Cut my first taper with the taper attachment.

[John Evans]

Was trying to figure out what spindle taper my SB heavy 10 has, neither my #4 or 5 Morse would fit right. Well there is such a thing a a 4-1/2 Morse. Went digging around in my tool dealer friends stock and found a 4-1/2 to 5C nose piece,brought it home and that was the correct item. decided I needed a dead center to fit that taper. Used a collet in the nose piece with a 3/4 piece of rod in it to hold in the chuck. [sorry no pics of all this] Used a DI mounted on the cross slide to adjust the taper attachment until the DI showed 0 traveresed along the nose piece.
Had some 4140PH bar that I thought would be good to use . To get a chip in that &#$^(#$^(($ stuff takes a fast feed and heavy cut other wise you get nasty strings!! Poor old heavy 10 could not do it ,so dealt with strings while roughing to size . Lighter cuts doing the taper went fine. Love my taper atachment, will deal with the SB's limitations power wise. Used my 12" gear head to power part off the bar to lenght with insert parting tool ,no drama there!
My dealer friend gave me the 5 C nose piece so my next project is to make a draw bar for a hand operated collet closer. Material on order for that and I will post some pictuers of that deal.

[wlw-19958]

Hi There,

I'm glad you found an adapter that fits your lathe but
the SBL Heavy Ten (10L) spindle taper is not Morse Taper
No: 4-1/2. SBL used a proprietary taper. The taper per foot
is .602" and the gauge line diameter is 1.629" (as listed on
SBL spec sheet 7324).

Morse Taper No: 4-1/2 is .624" TPF and gauge line diameter
is 1.500".

Now, if your lathe is a 10R Heavy Ten, the spindle taper is Morse
Taper No: 4.




Good Luck!
-Blue Chips-
Webb

[John Evans]

Well Webb that is interesting!!! I guess I got real lucky digging through my friends stock. What ever the taper is both items blue perfectly.

[wlw-19958]

Hi There,

I did say I was glad you found an adapter that fits.
SBL tapers, being proprietary, are often confused.
I run into a lot of people that think their Heavy Ten
lathes have a MT5 taper (until they try to fit MT5
tooling into their spindles).

Now SBL did take "Special Orders" and build lathes
to the customer's specifications. Usually, this was
just a customer specified color but a specially ordered
spindle was possible. If a lathe had a "Special Ordered"
feature, the code on the lathe bed would be stamped
to reflect it. IIRC, the suffix code of your lathe is "RKL."
If your lathe had a special ordered feature, the suffix
code would be "RKX" (the "X" denoting a "Special Order").

Of course, SBL was run by people and people are fallible.
To be sure, you should get a copy of the build card for
your lathe. SBL/Grizzly has the records and will provide
a copy of your build card (I believe they charge $25 for
this service).

Good Luck!
-Blue Chips-
Webb

[SteveHGraham]

Congratulations anyway!