8
MEASURING CRIMP DIAMETER
To properly measure a crimp diameter:
DO NOT measure on top of
part number stamps
When using 21 and 22 Dies
1. Using Gates “21/22” dial calipers (Product
No 739-1320, Part No 78217) measure
halfway between ridges (Fig 1). to be sure
crimp diameter is being properly measured,
mark a crimp
fl
at. Beginning with that
fl
at,
count 9
fl
ats to get the diameter. Be sure
caliper blades DO NOT touch ridges (See
Photo 3.)
2. Measure halfway between the ends of
crimped portion of the ferrule (Fig 2).
3. Should actual crimp diameter not be
within recommended crimp tolerance, check
calibration of the machine and recalibrate.
If machine is properly calibrated, you may
need to make a slight adjustment to the Dial
Vernier Adjuster,
When NOT using 21 and 22 Dies
1. Using Gates Dial Calipers (Product No
7369-0320, Part No 78215) which are
notched to clear ridges, measure halfway
between ridges (Sketch 1). Be sure caliper
fi
ngers DO NOT touch ridges or part
number stamps (See Photo 3)
2, Measure halfway down the crimped
portion of the ferrule (Sketch 2).
4. To obtain a smaller crimp diameter,
change the Vernier Adjuster to a smaller
number. To get a larger crimp diameter,
change the Vernier Adjuster to a larger
number. Changing the adjuster readout by
.05 will change the crimp diameter .001”.
Record the new setting on your crimp chart
for future reference.
NOTE:
Photo 3
