Hi,

Does anyone know the correct size of the woodfruff key that locks the bull gear to the spindle?

I'm a child of the metric system and when i measure it with guessameters I don't seem to fall on a standard size ("standard" as in what I can fond on ebay)

Thanks in advance.

Adam

Hi There, 

The woodruff key used in the 9 Inch spindle to bull gear isn't exactly
a "standard" key.  Having said that, there is a standard key that is
very close and will work. 







Here are two keys.  The one for the 9 Inch is on the right (or on top as in the last
pic).  The other is a standard key # 606 (that is, 3/16" wide and 3/4" long).  The
606 will work just fine or you could get a #607 and file it to match. 

There is an exact match on McMaster-Carr Supply Co.'s website.  They call it a 
"High Profile #9" woodruff key and their part number  is: 90049A418.  They are
a bit pricey at $6.48 for 5 (plus shipping).

Good Luck!
-Blue Chips-
Webb

Awsome thanks, McMaster don't really delliver to my country, but luckily the #606 is common enough.

I had a spare headstock that I took the bull gear from, its from an older machine that had the top mounted oilers, imagine my dissapointment when I discovered it had a square key.

Hi There,

I didn't know you were not based in USA.  McMaster-Carr is one of the "go-to"
supply houses for us.  There are other suppliers of "High Profile" woodruff keys
out there.  You just have to check around.

Good Luck!
-Blue Chips-
Webb

No problem, I should have mentiioned I'm in the UK.

It doesnt look like they are easily available for the hobbyist here, but I should have a standard size one in my hand in a couple of days so I'm am back in business, thanks again.