MEASURE THE CRIMP DIAMETER
When using 21 and 22 dies
, measure half way
between ridges (Fig. 1). To be sure
crimp diameter is being properly measured, mark a
crimp flat. Beginning with that flat, count 9 flats to
get the diameter. Be sure caliper blades DO NOT
touch ridges. (See photo 1.)
Measure halfway between the ends of crimped portion
of the ferrule (Fig. 2).
Measure halfway down the crimped portion of the
ferrule (Sketch 2).
CHECK CRIMP DIAMETER
The measured crimp diameter must be within 0.010”
of the published crimp diameter. If not, the hose
assembly cannot be used, and adjustment will
be required.
ADJUST THE CRIMP DIAMETER (IF NECESSARY
Check top of die set and the surfaces of the
pressure plate for any debris (metal chips, dirt,
etc.). Debris may cause some variation
in crimpdiameter.
If necessary, clean the surfaces and lightly lubricate
with Molykote.
If the machine is properly calibrated, a slight
adjustment to the crimp setting can be made.
To get a smaller crimp diameter, change the setting
to a smaller number.
To get a larger crimp diameter change the setting to
a larger number.
For every .001” change in crimp diameter, change
the setting by 002. For example, to increase the
crimp diameter by .002”, increase your setting from
245 to 247.
After the correct diameter is achieved, record
thisnew setting on your crimp data chart for
futurereference.
MULTIPLE CRIMPS
When crimping multiple assemblies check every
tenth crimp to ensure diameter is within acceptable
range (+/- 0.010”).
NOTE:
For Crimping with the 20G and the
MC38 Die Set you will need the 20G/MC38
Pressure Plate (Product No. 7482-1078,
Part No. 78046)
NOTE:
DO NOT measure on top of part
number stamps.
Crimp Flat “1”
FIGURE 1
Crimp Flat “9”
Ridges
When
NOT using 21 and 22
dies
use Gates dial calipers
(Product No. 7369-0322,
Part No. 78215) which are
notched to clear ridges,
measure halfway between
ridges (Sketch 1). Be sure
caliper fingers DO NOT
touch ridges or part number
stamps. (See Photo 1)
SKETCH 2
PHOTO 1
Crimp
Diameter
FIGURE 2
Crimp
Diameter
Crimp Dia.
Ridges
Caliper
SKETCH 1
1.
MEASURING AND ADJUSTING DIAMETER
MOBILE CRIMP 4-20 SAFETY AND OPERATING MANUAL
2.
3.
4.
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