1. Common carbon structural steel: carbon structural steel is divided into 5 grades according to the yield strength of steel: Q195, Q215, Q235, Q255, Q275. Each brand is divided into A, B, C and D grades due to its different quality. Q195, Q215, Q235 good plasticity, can be rolled into steel plate, steel bar, steel pipe, etc. Q255, Q275 can be rolled into steel, steel, etc. Carbon Steel Coil,Low Carbon Steel Coil,Hot Rolled Coil,Ss Coil Shandong Panhua Metal Material Co. LTD , https://www.panhuametal.com
[Development background]
Motorcycles in emerging countries as a means of transport, the market continues to grow. Especially in emerging countries, in order to ensure the durability of bearings used on motorcycle wheels, there has been a continuous demand for water resistance and dust resistance based on high sealing performance. Secondly, in recent years, with the emission limits and rising fuel prices, the low fuel consumption of motorcycles has become an important issue.
This time, NSK uses seal shape analysis technology and simulation evaluation technology to achieve a significant reduction in friction loss that affects fuel consumption while ensuring sealability.
ã€product features】
The developed product for motorcycle wheels has specifically designed the optimum length, thickness, and shape of the sealing lip, which ensures the sealing performance while reducing the friction loss.
2. High quality carbon structural steel: steel number is expressed by the average mass thousandth fraction of carbon element content. Such as 20#, 45#, etc. Application: Mainly used for manufacturing various machine parts.
3. Carbon tool steel: steel grade is expressed by the average mass thousandth fraction of carbon element content, and preceded by T. Such as T9, T12, etc. Purpose: Mainly used for manufacturing various cutting tools, molds, measuring tools, etc.
4. Cast steel: Cast steel number is preceded by ZG. Purpose: Mainly used for manufacturing parts with complex shape and need certain strength, plasticity and toughness, such as gears, couplings, ect.
Nippon Seiko Co., Ltd. (hereinafter referred to as "NSK", the head office / Shinagawa-ku, Tokyo, chairman, and representative executive manager Otsuka Otsuka) successfully developed a "low-friction ball bearing" for motorcycle wheels. The developed product greatly reduces the friction loss while ensuring the sealing performance, and contributes to the reduction of fuel consumption. NSK is mainly investing in emerging markets where the motorcycle market is rapidly expanding. It is expected that global sales in 2015 will reach 1 billion yen (approximately RMB 80.6 million).