Eccentric Locating Cam Buttons

Classic Control - Lathe Operator's Manual

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Bolt-on turrets have eccentric locating cam buttons that let you finely align your ID tool holders to the spindle centerline.

Mount the tool holder to the turret and align the tool holder to the spindle in the X-axis. Measure the alignment in the Y-axis. If necessary remove the tool holder and use a narrow tool in the cam button hole, to rotate the eccentric to correct misalignment.

This table gives the result for specific positions of the cam button.

  Rotation (degrees) Result
0 no change
15 0.0018" (0.046 mm)
30 0.0035" (0.089 mm)
45 0.0050" (0.127 mm)
60 0.0060" (0.152 mm)
75 0.0067" (0.170 mm)
90 0.0070" (0.178 mm)

Be aware: Many service and repair procedures should be done only by authorized personnel. The service technicians at your Haas Factory Outlet (HFO) have the training, experience, and are certified to do these tasks safely and correctly. You should not do machine repair or service procedures unless you are qualified and knowledgeable about the processes.

Danger: Some service procedures can be dangerous or life-threatening. DO NOT attempt a procedure that you do not completely understand. Contact your Haas Factory Outlet (HFO) and schedule a service technician visit if you have any doubts about doing a procedure.