© 2022 Genesis Attachments, LLC
Genesis GXT Mobile Shear 43
Piercing blades must fit tightly in some areas while having clearance in others. Piercing blades
are made from the same material as the cutting blades to withstand the friction caused by piercing
hard materials.
Areas
Highlighted in Blue
require contact fit
to the upper jaw and tang to prevent shattering.
Areas
Highlighted in Red
require an air gap, and blades may occasionally need to be ground
down to provide clearance.
Piercing blade contact with the clearance areas
(red)
will cause abnormal stresses to the blade
and the piercing blades and/or guide blades to shatter.
When necessary, build up the front lower edge of the tang (areas highlighted
highlighted
in yellow
in yellow
), following the procedures given in this manual. After welding,
surfaces should be squared with a grinder and finished with a file and a
machinist’s straight edge.
It is critical that the piercing blade pocket and tang surfaces are straight and
true, without dings, deformations, high or low spots, or areas that are worn
away.
Piercing blade bolts must not make hard contact with the bolt holes in the upper tang. In rare
cases it has been noted that improper alignment of piercing blade bolt holes and the bolt holes in
the tang can cause the piercing blades to break through the bolt holes.
When installing the piercing blades, the bolts must be freely installed by hand, not with an
air impact wrench.
The bolts may start freely, but when the bolt shank, which is larger in diameter than the threads,
enters the hole in the tang, the interference can cause side loading to the piercing blades. This
can cause the tips to break as they try to force the holes apart, or it may force the tips to seat
improperly on the tang which can also cause tip failure. This is not a common issue, but one that
should be noted as part of routine tip maintenance to prevent unnecessary costs and downtime. If
this situation is encountered, contact the Genesis Service Department for further instructions.
PIERCING BLADES
