NSK bearing

NSK bearing was founded in 1916 and produced the first ball bearings made in Japan. Since then, the company has spearheaded the development of bearings in Japan. NSK now offers a full range of bearings and sells them worldwide. NSK bearings have contributed greatly to the growth of many industries and to the advancement of mechanical technology. Now, the company has the largest share of the bearings market in Japan and is one of the largest bearing suppliers in the world.
NSK has used its expertise in precision machining technology, refined through years of bearing manufacturing, to diversify into:

•automotive products
•precision machinery and parts
•mechatronic products

      NSK was founded in 1916 and produced the first ball bearings made in Japan. Since then, the company has spearheaded the development of bearings in Japan. NSK now offers a full range of bearings and sells them worldwide. NSK bearings have contributed greatly to the growth of many industries and to the advancement of mechanical technology. Now, the company has the largest share of the bearings market in Japan and is one of the largest bearing suppliers in the world.

NSK has used its expertise in precision machining technology, refined through years of bearing manufacturing, to diversify into:

  • automotive products
  • precision machinery and parts
  • mechatronic products

      Since the 1960s, NSK has been aggressively developing its overseas markets. At present, the company has 70 sales sites in 25 countries, and 37 production sites in 12 countries. NSK strives to enhance development capabilities, productivity, sales forces, and management abilities throughout its global network, aiming for further advancement of its motion and control technologies.

LFR 5201-10 2RS RB

KBS 2045 PP

 

      A skateboard is a type of sports equipment used primarily for the activity of skateboarding. It usually consists of a specially designed maple wood board combined with a polyurethane coating used for making smoother slides and stronger durability.

      A skateboard is propelled by pushing with one foot while the other remains on the board, or by pumping one's legs in structures such as a pool or half pipe. A skateboard can also be used by simply standing on the deck while on a downward slope and allowing gravity to propel the board and rider. If the rider positions their right foot forward, he/she is said to ride "goofy"; if the rider positions their left foot forward, he/she is said to ride "regular". If the rider is normally regular but chooses to ride goofy, he/she is said to be riding in "switch", and vice versa. A skater is typically more comfortable pushing with their back foot; choosing to push with the front foot is commonly referred to as riding "mongo."

      Recently, electric skateboards have also appeared. These no longer require the propelling of the skateboard by means of the feet; rather an electric motor propels the board, fed by an electric battery.

      There is no governing body that declares any regulations on what constitutes a skateboard or the parts from which it is assembled. Historically, the skateboard has conformed both to contemporary trends and to the ever evolving array of stunts performed by riders/users, who require a certain functionality from the board. Of course, the board shape depends largely upon its desired function. Longboards are a type of skateboard with a longer wheelbase and larger, softer wheels.

     Skateboards have 3 axis. The tail axis (running from nose to tail), the central axis (running straight down through the center of the board), and the short axis (running from the width of the board, perpendicular to the tail axis).

     The two main types of skateboards are the long board and the short board. The shape of the board is also important, the skateboard must be concave to perform difficult tricks.

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                                Skate Bearings

 

What does ABEC mean for Skateboard Bearings?

 

        What does ABEC mean? Skateboard bearings often have an ABEC rating, and skaters are often confused about what that means. What are ABEC bearings? Is the ABEC bearing rating important?

 

         Answer: ABEC stands for Annular Bearing Engineers' Committee, and is the American method for rating the accuracy and tolerance rating of bearings. ABEC standards are set by the American Bearing Manufacturers Association (ABMA).

 

         So what does that mean? Well, bearings are used for all kinds of things, not just skateboard wheels. The higher an ABEC rating, the more accurate and precise the bearing is. When companies make bearings, sometimes they cheaply slap them together, and sometimes they are very carefully designed and assembled so that there is as little space as possible between the parts. When bearings are used in expensive and important machines, companies will spend hundreds of dollars on just one bearing - it has to be perfect!

 

          But for skateboarding, we use much less precise bearings. This is because they are cheaper, and because with all the slamming and sudden starts and stops, a really expensive, delicate bearing would get ruined.

 

ABEC ratings are only odd numbers, and start with ABEC 1:

 

•ABEC 1 is the most crude, the least precise, the most durable and the cheapest.
•ABEC 3 is what most cheap complete skateboards come with, especially skateboards from China. ABEC 3 bearings will work for most skateboarding, but won't roll very smoothly or fast.
•ABEC 5 bearings are the norm in skateboarding. You get a reasonable amount of speed, and at a reasonable cost. However, there are lots of people who argue that the skateboarding industry is lying, and that most ABEC 5 skateboard bearings you see aren't actually built to ABEC 5 standards...
•ABEC 7 bearings would be very fast and smooth, but very expensive. Plus, you start to run the risk of needlessly damaging them if you skate hard or aggressively. Also, if you are buying cheap ABEC 7 bearings made in China, you are probably being lied to (read The Truth about Skateboard Bearings.
•ABEC 9 and higher bearings would be ridiculous to use in a skateboard, unless you are doing downhill luge style skating, or something else where your goal is to go insanely fast. If you aren't spending a fortune on these bearings, then don't trust that they are in fact ABEC 9!

 

The ABEC rating of a bearing is determined by asking these four questions:

1.How close is the bore to 8mm in microns (a micron is one millionth of a meter)?
2.How close is the outer diameter to 22 in microns?
3.How close is the width to 7mm in microns?
4.What's the rotating accuracy in microns?

 

        Don't worry if that doesn't mean anything to you - I just wanted to include it in case you're reading this for a paper you might be writing for school!

        ABEC isn't the only way to rate skateboard bearings, by the way. There is also the International Standards Organization (ISO) system and the [German National Standards Organization (DIN) system. Here is a chart to help you compare:

 

•ABEC 1 = ISO 0 (or "normal") = DIN P0
•ABEC 3 = ISO Class 6 = DIN P6
•ABEC 5 = ISO Class 5 = DIN P5
•ABEC 7 = ISO Class 4 = DIN P4
•ABEC 9 = ISO Class 2 = DIN P2

 

         It's important to mention that not all skateboard bearings even use the ABEC rating system. Rockets, Ballistech Missiles and Bones Bearings all use their own systems to rate their bearings. This might seem fishy, but it's actually a very good thing. Most bearings used in skateboards were never designed with skateboarding in mind! These companies have developed and built their bearings specifically for skateboards, and they get a lot of respect in the skateboard community because of this.

         I hope this explains what ABEC means, and that you now have a better understanding. If you have any questions that weren't covered here, please feel free to write me and ask!

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