The calibration method for the EC30,
NP30,
NP60,
and
WB60
hydraulic hose crimping machines has
changed.
obsoleted.
The previous method using the
3/4"
diameter calibration rod (drawing number
EN86-039)
is being
The new procedure is as follows:
1.
Choose a hose/coupling combination and consult the Parker Approved Specification catalog
for the proper die and setting.
2.
Use the machine as specified in the manual to crimp the hose
and
fitting.
3.
Using calipers that read to at Ieast .001” measure the four diameters (across the flats) and average
.
This is your crimp diameter. The measurements should be made
halfway
up the coupling.
4.
Consult the Parker Approved Specification catalog for the target diameter of the crimp. If the
crimp is within
+/- .005",
the machine is properly calibrated and no further cahbration needs to be done.
If, however, the crimp is outside this range, calibration adjustment is necessary.
5.
Calibration adjustment on the
NP30,
NP60
and
WB60
is performed by either moving the linear
potentiometer
(on machines with the potentiometer on the back of the ram)
or
by adjusting the
potentiometer actuator (on machines with the plunger-type potentiometer on the side). On the former,
the potentiometer should be moved upward to loosen the crimp (increase the crimp diameter) and
downward to tighten crimp (decrease the crimp diameter). On the plunger-type potentiometer
machines, the actuator should be threaded (while holding the silver knurled knob) upward to tighten
the crimp and downward to loosen the crimp.
6.
After a small adjustment using the
ahove
method, check the machine by performing steps l-4 again.
7.
Calibration is an iterative procedure and may require multiple hoses to be crimped before a crimp
within the proper tolerance is reached. When a crimp is within +/- .005” of the published diameter, the
machine is calibrated.
Calibration of the machine should be checked regularly (depending on use) by measuring the crimp
diameters of hoses and verifying that they fall within the tolerance range.
Consider this as notice to the change in calibration methods for the above three machines. The EC30,
NP60,
and
WB60
are obsolete and no longer in production, therefore the literature in the field will not be
updated to reflect this change.
Please retain this letter for your records and attach it to the instruction
manual and any other place where the calibration method for the machine is posted.
If you have any questions regarding this procedure, call Parker Technical Services at 440-943-5700.
To Next Page
Loading...
