“Okay. I’ve got two questions about wheel bearings that you may not think are related, but they actually are.
The first question is from Steve and he is wondering what is bearing preload, Is it the same as in play? And also we have another question and he’s wondering, can a bad alignment cause a wheel bearing to play out prematurely?
Well, actually the answer comes down to the word. Preload. Preload is not the same as in play. Preload is actually aligning the inner and outer races together and loading the bearings. So the rolling elements make proper contact, with the two surfaces. This usually involves a nut and an axle that clamp the two together and set the load pass. When properly torqued down the axle nut will set the ball-bearings or other rolling elements in relationship to the inner and outer races. This is where the loads are carried.
So if this is not properly set, you’re going to have issues with the bearings wearing out too soon or having the wrong angular contact pattern. So how does this apply to our second question? How can a battle lineman angle cause a bearing to fail prematurely?
Well, we’re looking at the load path through the bearing. Just imagine a bearing has too much Canberra. Well, the load path changes on the spearing and where the bearings make contact and where the loads are carried. If you have too much toe and the vehicle is going down the road. Well, that changes the loads inside the Berg too. So keep this in mind. If you’re replacing a wheel bearing, you might also want to check the alignment.”
This video is sponsored by GMB
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March 04, 2021 at 04:05AM
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GMB - Wheel Bearing Preload And Load Pass - Brake & Front End
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