Southbend SB1231 Camlock Stud Installation, Camlock Stud Adjustment, Camlock Stud Must Slightly

Mfg. Since 5/10 I N S T R U C T I O N S Model SB1231

Camlock Stud Installation

The camlock studs that are shipped with this chuck may be pre-installed from the factory. If so skip this section and complete Chuck Installation and Removal on Page 4; otherwise, install the camlock studs as outlined below:

1.Oil and thread each cam stud into the chuck until the alignment groove is flush with the chuck surface, as shown in Figure 2.

2.Install and tighten the locking cap screw for each stud, making sure that the camlock studs can slightly rotate back and forth.

Camlock Stud Adjustment

If the camlock studs have been pre-installed at the factory, or if you are installing them for the first time, slight machining differences between the lathe spindle and chuck can cause one or more camlocks to lock at the incorrect location.

If any cam line stops outside of a “V” mark when all of the camlocks have been tightened, remove the chuck and adjust the height of the offending stud one full turn up or down as illustrated below. After all camlocks operate correctly, stamp alignment marks in the chuck and spindle to ensure that the chuck can be re-installed in the same position after being removed.

Camlock Stud

Must Slightly

Rotate Back/Forth

Cap Screw Installed & Tight

Initial Adjustment:

Camlock Stud Alignment Groove is Flush with Chuck Surface

Spindle Line
	CORRECT
	The Camlock Mark
	Stops Between the
	“V” Marks.
Alignment Marks
INCORRECT	INCORRECT
The Camlock Mark	The Camlock Mark
Stops After the	Stops Before the
“V” Marks.	“V” Marks.

Figure 2. Camlock stud installation.

To Correct:	To Correct:
Turn Stud One Turn In	Turn Stud One Turn Out

Figure 3. Camlock stud adjustment.

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