[TheForge] Lawn Mower Blade

[Jerry Smith]

The last brush hog I worked with, the blade may or may
not be 5160, but that sucker was like 6 or 8 feet
across and had a lot of torque from the tractors take
off. It would make a mess out of any living creature
that went under it.

Jerry

--- Doug Ayen <ayen at homeport.org> wrote:

> Thus Spake David E. Smucker
> (davesmucker at hotmail.com):
> > I have had a Gravely for about 15 years now --
> still has the original blade 
> > on it.  I don't use it near as much as I use to
> but it had a least 10 years 
> > of heavy use.  Blades are 5160, and heavy like a
> Bush Hog blade.  You can 
> > forge out the cutting edge and then grind, no need
> to heat treat.  This is 
> > done all of the time with Bush Hog blades.  After
> working on you blade you 
> > should balance.  Only problem I have had on the
> Gravely is breaking some 
> > teeth of the bevel gear set that drive the blade
> out of the main gear box. 
> > I haven't replaced them yet but know I should so
> it is on my to do list. 
> > Gravely keeps parts for units that go back many
> many years -- but of course 
> > they are never cheap.  (All of this is based on
> the assumption that you 
> > Gravely is of the type with the cutting deck out
> front of the gear box, 
> > wheels and engine.  This is the original type of
> Gravely, they also make 
> > other designs too.)
> > 
> > Dave Smucker
> 
> Speaking of which, what are bush hog blades? 5160? 
> 
> Thanks.
> 
> --doug
> (got a piece I forged out from such a blade that's
> come out much better
> than I'd hoped -- what was going to be the
> prototype/test piece might as
> well be the final, if I can figure out a good
> heat-treatment for it.)
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