Single seal compression calculation
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A+B+C-(D-required compression amount)=E
Too complex, E+DABC=required compression amount
E is an unknown number, which has not been installed on the shaft sleeve during actual measurement.
The amount of compression = the difference between the distance between the dynamic and static annulus surfaces and the joint surface, that is, the amount of compression = D + E - A - (B + C). In practice, the position of the moving ring (or the value of E) is also determined based on the amount of compression.
To determine the E value, the installation dimensions are generally shown on the drawings. If not, take 1/2-2/3 based on experience!
The E value cannot be treated as unknown, otherwise you will do a lot of useless work! Make simple things complicated!
If you know e, you don’t need to calculate it and just install it!
I don’t quite understand what a is. I hope the master can give me some advice
I don’t quite understand the length of a. I hope the master can give me some advice.
The distance from the end surface of the shaft sleeve to the end surface of the bearing box (the connection surface with the pump cover)
Just don’t get dizzy with the movements of addition, subtraction and subtraction.