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Common types of ball bearing cages
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Common types of ball bearing cages
Ball bearing cages (also known as ball retainers or ball separators) are components in ball bearings that separate the balls, maintain symmetrical radial spacing and, in most cases, hold the bearings together.Get more news about brass ball cage,you can vist our website!
Cages can provide lubrication by acting as a reservoir for oils or by providing a solid film via the cage material itself or a coating on the cage. The designer's selection of the appropriate cage design is critical to achieving the desired bearing life and performance.
There are four basic cage types which are the most common, readily available and will perform well in most applications: J type, W type, RJ type and TW type.
"J type: A two-piece belt consisting of two halves, one assembled from one side and the other from the opposite side. Folding tabs secure the two halves. This type of cage is guided by the balls. The "loose" clinch type provides lower torque. Material is type 302 stainless steel. Brass and carbon steel are also available. These types of cages can operate at low to medium speed. Loose crimp is standard. Tight crimp (JF) is used for higher speeds. Extra loose (JL) is used for low torque applications.
Type "W": One piece steel crown. Used primarily in very small bearings. This type of cage is inner ring guided. Material is type 410 stainless steel. The cage engages over the balls from one side. It has excellent performance in low torque, low speed applications. Generally, the one piece steel ring is not used in high speed applications.
"RJ" Type: This type of cage is suitable for larger bearings (bore diameter over 10mm) with high load carrying capacity. It is a two piece band consisting of two halves, one assembled from one side and the other from the opposite side. The two pieces are riveted together and are strong enough to withstand higher levels of vibration and acceleration. This type of cage is guided by balls. The material is type 302 steel.