearings are the industrial standard "608" size, with a bore of 8 mm (or 10mm depending on the axle), an outer diameter of 22 mm, and a width of 7 mm. These are usually made of steel, though silicon nitride, a high-tech ceramic, is sometimes used. Many skateboard bearings are graded according to the ABEC scale. The scale starts with ABEC1 as the lowest, followed by 3, 5, 7, and 9. It is a common misconception that the higher ABECs are better for skateboarding, as the ABEC rating only measures tolerances, which do not necessarily apply to skateboards. Bearing performance is determined by how well maintained the bearings are. Maintenance on bearings includes periodically cleaning and lubricating them [1]. Bearings that are kept unmaintained have their performance greatly lowered and will soon need to be replaced. Bearing cleaning kits are commonly available on the market. The ABEC rating does not determine the speed or durability of a skateboard bearing. In particular, the ABEC rating says nothing about how well a bearing handles axial (side-to-side) loads, which are severe in most skateboard applications. Many companies do not show the ABEC rating, such as Bones Bearings, which makes bearings specifically for skateboarding, often marketed as "Skate Rated". Each bearing usually contains 7 steel or ceramic bearing balls, although other configurations are used as well.
The DreadXBoards Concave Skateboard has Plastic Deck Injection Molded for excellent durability. It features Urethane Wheels 59mm 78a, aluminum trucks, and Abec 7 Bearings. It is completely assembled and is ready to ride. It is perfect for beginners or experienced riders. It can load up to 185 lbs. It is great for kids and adults. It has an excellent rating of 4 on Amazon.

The wheels of your skateboard can greatly affect your ride in numerous ways, such as the speed, your ability to take control of the skateboard’s movements, and what you feel while riding the board. The good news is that they come in various sizes, levels of durability, and colors, allowing you to pick one that suits your skateboard preference and style.
In most cases, it is available in black but you can also find clear ones that are ideal for you if you want to show a specific logo. Another nice choice that you have is the die-cut grip tape, which works in displaying the color or design of the deck beneath it. Make sure to choose a grip tape at a size, which perfectly suits your skateboard’s deck.
Land at the same time – Again, this is probably silly to repeat, but you’d be surprised to find out how many people execute a successful jump, and then throw their hands up in the air to celebrate their new-found triumph, and forget the most important part: landing. The best position for your feet to be in is as close to the trucks as possible. Don’t land too close to the nose or tail, or you could end up breaking off those the board itself. Also, remember to bend your knees to absorb the jump. Don’t want to land straight-legged: that’s how kneecaps are destroyed.
Penny Skateboards are available in 22", 27" and the 36" for different riding styles, skating abilities and personal preference. You can find a Penny board that's perfect for you and your skateboard needs. The 36" Penny Longboards allow you to carve up the streets, mountains or beach in style. Regardless of which size Penny is right for you, everyone needs a Penny skateboard to cruise on at the beach, the park, the shops or while on holidays.
An Ollie is basically an upward/forward jumping trick. The name “ollie” comes from the nickname of Alan Gelfand who created the ollie in 1976. The ollie was then modified for flat-ground use by Rodney Mullen in 1982, and it is this flat-ground version of the ollie which is most commonly referred to as the ‘ollie’ today. The ollie is arguably the most important trick in skateboarding because it is the foundation of the majority of skateboard tricks which require lift. When you want to do a trick like the kickflip, when you want to get onto something like a ledge, or down something like a set of stairs, or try handrails, the ability to ollie is a necessity. Therefore the ability to ollie high and with good control is critical to your total skateboarding skill-set.
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Sublimation (phase transition) is the transition of a substance directly from the solid to the gas phase without passing through an intermediate liquid phase. Sublimation is an endothermic phase transition that occurs at temperatures and pressures below a substance's triple point in its phase diagram. In this case, ink is transferred to a base layer, fibreglass for example, through heat and pressure, the result is a full color graphic that will not come off as easily as the more common heat transfers. This application is often found with bamboo boards and composite construction longboards where fibreglass can allow for various degrees of flex or stiffness depending on the ride you're looking for, cruising and carving versus slalom and downhill.

This is how I learned how to ollie. Place your skateboard next to a curb, right up against it. This will help keep your board from rolling. Next, do everything that I just described, but don’t worry about what your board does. Just do it, and land up on top of the curb, on the sidewalk. Don’t stress about whether the skateboard will be there, or if you will get hurt – just go through the motions of ollying up the curb. If you do it right, the skateboard will be there. If you do it wrong, you’ll probably just land on your feet on the sidewalk. Here’s the key – just do it and expect it to work. Your body understands what you are trying to do, and the less you stress, the more it can kick in and fill in the blanks.

Longboard - A longboard is similar to a cruiser in terms of overall use and getting around town. Longboards start at about 42 inches in length and about 9 inches in width. When you buy a longboard, the wheel base of the trucks is usually wider and they have wheels starting at roughly 60mm. This gives you more maneuverability and a very smooth ride.