What is Needle Roller Bearings

With thin and long needle bearing roller (roller length of 3 to 10 times the diameter, angular contact bearing the diameter of generally not more than 5mm), and therefore radial structure is compact, its diameter size and load capacity and other types of bearings, outer The minimum diameter, especially for radial bearing installation dimensions restricted structure of needle roller bearings according to different occasions, can be used without an inner ring of the bearing or needle roller and cage assembly, this time bearing mating journal surface and the housing bore directly on the surface as the inner and outer rolling surface of the bearing, in order to ensure load capacity and operating performance and have the same bearing rings, shaft or housing bore raceway surface hardness, machining accuracy and surface quality should be bearing rings. Uses a combination of roll needle bearing is a bearing unit to the heart needle roller bearings and thrust bearing components portfolio, its compact structure, small size, high precision rotation, can withstand high radial load at the same time bear certain axial load. And product structure forms, wide adaptability, easy to install. Combined needle roller bearings are widely used in machine tools, metallurgical machinery, textile machinery and printing machinery and other machinery and equipment, and mechanical system design allows very compact and nimble.