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Dukane Manual Part No. 403–566–01
Section 10 – Probes and Probe Stracks
Stack Assembly
Attaching A Replaceable Tip
To A Horn
1. Inspect all horn and tip surfaces for stress
cracks, chips, or gouges. Any of these irregu-
larities will affect operation and could lead to
further equipment damage. Contact the Du-
kane Ultrasonics Tooling Department concern-
ing damaged horn components.
2. Apply an extremely thin layer of a high tem-
perature, high pressure silicon grease to the
back surface that mates with the horn. The
grease will allow both surfaces to intimately
mate and become acoustically transparent
which improves the energy transfer. Do not
apply any grease to the threads. We recommend
Dow–Corning #4 (or #111 as an alternate). A
small packet of Dow–Corning #4 is supplied
with the system. If you cannot use a silicon–
based grease in your facility, a petroleum–
based grease may be used. However, it is likely
to leave carbonaceous deposits on the surface,
and require more frequent joint maintenance.
Failure to follow these instructions, may re-
sult in the mating surfaces bonding and diffi-
culty removing the tip from the horn.
3. Thread the tip into the horn and tighten to the
torque specifications below using an open end
wrench of the correct size to fit the wrench
flats of the tip. This is illustrated in Figure 10–
3. If necessary, use a spanner wrench (on horns
with spanner wrench holes) or an open end
wrench (on horns with wrench flats) to keep
the horn from turning in your hand. A canvas
strap wrench is permissible if it does not gouge
or scratch the horn.
• 70 inch-lbs for an 8mm threaded tip
• 100 inch-lbs for a 3/8" x 24 threaded tip
• 160 inch-lbs for a 1/2" x 20 threaded tip
Tighten
Figure 10–3 Replaceable Tip Installation
CAUTION
NEVER clamp the horn
in a vise. The resulting
scratches or gouges in
the surface are stress
risers which may result
in cracks.
ƽ
NOTE
Dukane Part No for the 20kHz spanner
wrenches is 721–68
Dukane Part No for the 40kHz spanner
wrenches is 721–44
NOTE
Do not apply any grease to the threads of the
replaceable tip. This may cause the tip to loosen
from the horn resulting in inconsistent operation.