Curve of the wheel bolts for the raceway part of it is through hardened. To avoid stress concentration, thick-walled roller arc-shaped outer surface of the loop. Curve of the wheel there with a single, double ring, without the ring, with a sealing ring of a variety of models. Grease a large space with a storage ring, provide permanent lubrication, and extended lubrication intervals. Seals made of N220 or polytetrafluoroethylene, which operating temperature ranges of -30 ° C to + 100 ° C or -30 ° C to + 180 ° C. Curve wheel mounted close it can withstand heavy loads, but the speed is low, and must be constantly re-lubrication Needle roller bearings involves classification: needle roller bearings, cylindrical roller bearings Needle roller bearings HK303832, water pump bearings, drawn cup roller needle bearing needle roller bearings, needle roller bearings one-way bearing HK323811, roller bearings, full complement cylindrical roller bearings, SL full complement cylindrical roller bearings, bolt roller bearings, cylindrical roller bearings thrust needle roller bearings HK3232, thrust roller bearings, combined Needle roller bearings, drawn cup MF full complement MFY needle roller bearings Drawn cup full complement needle roller bearing (grease limit) SCE SCH perforation drawn cup needle roller bearings BEC BCH Sealed drawn cup roller B drawn cup needle bearing needle roller bearing full roller bearings are generally not the inner class. If you need to use the inner ring, the choice of IR-type inner bearings, needle roller bearings, bearing roller bearings, full roller bearings. Needle roller bearings HK303832, governance and needle (certified), 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.