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 is lower than brass, light weight, and therefore used aluminum and brass solid cage, is mainly applied to speed a higher proportion of light, corrosion and other conditions. (3) the holding engineering plastic rack, there are great development in recent years, mainly because it has some corrosion resistance, self-lubricating properties, friction is small HK172518 needle roller bearings, drawn convenient, cheap, 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. Governance and needle roller bearings Limited staff and thanked all walks of life support and love! We sincerely welcome domestic and foreign merchants work together to achieve win-win situation. Practice has proved that working at less than 90% of the speed limit state is good. Grease lubricated bearings speed limit than oil lubricated bearings speed limit is low, fueling a bearing on the speed limit attainable impact. Must focus HK1718 needle roller bearings, for grease lubricated bearings, the speed limit is only 80% of the general speed limit of the needle bearing using a high-quality bearing oil recirculation system, but for oil mist lubrication system, the speed limit generally 50% higher than the same basic lubrication system. NA, NKI-type bearings without inner ring is RNA, NK-type needle bearings. Such bearings without inner ring for radial mounting dimensions restricted support structure to match the journal and the bearing directly as a rolling surface. As raceway axis, the hardware must be quenched and polished, and only when it is processed to the appropriate size and shape accuracy HK172415 needle roller bearings, needle roller bearings to the whole of life and high running accuracy. Also, because without inner diameter so that the shaft can also be made appropriate to increase, thus increasing the rigidity. NA Needle roller bearings HK172415 Needle Roller Bearings _ governance (certification) _ Needle roller bearings supplied by Linqing municipal and needle roller bearings plant. Linqing municipal and needle roller bearings plant (www.zhgzzc.com) (www.zhgzzc.net) Shandong Liaocheng, other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. Needle in governance and leadership with the staff warmly welcome all inquiries negotiations to create a better future governance and needle.