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Alcoa Fastening Systems - Stoughton Operations
44 Campanelli Parkway ~ Stoughton, Massachusetts 02072
800-343-3633 / 800-343-9664
For Your Info ~ Technical Updates
FAQ
 E-Mail
Technical Support
FYI...........Thread
Setter Tools (Mandrels Breaking and Stripping of insert threads)
One of the most common problems when using a thread-setting insert
tool (hand or air operated) is the breakage of the mandrel or stripping of
insert threads during the setting process. Each threaded insert has a very
specific grip range associated with it's thread size. The grip range is the
total thickness of the material that the threaded insert will be set into. As an
example if you are setting a threaded insert into a .210 thick material you must
select a threaded insert which has a grip range that covers the .210 material
thickness.
(A threaded insert indicating a grip range of .125-.250 would be the
correct choice.) If you had selected a threaded insert that has a grip range
specification of .010-.080 then what will happen during the setting process can
cause your mandrel to break or the internal threads strip out. During the
setting process the bulge which forms on the blind side of the
application must expand outside of the hole. If the incorrect grip range
is selected the budge tries to form in the inside of the hole and having no
place to expand it puts excessive pressure on the mandrel the end result is a
broken mandrel or stripped threads.
Therefore, it is critical that in the selection of your threaded inserts you
should pay attention to your material thickness and select the correct
grip range.
Note: When setting threaded inserts the tool Must
Be Kept Parallel to the work
during the setting procedure. Failure to do this may also cause mandrel breakage
especially in the smaller sizes 4-40, 6-32 etc.
FYI............Closed-End Rivets
A slightly smaller mandrel diameter is required for closed-end rivets;
therefore when setting closed-end rivets using Marson rivet setting tools, we recommend
you use one size smaller nosepiece whenever possible
(i.e., to set 1/8" rivets, use
3/32" nosepiece)
TU.............39062/302-E Air/Hydraulic Riveter
Normally the vacuum system was adjusted by a round knurled knob just above the
trigger button. On the newer models you will find a recessed standard screw slot which
when turned will adjust the vacuum the same as the knurled knob.
FYI.............Button Trigger on 302E and 304E
Unlike the 300(E) and the 301(E) which employ a lever trigger mechanism to
cycle the tool, pushing and immediately releasing the button on the 302E and 304E will not
cause the tool to cycle completely.
You must keep the button depressed long enough until rivet sets.
Many operators, unfamiliar with these tools, have reported that the tool is defective and
is not setting the rivet properly or that is taking to many cycles to set the rivet.
FAQ..............How do I correctly check the fluid
levels on a 300E & 301E?
A. Remember to remove the frame head before you check the hydraulic fluid levels in these
tools. When the frame head is removed, the internal pressure against the jaw set is
reduced which changes the reading you will get.
FYI............Recommended Hydraulic Fluid for
Air/Hydraulic Rivet Tools
The following is a list of equivalents
Make sure that fluid is NON-Foaming
Texaco ISO68 Petroleum oil (turbine oil) R&O
Mobil Turbine Oil #32
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