Southbend SB1231 specifications Chuck Installation and Removal, Disconnect Lathe from Power

Chuck Installation and Removal

1.DISCONNECT LATHE FROM POWER!

2.Lay a chuck cradle (see Figure 4) 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.

Do not install the chuck without having the camlock cap screws in place or fully tightened. Otherwise, the camlock studs may turn with the camlocks on release, resulting in the chuck being permanently locked onto the spindle.

6.With the help of another person, or with the help of a chuck cradle, align the chuck with the spindle so the studs and camlock bores are aligned correctly, and carefully slide the chuck onto the lathe spindle. Never rest the chuck on its lower studs, as shown in Figure 5, and roll or push the top of the chuck into place on the spindle. This is a bad practice that may damage the studs and camlock bores.

Figure 4. Wooden chuck support cradle.

3.Clean away debris and oily substances from the mating surfaces of the spindle and the chuck to ensure the best fit possible.

4.Inspect and make sure that all camlock studs are undamaged, clean, and lightly oiled.

5.Make sure that the camlock stud retaining cap screws are snug, but still allow the studs to be rotated back and forth slightly by hand. This free-play is critical to ensure that the camlocks tighten and lock with the studs completely, and will release without binding.

—If a problem is found with the camlock locking or release, remove the offending stud and clean it with mineral spirits. Compare it with a good stud for any inconsistencies, and replace it if a problem is found. Inspect the bore, cap screw, seat depth, and threads with others that are known to be correct. Chase all threads, and remove any burrs or dings in the seat. Dry out the bore with compressed air and lightly re-lubricate with a drop or two of machine oil or way oil.

Figure 5.Typical alignment of studs and camlock

bores.

Before turning the lathe ON, make sure the chuck key is removed! A thrown chuck key can cause serious injury or death to the operator or bystanders.