Panther 1350, Instructions/Spare Parts Manual, Page: 49 / 103

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Section 4 SETTINGE & MAINTENANCE
Proper care and maintenance of the machine is most important
factor to increase life and reliability of machine performance.
Followings are the few important settings, which needed attention.
4.1 Head stock
4.1.1 Main spindle bearings
Main spindle is mounted on two precision back to back taper
roller bearings in front wall and one needle roller bearing in rear wall.
During continuous running of the machine spindle, spindle gets heated
and due to thermal expansions, length of the spindle increase. These
bearings arrangement provide compensation of thermal expansion of
spindle.
For the preloading of the main spindle two check nuts are
provided inside the head stock body. First remove head stock cover and
than tighten or loosen the check nuts of main spindle such that the
spindle can be rotate by hand with light drag. Inner check nut is for
preloading and outer check nut is for locking.
Check nut provided on the rear side of the head stock is not for
preloading of bearings. This check nut is used only for retaining spindle
locking bush and other assembly and not for setting purpose.
4.1.2 Taper setting.
Head stock is mounted on lathe bed by 2 bolts provided on front
side and one clamping plate is provided on rear side. To set the head
stock, first slightly loosen two bolts provided on front side and one
clamping plate nut provided at rear side, than adjust setting bolts as per
your requirement and tighten the bolts and nut.