Bearing retainer, rolling ball bearing and motor
A technology for bearing cages and rolling ball bearings, applied to bearing elements, shafts, bearings, shafts, etc., can solve the problems of uncompact sealing structure, oil seal easy to fall off, and normal operation of the motor, so as to achieve compact structure, avoid easy falling off, shorten The effect of length
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Example Embodiment
[0035] Example 1
[0036] In this embodiment, a bearing cage is provided, such as Figure 1-Figure 5 As shown, the cage 10 has a support portion 11 along its axial side, and the support portion 11 is covered with a sealing body 12 , and the sealing body 12 is used for sealing the inner ring 21 and the inner ring 21 of the bearing 20 . In the gap between the outer rings 22 , the sealing body 12 is provided with a shaft seal installation hole 121 , and the shaft seal installation hole 121 is coaxially disposed with the cage 10 .
[0037] Optionally, the sealing body may be rubber.
[0038] Preferably, an annular spring 50 is embedded in the sealing body 12 , and the annular spring 50 is coaxially arranged with the shaft seal installation hole 121 and is located at the position of the shaft seal installation hole 121 to ensure that the shaft seal installation hole 121 is connected to the shaft seal installation hole 121 . Sealed shaft surfaces fit together.
[0039]Specificall...
Example Embodiment
[0047] Example 2
[0048] The present invention provides a rolling ball bearing, including the bearing cage described in Embodiment 1.
[0049] Specifically, as image 3 and Figure 5 As shown, the rolling ball bearing further includes: an inner ring 21; a ball rolling body 23, the cage 10 is provided with a plurality of pockets c along its circumferential direction, and each pocket c is provided with a ball rolling body 23 ; Outer ring 22, coaxially sleeved on said inner ring 21, an annular gap is formed between said outer ring 22 and said inner ring 21, said annular gap is provided with a plurality of uniformly arranged along its circumferential direction The ball rolling body 23, the cage 10 is arranged in the annular gap.
[0050] Further, the outer surface of the inner ring 21 is provided with a first annular sealing groove 211 coaxial with it, and the inner ring sealing portion 122 is sealingly embedded in the first annular sealing groove 211; The outer circular surf...
Example Embodiment
[0053] Example 3
[0054] The present invention provides a motor, including the rolling ball bearing described in Embodiment 2.
[0055] like figure 2 As shown, the motor further includes: a machine base 1, the front end of which is provided with a bearing shoulder c; a motor shaft 2, which is rotatably mounted on the machine base 1 through the rolling ball bearing 3, and all the The end face sealing portion 124 on the bearing cage is in sealing fit with the shoulder c, and the shaft sealing mounting hole 121 is in sealing fit with the motor shaft 2 .
[0056] by the formula:
[0057]
[0058]
[0059] Among them, RA—represents the thermal resistance per unit area, δ—represents the thickness of the thermally conductive material, λ—represents the thermal conductivity (thermal conductivity), φ—represents the heat flow through a given area A per unit time, θ—represents the two end temperature difference.
[0060] From the above formulas (1) and (2), it can be seen that...
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