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Combination of needle roller bearings and thrust type


The combined needle roller bearing is a bearing unit composed of a combination of a radial needle bearing and a thrust bearing component. The compact needle size and high rotation precision can withstand a high axial load while bearing a certain axial load. And the product structure is diverse, adaptable and easy to install. Combined needle roller bearings are widely used in various mechanical equipment such as machine tools, metallurgical machinery, textile machinery and printing machinery, and can make the mechanical system design very compact and dexterous.

The thrust bearing consists of a thrust cage assembly with a needle or cylindrical roller or ball and a thrust washer. The needle roller and the cylindrical roller are held and guided by the thrust cage. When used with different series of DF thrust bearing washers, many different combinations are available for bearing configurations. The use of high-precision cylindrical rollers (needle rollers) increases the contact length, allowing the bearing to achieve high load capacity and high stiffness in a small space. Another advantage is that if the surface of the adjacent part is suitable for the raceway surface, the washer can be omitted, and the design can be compact. The cylindrical surfaces of the needle roller and the cylindrical roller used for the DF thrust needle roller bearing and the thrust cylindrical roller bearing are The profiled surface reduces edge stress and increases service life.

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