Festo DGE-25 ZR RF Series, Repair Instructions

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40 / 48 Festo 7DGE_25-63_ZR_KFb_en
• Align the moment compensator towards the centre of the slide by turning
the two threaded pins. The distance between the moment compensator and
slide must be identical on both sides.
• Set the moment compensator by adjusting the threaded pins by feel so that
there is no perceptible longitudinal play between the slide and moment
compensator.
• Move the moment compensator and slide against each other during setting.
• Avoid bracing the moment compensator with the slide since this can have a
negative influence on the running characteristics of the guide.
4.6 Assembly and function check
After completing the assembly work on the toothed belt axis, the correct function must be checked by following the steps
below.
4.6.1 Buffer and belt assembly
• Move the piston to each of the end positions of the toothed belt axis in turn
and then check the distance from the piston to the corresponding drive
cover (Y).
Type Minimum distance Y Maximum distance Y
DGE-25 19 mm 23 mm
DGE-40 30 mm 35 mm
DGE-63 44 mm 51 mm
If the distance (Y) is smaller than the specified minimum, the buffer may not
have been correctly assembled.
• Check the assembly of the buffer and fix the problem if necessary
(see section 4.3 “Drive covers” ).
If the distance (Y) is greater than the specified maximum, the toothed belt is too
short and the clamp piece cannot be screwed in far enough.
• Check the length of the toothed belt and replace it if necessary
(see section 4.4 “Replacing the toothed belt” ).
Y
4.6.2 Switching characteristics of the magnet
• Move the piston to the right-hand end of the toothed belt axis (recess in the
slot).
• Transverse the full slot using a suitable proximity sensor (type SME-8 or
SMT-8). The proximity sensor must respond in the area of the left-hand
piston side that is opposite the slot recess.
4.6.3 No-load torque
It must be possible to move the piston without much resistance or jerking when
idle, without a drive attached or load connected.
This check is based on the technician's instinct and experience. It is not possible
to specify precise test values.