Jet BDB-919, Operating Instructions And Parts Manual

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10.0 Lathe Accessories
10.1 Three jaw universal lathe chuck
Using this universal chuck (Figure 21), round,
triangular, square, hexagonal, octagonal, and
twelve-cornered stock may be clamped.
Note: New lathes have very tight fitting jaws. This is
necessary to ensure accurate clamping and long
service life. With repeated opening and closing, the
jaws adjust automatically and their operation
becomes progressively smoother.
10.2 Four jaw independent lathe
chuck
This special chuck (Figure 22) has four
independently adjustable chuck jaws. These permit
the holding of asymmetrical pieces and enable the
accurate set-up of cylindrical pieces.
10.3 Drill chuck (optional)
Use the drill chuck to hold centering drills and twist
drills in the tailstock (Figure 23).
10.4 Morse taper arbor (optional)
An arbor is necessary for mounting the drill chuck in
the tailstock. It has a No. 2 Morse Taper (Figure 23).
10.5 Live center (optional)
The live center is mounted in ball bearings (Figure
24). Its use is highly recommended for turning at
speeds in excess of 600 RPM.
Figure 24
Figure 21
Figure 22
Figure 23