Model SB1314 | I N S T R U C T I O N S | Mfg. Since 3/10 |
6.Remove the back plate from the lathe and place it on a workbench.
7.Set the chuck on the back plate, and roughly align the chuck using the alignment set screws.
8.Use a transfer punch to mark the back plate. If a transfer punch is not available, a drill bit of the same size as the mounting holes in the chuck can be used. Lightly tap on the bit, rotate it 90° and tap it again.
9.Center punch the marks. Drill and tap the holes for
10.Clean and stone all mating surfaces until they are perfectly clean and no burrs exist.
11.Install the chuck and snug the
12.Using a 6mm hex wrench, lightly snug all four chuck alignment set screws.
13.Clamp a 1" diameter test blank into the chuck, install a test indicator. Rotate the chuck by hand and measure the chuck concentricity.
14.Based on your readings, adjust the alignment set screws to bring the chuck into final alignment. The typical alignment repeatability for the same diameter workpiece when swapping will be 0.0005". For maximum accuracy, clamp your workpiece in the chuck and realign by tightening or loosening the set screws. If all the set screws are tight, correction of alignment can also be done by loosening one or more set screws.
Note: If the chuck must move 0.001" or less to bring the workpiece into alignment, it is not necessary to loosen the chuck mounting bolts before using the adjustment set screws.
Operation and Safety
•Chuck Key Safety: A chuck key left in the chuck can become a dangerous projectile when the spindle is started. Always remove the chuck key after using it. Develop a habit of not taking your hand off of a chuck key unless it is away from the machine.
•Disconnect Power: Disconnect the lathe from power before installing and removing the chuck or doing any maintenance or adjustments. Accidental lathe startup can cause severe injury or death.
•Secure Clamping: A thrown workpiece may cause severe injury or even death. When swapping the chuck jaw positions, use a torque wrench to
•Chuck Speed Rating: Exceeding the maximum rated speed indicated on the chuck, or using excessive spindle speeds with an unbalanced workpiece, can cause the workpiece to be thrown from the chuck causing a severe impact injury or even death. Always use the appropriate spindle speed for the job.
•Large Chucks: Large chucks are very heavy and difficult to grasp, which can lead to crushed fingers or hands if mishandled. Get assistance when installing or removing large chucks to reduce this risk. Protect your hands and the precision ground ways by using a chuck cradle or piece of plywood over the ways of the lathe when servicing chucks.
•Safe Clearances: Often chuck jaws will protrude past the diameter of the chuck and can contact a coolant nozzle, tooling, tool post, or nearby components. Before starting the spindle, make sure the workpiece and the chuck jaws have adequate clearance by rotating the spindle through its entire range of motion by hand.