The retainer material (1) the vast majority of bearing steel cages are used, the most widely used low-carbon steel stamping ribbon, basket-shaped, box-shaped, etc. holder for bearing conditions of high carbon chromium bearing steel and the environment; using carbon steel plate stamping cage bearing working conditions and environment suitable for bearing with corrosion-resistant steel. (2) non-ferrous metal excellent surface finish quality. In hot conditions, can be silicon bronze solid cage, operating temperature up to 315 degrees Celsius; the strength of aluminum brass lower than the proportion of light HK3516 needle roller bearings, which used aluminum and brass solid cage HK3512 Needle roller bearings, mainly used in high speed, lighter weight, corrosion and other conditions. (3) engineering plastic cage, have made great progress in recent years, mainly because it has some corrosion resistance, good self-lubricating properties, low friction, easily obtained, inexpensive, easy to manufacture, etc., but Easy "aging." Currently used most widely reinforced nylon 66, it continued working temperature range of -40 to 120 degrees Celsius. Product precision dimensional tolerances and geometrical accuracy JB / T8877. Mutual difference of needle roller diameter is 2μm, precision grade is G2 (GB GB309). The diameter of the inscribed circle conforms to tolerance grade F6 without inner bearing assembly in the front. 0 Group predetermined value bearing radial clearance in line with GB / T4604's. Special precision grade is based on GB / T307.1. Needle Roller Bearing Co., Ltd. Linqing municipal and Mr.Song disclose to you, combined needle roller bearings designed for use with the shaft bearing raceway of the bearing stiffness has certain requirements; or with a standard inner ring IR were inlayed on Hardness shaft is not required, the structure will be more compact physical ring needle roller bearings NA, NKI-type bearings without inner ring is RNA, NK-type HK3232 needle roller bearings, needle roller bearings sealed on one side with or without inner ring or double sealed needle roller bearings can effectively prevent the intrusion of dirt needle roller bearings, has filled the inner bearing right amount of lithium grease. This kind of bearing inner ring outer aspect ratio, which makes bearings in the shaft to the bearing box with a little displacement but also to ensure good sealing to prevent injury to the bearing contamination. Bearing inner ring has a lubrication hole also can be configured as desired by the outer or inner relubricated HK3232 needle roller bearings | needle roller bearings | needle by LINQing municipal governance and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) (www.zhgzzc.net) strong, credible, in other industries, Liaocheng accumulated a large number of loyal customers. The company better work attitude and constantly improve governance and innovative ideas will lead the needle into the brilliant and you work for a better future!