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Axel Diameter?

Axel Diameter?

Axel Diameter?

(OP)
How does one go about calculating what the best diameter axel would be for a givin application? An axel too small with bend and de-shape but an axel to big will have too much rotational inertia?

Thanks,
Brendan

RE: Axel Diameter?

What else do you want to know?  You've listed some of the factors to consider.  Make a decision based on engineering judgement.

RE: Axel Diameter?

I think in most cases, the rotational inertia would not be a major factor.

You might also consider vibration of the shaft, whirring motion, fatigue, how it is to be attached, cost and drag of bearings, etc.

RE: Axel Diameter?

YOu would also want to give careful consideration to any shock loading the axle would expect to see.

rmw

RE: Axel Diameter?

And unsupported length.

RE: Axel Diameter?

If you think inertia is going to be problem you should include tubular shafts in your quest.

RE: Axel Diameter?

The ASME and Westinghouse shaft codes are often used to determine what diameter is required to keep stresses below a specified level, with a particular factor of safety. These codes can be found in many engineering text books. In some applications, torsional and bending deflections will also be an important consideration.

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