Dukane iQ Series User Manual page 43

Attaching the Mounting
Stud to a Horn or a
Booster
1. Inspect the stud for cracks or damaged threads.
Replace the stud if it is cracked or otherwise dam-
aged.
2. Remove any foreign matter from the threaded stud
and the mating hole.
3. Thread the mounting stud into the input* end of the
horn or the input* end of the booster and tighten to
the following torque specifications using an allen
wrench in the socket head of the mounting stud.
Table 6—I lists the torque specifications in units
for both English and Metric systems of measure-
ments. Figure 6–5 is a handy conversion graph if
you require intermediate values not listed in the
tables.
DO NOT hold the booster by the mounting rings
when tightening stud. The mounting rings have a
shear pin which could snap under excessive torque.
Use a spanner wrench (on horns with spanner
wrench holes) or an open end wrench (on horns
with wrench flats) to keep the horn or booster from
turning in your hand.
In-lb Ft-Lb
12-18 1 - 1.5
12-18 1 - 1.5
12-18 1 - 1.5
Table 6—II Stud Torque Unit Conversions
*
Always assemble the mounting studs that mate
boosters, transducers and horns to the input end of the
horn or the input end of the booster first. This is shown
in Figure 6-7.
NEVER thread a stud into the transducer or the
output end of the booster first. See Booster Notes in
this section for correctly identifying the output end of
a booster.
Dukane Manual Part No. 403-577-00
N-m Size
1.4 - 2 1/2" x 20 tpi studs
1.4 - 2 3/8" X 20 tpi studs
1.4 - 2 8 mm studs
Section 6 – Probes and Probe Stacks
NOTE
Do not apply any grease to the stud
threads or the tapped hole. This may
cause the stud to loosen. If the stud
wanders within the joint, it can vibrate,
resulting in excessive heat. In some
cases, this can melt the tooling mate-
rial.
NOTE
To convert inch-lbs to ft-lbs, divide by 12
To convert inch-lbs to Nm, divide by 8.852
To convert ft-lbs to Nm, multiply by
1.356
To convert Nm to ft-lbs, multiply by
0.7376
Torque specifications have a tolerance
of about ± 10%.
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