Southbend South Bend 16 SPEED GEARHEAD LATHE SB1053 - Manual (Page 40)

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For Machines Mfg. Since 3/11 16-Speed Gearhead Lathe O P E R A T I O N
Figure 43. 4-jaw tightening sequence.
1
2
3
4
Workpiece
Centerpoint
5. Tighten each jaw in small increments. After
you have adjusted the first jaw, continue
tightening in an opposing sequence, as
shown in Figure 43.
6. After the workpiece is held in place by
the jaws, turn the chuck by hand and pay
attention to the workpiece alignment.
— If the workpiece is not correctly aligned
for your operation as you turn the chuck,
make fine adjustments by slightly
loosening one jaw and tightening the
opposing jaw until the workpiece is
correctly aligned (see Figure 44 for an
example).
Figure 44. Example photo of non-cylindrical workpiece
correctly mounted on the 4-jaw chuck.
Faceplate
Refer to the Chuck Installation (Page 35) and
Chuck Removal (Page 36) instructions to
install or remove the faceplate.
The 12" faceplate included with your lathe offers
a wide range of uses, including machining non-
concentric workpieces, straight turning between
centers, off-center turning, and boring.
The tools needed for mounting a workpiece will
vary depending on the type of setup you have.
Machining non-concentric workpieces at a
high speed could cause the workpiece to be
thrown from the spindle with deadly force at
the operator or bystanders. To reduce this
risk, only machine non-concentric workpieces
at low speeds and clamp counter-weights to
the faceplate to balance it.
Failure to properly secure a workpiece to the
faceplate could cause the workpiece to be
thrown from the lathe with deadly force at the
operator or bystanders. Use a minimum of
THREE independent clamping devices to hold
the workpiece onto the faceplate.