(A), the main function of the cage: a, separate the rolling elements, so that the work of friction and calorific minimum; b, to maintain the same distance between the rolling elements, the load evenly distributed; c, so separable bearings and internal and external Ring can swing bearing each rolling body does not fall out; d, in the bearing non-bearing area to guide the rolling body. (B), rolling bearing cage can be subdivided into stamping and solid type: a, stamping cage: commonly used steel manufacturing, sometimes with copper. The advantage of such a cage with respect to the metal solid cage is its light weight. Stamping cage occupy the gap between the inner and outer ring bearing small, easy to enter the bearing oil and remain in the cage. According to the code principle, the stamping retainer is written to the code only when it is not used as a standard structure. b, solid cage: made of metal, phenolic resin and plastic. The bearing code specifies these materials. Metallic solid cage for the cage of the high strength and high temperature requirements of the workplace. Solid cages can also be used when guided by a rib. Rib-guided high-speed bearing retainers are often made of a lightweight material, such as light metal or phenolic fabric, to ensure their low inertial forces.
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