I have been told I need a flexible coupling.
Could someone please explain in what way a flexible coupling is flexible and the difference between a flexible coupling and a torsionally flexible coupling.
Please keep it simple!
ThanksWhat is the difference between a flexible coupling and a torsionally flexible coupling?
a flexible coupling is a ';bendy'; shaft and allows for misalignment of shafts. As it bends it is often (but not always) possible to slot the coupling in when you will be wanting drive, and disconnect it when you are not. Long flexible couplings are much like brake cables, but instead of the inner cable being pulled, it is rotated. They function much like a pipe/cable, but for shaft power, rather than pneumatic power.
A torsionally flexible coupling, Is bit more difficult to explain, but it main purpose is to prevent shock loadings crossing the coupling, they can usually cope with a small amount of misalignment. It's not good to run them with lots of misalignment as they'll usually overheat/deteriorate. They are formed from two metal discs, which are joined by a lump of rubber. When drive is fed to one metal disc, the rubber starts to bend, which exerts a force on the disc, which then outputs torque. In many ways the rubber functions as spring/damper, but instead of being for linear motion, it works for rotary motion.
If you want the jack to be be able to be moved around freely (well within a certain radius) without needing to move the gearbox, you'll be looking at a flexible coupling/shaftWhat is the difference between a flexible coupling and a torsionally flexible coupling?
You do need some form of flexible coupling for this application.
You'll have one of these close by they'll supply all the bits that you need, I'm sure. Look in power transmission%26gt; Couplings.
http://www.eriks.co.uk/
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