HEAD.
The heads have three different types of
flutes. The bore flutes, the spin flutes, and
the spin lugs.
The bore flutes are the spiral flutes that
extends for about 15". The spin flutes are
the flutes that are on the tapered section.
The spin lugs are the flutes behind the plate.
Compare the picture of the new head to this
worn head, the flutes should be sharp, not
rounded.
The edges of the flutes should have a square
corner. When they become rounded the head
should be rebuilt.
Bore flute wear can be measured with our
head guage.
When new the bore gauge fits tight. The
wear limit depends on your application. For
fine hole plates the head should be rebuilt
when the clearance over the guage is 1/16"
With large hole plates, 1/8" is the limit.
Product definition suffers, and there is a loss
of production when the wear is more than
these amounts.
Shown is a new 11-9 spiral fluted head with
16 flutes. Pretty isn't it.
25
Notice the sharp corners on a new head.
BORE
FLUTES
SPIN
FLUTES
SPIN
LUGS
