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Metric Square Drive?

twostall

Well-known member
Joined
Feb 22, 2009
Messages
63
Location
Kentucky
The machinery I am responsible for is primarily German. This particular unit is of late 50's design, early 80's manufacture. I've been into a half-dozen of these and they're put together like an old Rolls-Royce - every machine is just a little bit different. Lots of hex socket caps and hand-drilled & reamed taper pins.

I have an eccentric (cam) located on a shaft with a 7 x 50mm taper pin, and a square-drive set screw. The square recess measures about 6mm. The major diameter of the screw (as best I can measure) looks to be 16mm. My search is not turning up a bit for this. Previous units I've worked on had a hex socket in this location. Before I purchase and grind down a 1/4" square, does anyone have any insight?
 

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MagnumForce

Well-known member
Joined
Jun 3, 2014
Messages
1,392
Location
Ohio
Could always mill a block, heat treat it and use a crescent wrench on it or bend it into a key and they heat treat it.
 
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