Now the world's larger main Swedish bearing manufacturer SKF (medium and large metallurgical and mining bearings, automotive bearings), Japan NSK (small, low-noise bearing), NTN (CVJ automotive bearings, medium-sized ball bearings), KOYO ( automotive bearings), NBM (OA miniature bearings) cleaning machine bearings, NACHI (small and medium sized ball bearings), Germany FAG (medium and large tapered cylindrical roller bearings), INA (needle roller bearings and hydraulic rams), the United States TIMKEN ( Tapered roller bearings) bearings, Torrington (precision ball bearings, spherical roller bearings for heavy machinery) and so on. So far, the world's number one is SKF, second, FAG, third, TIMKEN. 8 Rolling bearings structure constructed Rolling bearings are developed on the basis of the rolling bearing, its working principle is based on rolling friction instead of sliding friction, usually consisting of two rings, a set of rolling elements and a cage consisting of very versatile strong, standardization, serialization high degree of machine parts. Due to various mechanical has different operating conditions, the rolling bearing load capacity, performance and other aspects of the structure and have put forward a variety of different requirements. To this end, the need for a wide range of rolling bearing structure. However, the basic structure is composed of inner and outer rings, rolling elements and a cage - often referred to as four pieces. Shenzhen for sealed bearings oil bearing, plus lubricants and seals (or dust cover) - also known as the six pieces. Type the name of a variety of bearing rolling elements are mostly based on the name to carry out the appropriately named. The role of the various parts in the bearing are: for radial bearings, inner ring is usually a tight fit with the shaft, and run together with the shaft, the outer ring is usually the case with the bearing or mechanical transition fit into the hole, played the supporting role. However, in some cases, also the outer ring functioning, role or act as bearing inner ring fixed to the inner ring, outer ring are simultaneously operated. For thrust bearings, and shaft, said shaft ring tight fit and movement together with the bearing or mechanical transition fit into shell holes and played the supporting role of said seat. Rolling element (ball, roller or needle) in the bearing usually means holding frame uniformly arranged between the two rings for rolling motion, its shape, size and number of direct influence of load capacity and performance of the bearing. In addition evenly spaced cage rolling elements can open outside, but also from the guidance of rolling bearing internal rotation and improve lubrication performance and so on. INA INA Bearing Company Overview Uzawa (Ina Bearing), headquartered in Herzogenaurach near Nuremberg, Germany Heer Zuo root - if He Lage, founded in 1946, is the founder of needle roller and cage combination technique was developed by George Dr. · Schaeffler, now affiliated with the company and FAG bearings Schaeffler (Schaeffler KG) Group. From the establishment of the company, has become the world leader in the field of vacuum equipment needle roller bearings bearings, needle roller bearings from the original field and quickly expanded to a wide range of products. At present, the German INA Bearing Group has more than 30 manufacturing plants, more than 30,000 employees throughout the world. PCB equipment bearings, along GF bearing Electrical (certified), the bearing is provided by Shenzhen-GF bearing Electrical Co., Ltd.. Shenzhen City, Guangdong Development bearing Electrical Co., Ltd. (www.sgfzc.com) (www.sgfzc.com) is Shenzhen, the other leaders over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. In bearing Electrical leadership Shun GF staff warmly welcome all inquiries negotiations to create Shun GF bearing Electrical better future. You can also access (www.sgfzc.com/supply_details_47920965.html), for more information about the company.