Speed Selection; Turning Between Centres - Jet JWL-1840EVS Mode D'emploi

Parting tool (D, Fig 16), used to cut directly into the
material, or to make a cut off. Also used for scraping and to
set diameters.

6.3 Speed selection

Use low speeds for roughing and for large diameter work. If
vibrations occur, stop the machine and correct the cause.
See speed recommendations.
Speed recommendations
Workpiece
Roughing
Diameter
RPM
mm
< 50 1500
50-100 700
100-150 500
150-200 370
200-250 300
250-300 250
300-350
220
350-400 180

6.4 Turning between centres

With a ruler locate and mark the centre on each end.
Put a dimple in each end of the shock. Extremely hard
woods may require kerfs cut into the spur drive end of stock
(see Fig 19).
Fig 18
General
Finishing
Cutting
RPM
RPM
3200 3200
1600 2500
1100 1600
800 1200
650 1000
500 800
450 700
400 600
The spur drive centre locks into the spindle taper and can
be removed with the knockout rod (Fig 20).
The live centre locks into the tail stock taper and can be
removed by rotating the handwheel counter clockwise (Fig
21).
To screw off the cone (R, Fig 22) the life centre must be
locked against rotation with the supplied pin (S).
Fig 19
Fig 20
Fig 21