In Mechanical Engineering What Is Standard Procedure to Attach Shaft to Bearing?
I’m a physicist trying to gain a little experience with mechanical systems. The concept of a rotating shaft (rotor) is symple in theory, but in practice i dont understand how are the mechanical parts designed and coupled to each other. Are they welded? Glued?
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Categories: Mechanical Engineering Attach, Bearing, Engineering, Mechanical, Procedure, Shaft, Standard
This is usually done with a press-fit. A press-fit means the shaft is actually slightly larger than the inner diameter of the bearing (usually by about 0.0005 to 0.001 inches).
An arbor press can force the bearing onto the shaft, and the normal force caused by compressing the shaft material generates a very large amount of static friction between the two pieces, ensuring no slippage.
Since the bearing race is usually hardened steel, it is safest if the shaft is made of a softer metal, such as aluminum or mild steel.
You have not specified what type of bearing you are talking about. Different types of bearings demand different types of fitment. Kindly learn more about bearings and come back for a more fruitful discussion. Regards,
In the case of a sleeve or journal bearing, the shaft actually is set in the lower half of the bearing and the upper half is then placed over it and the bearing cap is bolted down to secure the bearing around the shaft.
In the case of a bushing type bearing, the shaft it typically just slipped into the bearing.
This might help: http://en.wikipedia.org/wiki/Bearing_(me…
generally either a press fit or heat/cool to fit.
this is years of maintenance experience, cause engineers rarely care/see/know the how of it
Put the shaft through the hole. If the bearing must be secured to the shaft I would have a spline shaft going through a spline hole or use a press fit by heating and cooling. This is all going to depend on the type of bearing you are using.