Southbend SB1231 specifications To remove the chuck, Camlock Stud Adjustment on

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Mfg. Since 5/10

I N S T R U C T I O N S

Model SB1231

7.Tighten camlocks in a star pattern to draw the chuck in evenly and reduce the chance of misalignment. Make sure to tighten camlocks in an incremental manner to ensure that one camlock does not get fully tightened before the others (i.e., snug the camlocks on the first pass, then moderately tighten on the next pass, then fully tighten on the third pass).

As you tighten the camlocks, the chuck will seat with the spindle nose. When fully tightened, the cam line will fall between the two "V" marks on the spindle nose, as shown in Figure 6.

Cam line is between the "V" marks

Figure 6. Camlock is fully tightened with the camlock

line positioned between the "V" marks.

If the cam is fully tightened, but the cam line is positioned outside of the “V” marks, remove the chuck and adjust the height of the offending camlock stud, as outlined in

Camlock Stud Adjustment on Page 3.

8.When installation is complete and you are satisfied with the results, lightly stamp a set of alignment marks on the chuck and spindle.

Note: Alignment marks ensure that the chuck can be re-installed in the correct position every time for consistent chuck and spindle alignment. It also allows for the same camlocks and studs to operate together for consistent locking and unlocking.

To remove the chuck:

1.DISCONNECT LATHE FROM POWER!

2.Lay a chuck cradle or plywood under the chuck and over the bedway to protect the precision ground surfaces from damage and reduce the risk of fingers getting pinched.

PINCH HAZARD! Protect your hands and the precision ground bedways with plywood or a chuck cradle when removing the lathe chuck! The heavy weight of a falling chuck can cause serious injury.

3.Loosen the camlocks by turning the key counterclockwise approximately one-third of a turn until the mark on the camlock aligns with the spindle mark on the spindle nose (see Figure 7). If the stud does not freely release from the camlock, wiggle the camlock until it stud releases.

Note: Camlocks can become very tight. A cheater pipe may be used to add leverage when loosening.

Cam line is

aligned with the spindle mark

Figure 7. Camlock is fully loosened when the camlock

line is aligned with the spindle mark.

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Contents Introduction SpecificationsInstruction Sheet Mfg. Since 5/10 SafetyCamlock Stud Adjustment Camlock Stud InstallationCamlock Stud Must Slightly Camlock Stud Alignment Groove is Flush with Chuck SurfaceDisconnect Lathe from Power Chuck Installation and RemovalTo remove the chuck Camlock Stud Adjustment onTo clamp a workpiece in the chuck Install a center in the tailstockOperation Daily Align and re-install the chuckCheck/correct loose mounting bolts Back the jaws out of the chuck Remove the four set screwsParts Diagram TroubleshootingParts List