What constitutes Rolling-Wenzhou Bearing wholesale

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Bearing Knowledge

What constitutes Rolling

点击数：4917 日期：2014/4/4

Rolling is a shaft and sliding friction between the shaft seat operation into rolling friction , thereby reducing the friction loss of a precision mechanical components. Rolling general from the inner ring , outer ring, rolling elements and cage composed of four parts , the role of the inner ring and the shaft is cooperating and rotates with the shaft ; outer action is compatible with the bearing , play a supportive role ; rolling is through holder in a uniform distribution of the rolling elements between the inner ring and the outer ring , and its shape directly influence the size and number of performance and service life of rolling bearings ; rolling element cage uniform distribution can prevent the rolling elements off, the rolling element guide rotating lubricant . Generally by the inner ring, outer ring, rolling elements , cage composition, accessories and suffix is generally on bearings with special requirements , such as : N outer cylindrical surface with snap groove NR bearing outer ring with snap groove and snap ring There are two positioning grooves ( 180 ° ) on the outer N2 PP bearing ( bearing roller bearings, cam follower bearings ) two sides with contact seals RS bearings ( needle bearing ) side with a synthetic rubber or polyurethane -contact seals Side with the pro -RS1 bearing steel synthetic rubber contact seal -2RS1 bearing two sides have ES1 Seal -RS bearings ( needle bearings ) with RS seals on both sides Side with the pro -RZ bearing steel friction synthetic rubber seals RZ -2RZ bearing with seals on both sides X 1. The basic dimensions , as amended in accordance with ISO standards 2 cylindrical rolling surface ( bearing roller bearings, cam follower bearings ) -Z bearing side with dust cover ( non- friction seals ) Z -2Z bearings on both sides with a dust cover -ZN dust cover located on the opposite side stopper groove Z -2ZN bearings on both sides with a dust cover , with snap groove on the outer ring Rolling due to different purposes and working conditions , many changes in its structure , but the basic structure is ( balls or rollers ) from the inner ring, outer ring, rolling elements and cage four parts. ( 1 ) the inner ring ( also known as the inner sleeve or inner ring ) . Normally fixed to the journal , the inner race rotates together with the shaft . Inner or outer surface of a ball for ball rolling groove , the groove or called inner raceway . ( 2 ) the outer ring ( also known as a jacket or outer ) . Usually mounted on the bearing housing or machine , rolling from supporting role . The outer surface of the circle there are balls or rollers for rolling groove called the groove or the inner race . ( 3 ) rolling elements ( balls or rollers ) . Each bearing is equipped with a group or several groups of rolling elements , mounted between the inner and outer rings , each rolling pass from the force. The rolling body is a load bearing part , the shape , size and number determines the load bearing capacity to withstand the high speed performance. ( 4 ) cage ( also known as cage or isolator ) . The rolling element bearings evenly spaced , so that each rolling member rolling normally between inner and outer rings . In addition , the cage has guided rolling motion , improve internal bearing lubrication conditions , and to prevent rolling off and so on. In the thrust bearing , and the shaft with ferrule called shaft washer , and bearing or machine housing with ferrule box office , shaft ring and seat ring gasket collectively . In addition to these four components , as well as a variety of different structures bearing their other parts match . For example , rivets, dust cover , seals, washers , retaining rings and tight sets and so on.

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