NA, NKI-bearing without inner ring is the RNA, NK-type needle roller bearings. Such bearings without inner ring for radial mounting dimensions restricted support structure needle roller bearings, and bearing journal match directly as rolling surface. As raceway shaft, the hardware must be quenched and polished, but only when it is processed to the appropriate size and shape accuracy, the entire needle roller bearings to a higher life expectancy and running accuracy. Meanwhile one-way roller bearing, because no inner diameter so that the shaft can also be appropriately increased, thus increasing the rigidity. NA Needle Roller Bearings Needle Roller Bearing Co., Ltd. is located in Linqing governance Linqing Pan Town Industrial Park West first, and tobacco shops bearing market together, close to the Pro Hall Road, traffic is very convenient. 644079 Needle roller bearings of various types of rolling bearings have different characteristics for different usage of various machinery. When selecting the bearing type, usually the following factors should be considered. Under normal circumstances: when chosen to withstand the thrust load thrust bearings, angular contact bearings, high-speed applications typically use ball bearings to withstand heavy radial loads, the selection of roller bearings. In short, the choice of who should be different manufacturers, many bearing products, the selection of the appropriate type. Space and position occupied by machinery bearings in mechanical design in general, first determine the size of the shaft, and then, depending on the size selected axis bearing. Usually small shaft choice ball bearings, roller bearings shaft selection. Needle roller bearings, needle roller governance, needle roller bearings provided by LINQing municipal and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) in this area other devoted boundless enthusiasm and passion, governance and the needle has been customer-centric, the concept of creating value for customers, quality, service to win market, and sincerely hope to cooperate with the community to create a successful, create brilliant. Related businesses welcomed the inquiry, contact: Mr.Song.