SCHUNK ROTA EP 380-127, Assembly And Operating Manual, Page: 11 / 73

Basic safety instructions
02.00|0889073_ROTA TB-TBS-EP |en 11
CAUTION
Hazard from vibration due to imbalanced rotating parts and
noise generation.
Physical and mental strains due to imbalanced workpieces and
noise during the machining process on the clamped and rotating
workpiece.
• Ensure the chuck's axial and concentric runout.
• Check options for remedying imbalances on special top jaws
and workpieces.
• Reduce the speed.
• Wear hearing protection.
Notes on safe operation
• The machine spindle may only be started up when clamping
pressure has built up in the cylinder and clamping has followed
in the permitted work area.
• Unclamping may only be possible when the machine spindle
has come to a standstill.
• If the clamping energy fails, the workpiece must remain firmly
clamped until the spindle is shut down and the workpiece is
secured.
• The technical safety requirements in the respective operating
instructions must be observed exactly.
Functional test
After installation of the chuck, its function must be checked prior
to start-up.
Two important points are:
• Clamping force At max. actuating force/pressure, the clamping
force specified for the chuck must be reached.
• Stroke control The stroke of the clamping piston must have a
margin of safety at the front and back end positions. The
spindle must not start up until the clamping piston has passed
through the safety margin.
When determining the clamping force required to machine a
workpiece, the centrifugal force acting on the chuck jaws must be
taken into account (according to VDI 3106).
If the chuck jaws are changed, adjust the stroke control to the new
situation.
2.4