Southbend SB1231 Lathe User Manual


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6. Withthehelpofanotherperson,orwiththe
helpofachuckcradle,alignthechuckwith
thespindlesothestudsandcamlockbores
arealignedcorrectly,andcarefullyslidethe
chuckontothelathespindle.Neverrestthe
chuckonitslowerstuds,asshowninFigure
5,androllorpushthetopofthechuckinto
placeonthespindle.Thisisabadpractice
thatmaydamagethestudsandcamlock
bores.
Do not install the chuck without having
the camlock cap screws in place or fully
tightened. Otherwise, the camlock studs may
turn with the camlocks on release, resulting in
the chuck being permanently locked onto the
spindle.
Figure 5. Typical alignment of studs and camlock
bores.
3. Cleanawaydebrisandoilysubstancesfrom
thematingsurfacesofthespindleandthe
chucktoensurethebestfitpossible.
4. Inspectandmakesurethatallcamlock
studsareundamaged,clean,andlightly
oiled.
5. Makesurethatthecamlockstudretaining
capscrewsaresnug,butstillallowthestuds
toberotatedbackandforthslightlybyhand.
Thisfree-playiscriticaltoensurethatthe
camlockstightenandlockwiththestuds
completely,andwillreleasewithoutbinding.
—Ifaproblemisfoundwiththecamlock
lockingorrelease,removetheoffending
studandcleanitwithmineralspirits.
Compareitwithagoodstudforany
inconsistencies,andreplaceitifaproblem
isfound.Inspectthebore,capscrew,seat
depth,andthreadswithothersthatare
knowntobecorrect.Chaseallthreads,
andremoveanyburrsordingsintheseat.
Dryouttheborewithcompressedairand
lightly re-lubricate with a drop or two of
machine oil or way oil.
Figure 4. Wooden chuck support cradle.
Before turning the lathe
ON, make sure the chuck
key is removed! A thrown
chuck key can cause
serious injury or death to
the operator or bystanders.
1. DISCONNECTLATHEFROMPOWER!
2. Layachuckcradle(seeFigure 4) or
plywoodunderthechuckandoverthe
bedwaytoprotecttheprecisionground
surfacesfromdamageandreducetheriskof
fingersgettingpinched.
Chuck Installation and Removal
INCORRECTCORRECT
-4-
Mfg.Since5/10
Model SB1231
INSTRUCTIONS
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