Tool Setup; Spindle Speed Selection - Promac GHB-1330 Manuel Utilisateur

The index mark (A) on the camlock should be between the
two indicator arrows (B).
If not, adjust the cam studs by turning them in or out by one
turn as needed.
Tighten cam locks.
Attention:
Never exceed the max speed limitation of the work holding
device.
Jaw teeth and scroll must always be fully engaged. Otherwise
chuck jaws may break and fly off in rotation (Fig 10).
Avoid long workpiece extensions. Parts may bend (Fig 11) or
fly off (Fig 12).
Use tailstock or rests to support.
Fig 10
Fig 11
Avoid short clamping contact (A, Fig 13) or clamping on a
minor part diameter (B).
Face locate the workpiece for added support.

6.3 Tool setup

The cutting angle is correct when the cutting edge is in line
with the centre axis of the work piece. Use the point of the
tailstock centre as a gauge and shims under the tool to obtain
the correct centre height.
Use a minimum of two clamping screws when installing the
cutting tool to the four way tool post.
Avoid big tool extensions.
6.4 Spindle speeds selection
The correct spindle speed depends on the type of machining,
the cutting diameter, the material to be machined and the
cutting tool.
These are recommended max. speeds for a 50mm cutting
diameter with carbide (HM) tools:
Aluminium, brass
Cast iron
Mild steel
High carbon steel
Stainless steel
Fig 12
Fig 13
1500 RPM
1000 RPM
800 RPM
600 RPM
300 RPM