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Re: Key length calculator

From: Arne
Remote Name: 217.210.179.50

Comments

First of all Bill, welcome to post also on the new board here. Look at www.vibinst.org again. /// On the key issue, the ISO Standard 8821 cares for it. In principal: Let each side of the key take care of its own problem. For the shaft: what you remove, fill it back in with the same weight, for the hub, the same applies. The rest is just plain common sense. If you deliver a hub whith disks and balding, make sure it was balanced using a half key, just filling the keyway that you milled in the hub. If you work on the shaft alone, fill the void through a longer key that fills out. /// It happens a lot that I measure the empty end of a keyway and estimate its force through the radius to its centre of gravity and then measure the key sticking out with its own radius to the COG. It can result in a small trim cut on the key. At all times, the allowed residual unbalance must be kept in perspective. If you have severe problems with this issue of keys, watch out for the possible issue of running at resonance - critical speed or foundation resonance. OK, back to the new VI board. Regards Arne

Last changed: October 16, 2007