the cylinder, and it can be filled up again as described under point 2. (Attention, please do
not work without safety goggles, take care that oil is filled without any air seepage and
that the used oil is disposed off in an environment-friendly manner)
• 5. Vent the cropping cylinder: Should you have some air leaked into the cylinder while filling in
oil, you can remove it by opening the screw 55, removing the ball 50 and finally refilling at the
niple 47. Here, oil must be filled in until no more air bubbles appear at the other end. It is also
advantageous to move the punch slightly in its axis so that the air bubbles can collect easily in
the area of the ventilation bore.
9.3 Punch and die replacement
Please switch off the compressed air supply to the cropping
cylinder prior to lossening or removing the screws (pos. 13)!
Attention: Moving the cropping cylinder with untightened screws
could damage it.
• 1. To replace the cutting punch (pos. 7 and 9) and the piercing punch (pos. 10) as also the die
(pos. 2), isolate the cropping cylinder from the compressed air network, so as to avoid an
inadvertent cropping action. The cropping action with untightened screws (pos. 13) damages
the threads in the cylinder head.
• 2. Remove the screws (pos. 13).
• 3. Pull out the counter bearing (pos. 11).
• 4. Remove the die with the guide (pos. 2, 3 and 4)..
• 5. Connect the cropping cylinder to the compressed air network and initiate the cropping
action and hold it, in order to avoid turning of the press slide while removing the screws (pos.
14).
• 6. Remove the screws (pos. 14) keeping pos. 5 in mind.
• 7. Replace the wear-out parts (pos.s 9, 10, 16 and 18) if required, and reassemble them
keeping point 5 in mind. For this, the screws (pos. 14) must be tightened with a torque of 19
Nm.
• 8. To replace the cutting punch (pos. 7), press the dowel pin and remove the screws (pos. 14).
The assembly is to be done in the reverse order, turn the screws (pos. 14) slightly, press in
the dowel pin and tighten the screws (pos. 14) with a torque of 19 Nm
• 8. The die (pos. 2, 3 and 4) can either be replaced completely, or only the worn out part after
disassembling the same.
• 9. In order to disassemble, the die the screws (pos. 5) are removed, and the dowel pin (pos.
22), if present, is pressed out. Thereafter, the die can be disassembled by turning the two
screws M8 and two screws M10 in opposite directions. However, attention must be paid to
doing this evenly, in order to avoid damage to the guide bush (pos. 9).
• 10. Assembling the tool: When assembling the die, first the guide bushes (pos. 8) are
pressed onto the bearing part (pos. 3). Thereafter, the die (pos. 2) is pushed onto the guide
bushes and the bearing part (pos. 4) is pressed onto it, and finally the screws (pos. 5) are put
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