Retention knobs - CNCzone.com-The Largest Machinist Community on the net!

freeflyer · #1 07-21-2009, 07:54 PM

I just recieved my sharp 2412. I'm trying to find out if the manual has a misprint on the retention knob print, as it seems to be an uncommon size. The dia. between the flange and the knob on my print says it's 9.8mm or ~.386". But the common size is .490". Can someone with a 2412 confirm the retention knob size.

Thanks for the help,
Michael

dcoupar · #2 07-22-2009, 11:06 AM

Everything I have on the 2412 specifies a Valenite PT-475 pullstud. See attached .jpg.

Trent Steel · #3 08-09-2009, 09:32 PM

0.392 is actually fairly common. It's an adaptation of a BT40 pull stud but with the 5/8-11 thread to fit CAT40s.

However, I think you may be right that the 2412 uses the .490 size. What did Sharp say about this?

krfrea · #4 09-14-2009, 10:59 AM

I have been using the .490 for 2 years now with no problems at all.

freeflyer · #5 09-17-2009, 10:06 AM

It is the .490. Thanks everyone.

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