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CSS System
This lathe is equipped with a CSS (Constant Surface
Speed) system (Figure 27) that gives consistent
fi
nishes between surfaces with different diameters.
To install a chuck :
1. Disconnect lathe from POWER !
2. Place a piece of plywood across the lathe ways
and position it just under the chuck.
3. Place the chuck on the cradle.
4. Make sure the chuck taper and spindle taper
mating surfaces are perfectly clean.
5. Inspect and make sure that all camlock studs are
undamaged, are clean and lightly oiled, and that
the camlock stud cap screws are in place and
snug.
6. If equipped, align the chuck-to-spindle timing
marks ( Figure 29 ), and slide the chuck onto the
spindle.
Section 3 : Operation
Figure 27. CSS System.
Spindle RPM Readout
CSS Switch
Spindle Speed dial
Figure 28. Camlock loosened with the
cam line aligned with the datum line.
Figure 29. Chuck timing marks aligned.
Figure 30. Cam and lines.
If the CSSSS switch is in the ON position, the spindle
speed automatically changes with the position of the
cross slide. For example, during facing operations, as
the tool bit moves toward the center of the workpiece,
the spindle speed increases to maintain a constant
surface speed during cutting as diameter decreases.
As a result of this automatic spindle speed control,
surface
fi
nishes are consistent, tooling lasts longer,
and fewer workpieces will be lost from mistakes.
Another bene
fi
t derived from the CSSSS feature
is that from reduced machine shutdown and less
lever shifting cycles, shorter machining time will be
achieved which can mean increased productivity.
Note: When the CSSSS switch is in the ON position,
the spindle RPRPM can be adjusted with the spindle
speed dial.
When the CSSSS switch is in the OFF position, the
cross slide position has no effect on spindle speed.
The spindle speed is only adjusted with the spindle
speed dial.
Chuck
This lathe is shipped with the 3-jaw chuck installed.
This is a scroll-type chuck, meaning that all three
jaws move in unison when adjusted.
The included 4-jaw chuck features independent jaws,
which are used for square or unevenly-shaped stock.
If neither chuck can hold your workpiece, the cast-iron
faceplate has slots for T-bolts that hold standard or
custom clamping hardware. With the correct clamping
hardware, this faceplate will hold non-cylindrical parts
such as castings.
The chucks and faceplate have a D-6 camlock mount.
A chuck key is used to turn the locking cams ( Figure
28 ) to secure / release the chuck / faceplate.
7. Turn a camlock with the chuck key until the cam
line falls between the "V" marks shown in Figure
30.
