Rolling Bearings

Welcome to my rolling bearings blog.Here you will learn about rolling bearings tips and how to find good information.

If you’re into skateboarding, you’re obviously familiar with the standard short skateboard, but have you ever seen someone ride a longboard? Other than the difference in length, I bet you wonder how these two types of boards are different. Keep reading to learn the similarities and differences of the skateboard and the longboard.

A longboard is just a skateboard that’s much longer than usual, and used for longboarding (as opposed to skateboarding). Instead of street style skating using ramps and pipes, longboards are almost always used for downhill racing, getting from point a to point b, or cruising around town. Since longboards are heavier than a standard board, they are not ideal for doing any kind of tricks. Longboarding is compared to surfing, like “surfing on land” or “surfing on concrete”. The design of the longboard allows big turns and quick carves just like the surfers do.

Longboarding started becoming popular around the same time as surf culture back in the 1950’s. People say that longboarding started in southern California where riders enjoyed rolling hills and streets, but some believe longboarding started in Hawaii. This is still arguable today.

The equipment used for longboarding is nearly the same that is used for skateboarding. You’ll notice longboarders will wear gloves and a helmet at a minimum. Longboarders participating in downhill races will wear special gloves to protect their hands while maneuvering the board (this is done in a lying position). Of course wrist, knee, and elbow padding is always recommended, especially for a beginner.

Most longboards are 35-60 inches long. Shorter boards can still be called longboards if their main purpose is the same as longboarding (cruising, downhill racing, travel). Longboards come in all kinds of shapes such as: pintails, flat nose, and boards shaped like a longer shortboard. Pintails allow looser trucks and larger wheels to be installed for more of a smooth surfing feel.

Longboard wheels can be much larger than regular skateboard wheels. The size difference is because smaller wheels have to spin faster to maintain the same speed, so larger wheels create less friction for a faster and smoother ride. Smaller wheels sometimes have problems with sticks, rocks, and cracks in the street or sidewalk. The larger the wheel size, the less likely it will stop rolling, and more likely to just roll over the obstruction.

Other hardware such as trucks and bearings are exactly the same on a skateboard and a longboard. There are a few types of trucks specific to longboards, which make the boards easier to use for downhill racing. Two of these are called Randal R-I Downhill style trucks and Torsion trucks.

Many Longboarders as well as skateboarders like to build their own decks in order to get the exact board they want. Board builders have a variety of materials like fiberglass, bamboo, and even a foam core. If you’re thinking of building your own skateboard or longboard, everything can be purchased on the internet or local skateshop, including board building instructions.

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Acetal is commonly known as Delrin. Formaldehyde when polymerized yields out the product known as derlin. It is the chemical composure, its structure and high crystalline structure of this material which gives a combination of such physical properties that are not available in case of other materials whether it be any plastic or any metal. It is used in a number of places such as the gears .moreover it has been used in spacers. Its use is not limited to this only as it has been used in washers as well as handles. Moreover due to the high rigidity and strength of these rods, they have been used in places where a product has to resist high wearing like in bearing.

When it was introduced in the sixty’s it has been used in number of industries which include the automotive industry. It has also been used in industries that produce consumer goods.

It is a thermoplastic resin produced from acetal. Some of the properties that make this material so useful is that this material is known for its tensile strength, its inertness to different solvents and moreover its rigid structure. A company named E. I. du Pont de Nemours & Co. has registered this product. DELRIN rods have the same characteristics and properties of different metals like, and stainless steel.

There are a number of variations of these rods .some examples are Delrin100, Delrin500. Delrin 150SA represents the natural color of the delrin rods whereas the black color is represented by the delrin 100. Delrin is a trademark registered product.

A copolymer of acetal can be utilized to produce rods of high strength.

These rods have been produced in a number of variations. Each variation is produced with a different property. Some of the properties of these rods are: They are mechanically strong and very elastic by nature. Delrin can be used as a lubricant and it is indeed used to lubricate many machine parts. It has stable dimensions and they absorb very less moisture which is yet another plus point of these rods.

Different rods have different properties. For instance delrin 150 SA is natural and used for standard and general purposes. Delrin black is equivalent to the 150 version. This version of the rod is ultra violet stabilized. Delrin 507 has edge over the other versions and is the best of all the versions.

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My right wheel started making noises when i turned and when i was braking so i decided to lift it up and wiggle the wheel to see if it could be the wheel bearing and what do ya know… Its actually pretty bad..

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Bunting Bearings EP101208 5/8″ Bore x 3/4″ OD x 1/2″ Length Powdered Metal SAE 841 Sleeve (Plain) Bearings


Bunting Bearings EP101208 5/8″ Bore x 3/4″ OD x 1/2″ Length Powdered Metal SAE 841 Sleeve (Plain) Bearings Feature

  • Self Lubricating Bronze Bearing; SAE 30 Oil provides ideal lubrication in most applications
  • Large Working Temperature Range, 10 F to 220 F
  • Conformance to ASTM chemical and physical properties
  • Non Magnetic
  • Corrosion resistant

Bunting Bearings EP101208 5/8″ Bore x 3/4″ OD x 1/2″ Length Powdered Metal SAE 841 Sleeve (Plain) Bearings Overview

Bunting Bearings offers a complete line of stock plain bearings, flange bearings and washers made of P/M bronze. Bunting sintered bronze stock bearings have long conformed to ASTM chemical and physical properties, and are the first to include all ASTM standard sizes to ASTM recommended dimensions and tolerances. After forming, sintering and sizing, the bearings are vacuum impregnated with SAE 30 oil that provides lubricant which is metered from the bearing to the shaft during rotation. Standard off-the-shelf oil impregnated bronze bearings should function satisfactorily in temperatures ranging from 10°F to 220°F.

Bunting Bearings EP101208 5/8″ Bore x 3/4″ OD x 1/2″ Length Powdered Metal SAE 841 Sleeve (Plain) Bearings Specifications

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*** Product Information and Prices Stored: May 05, 2011 07:43:05