Is it common to obtain 6mm x 6 mm keys or 6 mm x 8 mm keys?
An internet pages suggests it should be 6 x 6 but a shaft minus the key seems to suggest 6 x 8 would fit better. The 8 mm being the height of the key into the shaft and gear the 6 mm being the width.
Just wondering if a half reasonable engineering store would carry these.
All the keys I have are imperial from a shop shutdown and although I could machine one down thats sure messy.
Cheers
Adrian
Unless it's a gib head key you don't really want it to be a tight fit radially. If it is you may have problems getting the pulley and shaft apart again..
Any reasonable engineering store will carry them. It's only worth grinding down a 1/4" key if it's after lunchtime on a Saturday. DAMHIKT
Mark Rand RTFM
One clarification: The first number is width, the second heigt. All keys are either same height and width OR height smaller than width. So an 6 x 8 doesn't exist (under normal circumstances, before $someOne raises his hand).
You want a 6 x 6.
Nick
Standard is
6 x 6 8 x 7 10 x 8-- Regards,
John Stevenson Nottingham, England.
Visit the new Model Engineering adverts page at:-
This is my understanding too. I don't think I've ever seen a key which is taller than it is broad. I have a 3/8" x 1/4" taper key sitting on my desk which I removed from a machine a few months ago. Its proportions seem typical.
Best wishes,
Chris
OK 6 x 6 it is
Adrian
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