11
damage)
and screw in insert using the optional accessory spanner or a 1 1/2” AF spanner. Care
needs to be taken that the outer male insert thread is engaged properly at the start with the
female body thread. Screw insert fully into body recess. This is important to ensure running. Refer
to FIGURE 2.
CHUCK INSERT SPANNER:
An optional, accessory insert spanner can be purchased to
help wind the inserts into the chuck to remove from the
lathe spindle. (Code 23014). See back of manual for
further information.
The Insert can now be
locked to chuck body by
means of the M6 x 6
grubscrew provided. Make
sure that the fibre washer
is inserted first to act as a
buffer between the
grubscrew and insert thread.
DO NOT SCREW IN GRUBSCREW BEFORE INSERT IS
SCREWED HOME IN CHUCK.
IMPORTANT:
LH THREAD INSERTS MUST BE LOCKED
TO CHUCK BODY OR CHUCK BODY COULD UNWIND
FROM INSERT.
FITTING CHUCK TO LATHE
Correct fitting of chuck to lathe spindle is important to
ensure accuracy. The chuck body must
contact an accurate shoulder on the lathe spindle or bearings (as on Teknatool Nova 3000) to
ensure chuck will run true.
There can be a wide variety of lathe spindle thread and spigot dimensions even within the same
thread size. The internal thread size is kept to standard tolerances. The internal thread length and
spigots of Nova inserts are manufactured to cover as wide a range of variations as possible. This
will mean that in most situations you should be able to get a satisfactory match.
CHECK THE FOLLOWING:
Although the insert may screw on part way it may not contact properly with spindle spigot - a
spacer or some further modification of the insert may be necessary. This would be the
responsibility of the chuck user. Make sure the chuck is screwed to lathe thread properly -a good
check is to see whether it screws home on the spindle the same as another lathe fixture such as
a faceplate.
POOR FIT OF CHUCK TO LATHE SPINDLE CREATES A SERIOUS HAZARD WHERE
CHUCK COULD DISLODGE FROM LATHE. DO NOT ATTEMPT TO USE CHUCK UNLESS
THE CHUCK US CORRECTLY FITTED TO LATHE SPINDLE.
