CHESTER Centurion 500, Operation Manual

Page: 12 / 46

Cross Feeding
Imperial Metric
Hand feeding can be accomplished by operating hand wheel 24, where as automatic feeding can be engaged
as follows.
Engage half nut lever 26 in the engaged position, pull out the longitudinal-cross feed clutch handle 22, you can now
cross automatic feed.
By changing handle 2 and gear A, B, C, D, 12 kinds of automatic can be obtained as above.
Thread Cutting
Run the main spindle at a low speed, engage lever 1 in the left position. Now refer to the chart for the correct
set up for the thread that you wish to cut, adjust gearshift lever 2 to the appropriate position. Now thread cutting can
begin. Altering the set up ie by changing the positions of Lever 2 and gears A, B, C, and D can cut different threads.
Tailstock
The tailstock moves up and down the bed freely and can be locked into place via lock lever 17. The tailstock
barrel position can be adjusted by turning the tail stock hand wheel 15, and locked by lever 14.
Before leaving the factory the tailstock is aligned with the tailstock centre and the spindle centre. If you need to use
the tailstock centre to cut small tapers, you should loosen the screw, adjust the two reset screws (16) to make the
deviation between spindle centre and tailstock centre.
When finished, follow the above instructions to reset the tailstock to its original position. When the tailstock is used
to external cut and you get a taper, adjust the reset screw 16 as above to eliminate the taper.