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Bmyers
10-20-2007, 07:11 PM
I have a Brown and Sharp gear cutter and I cannot decipher the the info on it.
It reads:
JAN. 30-19-32P
50 into 8T
D+f .067
can any tell me what cutter I have?

lazlo
10-20-2007, 07:27 PM
Hi,

I think some of the numbers may be worn -- that number of teeth doesn't match a proper gear cutter.

It's obviously a 32 DP (diametral pitch) gear cutter, but the cutter number tells you the range of teeth it will cut:

Cutter Number Cuts Gear from
1.......................... 135 teeth to rack
2............................55-134
3............................35-54
4............................26-34
5............................21-25
6............................17-20
7............................14-16
8............................12-13

I'm looking at a brand-new Brown & Sharpe cutter, and the designation goes:

No. 2 - 16DP 55 TO 134T D+F .1348"

Notice that the cutter number and the number of teeth match the table above.

Hope that helps,

Robert

lazlo
10-21-2007, 03:53 PM
You know, I just realized that you've got a gear hobber, not an involute gear cutter.

The B&S gear hobs have a date stamp, but the B&S gear cutters don't.

Now you just need a hobbing machine ;)

Bmyers
10-21-2007, 03:57 PM
thanks for the info. I think I will just buy the cutters I need. The last thing I need now is a hob. The cutter came in a bunch of cutters I bought at HGR last trip there !
What does the D+F mean?

John Stevenson
10-21-2007, 04:07 PM
What does the D+F mean?

D is depth, f is clearance so D+f = whole depth, in other words the amount you feed the cutter in to get a finished gear.

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