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When the design should pay attention to what aspects

by:Waxing     2020-05-24
In order to to give full play to the effect of bearing in the machine, in addition to choose the type of match system and types, and the right combination structure design. This needle roller bearing is the same, the needle roller bearing combination design contains the content of the what? The combination of the needle roller bearing shaft bearing structural design includes the structure; The cooperation of bearings and related parts; Bearing lubrication and sealing; Increased and stiffness of the bearing system, and so on, which are the requirements to the policy of or needle roller bearing will not be able to normal work. Besides, there are fixed method about needle roller bearing, if is fixed on both ends, each bearing separation to accept a direction of bearing force, then allow axis operations with a small number of thermal expansion. In formal install needle roller bearing, there should be zero. 25mm- 0. 4 mm axial gap, specific to the gasket or screw self-care. But this method of fixed constraint the two-way movement of needle roller bearing, so commonly used in some homework right temperature change small axis, use the time to consider thermal elongation, and leave the compensation gap between bearing cover and the outer end face. If only a two-way fixed to one end of the needle roller bearing, the other end of the word insisted on swimming, can ensure that bearing elasticity of cent to swimming at ease. The fixed end of the needle roller bearing is mainly composed of single bearing or bearing set hand accept two-way axial force, in order to prevent loose, winding bearing internal scale and to the fixed axis. In the whole structure, use the needle roller bearing for swimming fulcrum, bearing outer ring and bearing frame fixed demand, relying on the swimming between the roller and the ring to make sure that the bearing of elasticity, make the normal work of the bearing.
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