Ceramic Shear Key
Ceramic Shear Key
(OP)
I have an application that currently uses a brass shear key. It is functional, however I would like to use a material that has a high strength for start up rotational loading but under a high impact force will fail faster than the brass. Any material recomendations would be greatly appreciated.
(not sure if this is the right forum to discuss this, but everyone on here seems to have a virtual infinite plethora of resources)
(not sure if this is the right forum to discuss this, but everyone on here seems to have a virtual infinite plethora of resources)






RE: Ceramic Shear Key
Heckler
Sr. Mechanical Engineer
SWx 2007 SP 3.0 & Pro/E 2001
XP Pro SP2.0 P4 3.6 GHz, 1GB RAM
NVIDIA Quadro FX 1400
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_`\(,_
(_)/ (_)
(In reference to David Beckham) "He can't kick with his left foot, he can't tackle, he can't head the ball and he doesn't score many goals. Apart from that, he's all right." -- George Best
RE: Ceramic Shear Key
RE: Ceramic Shear Key
RE: Ceramic Shear Key
Heckler
Sr. Mechanical Engineer
SWx 2007 SP 3.0 & Pro/E 2001
XP Pro SP2.0 P4 3.6 GHz, 1GB RAM
NVIDIA Quadro FX 1400
o
_`\(,_
(_)/ (_)
(In reference to David Beckham) "He can't kick with his left foot, he can't tackle, he can't head the ball and he doesn't score many goals. Apart from that, he's all right." -- George Best
RE: Ceramic Shear Key
RE: Ceramic Shear Key
How is your shear key arranged, Is it a beam or a conventional key (inside a hub)? I have done very well with cast iron beams tied in with a bronze friction clutch activated by disk springs compressed to a known height. Normal loads drive through the friction cluch, small overloads are taken by the Cast Iron beam larger loads shear the beam and slip the clutch. Unless the load is very smooth trying to take all the load through the key results in fatigue failures or you have to have a very large overload in order to break the key