MOLD DISK LOCKING STUDS AND BLOCKS
After the mold disk makes the one-quarter and three-quarter revolutions, the mold slide advances and the mold disk locking studs enter the locking stud blocks which are on the vise. This keeps the disk in position until the slug has been cast or ejected, as the case may be.
On old style machines the bushings are in the disk, and the studs are in the blocks. On all the new machines the studs are in the disk and each bushing and block is made in one piece. The blocks are held to the vise by the screws and dowel pins that pass through the front of the vise and screw into the blocks. The left-hand stud block on the newer models is loose sidewise, which permits the studs to enter the stud blocks with the minimum amount of wear to the parts.
The stud blocks can be renewed by taking the old ones off one at a time and using the remaining block as a guide.
The studs should be kept lubricated with a little graphite and grease. Too much will collect on the mold and get to the matrices.