How to change a surface grinder to use 2 x 72 inch belts!

[Rene E. Roy]

I just recently purchase a surface grinder and I want to convert it to use 2 x 72 inch belts, has anyone done this. I could sure use some help on this one.

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Rene
www.geocities.com/roy_knives/blades.html









[This message has been edited by roy.knives (edited 27 October 1999).]

 

[tom mayo]

not too difficult...first you need a ten inch rubber wheel like you use on a knife making machine...goes where your stone wheel would go, youve got to figure out how to make the arbors coincide....shouldnt be too hard.. then a tracking wheel about 35 inches away, or something like that....you need a telescoping arm...simply two pieces of aluminum with a slot down the center of both so you can adjust it....and a tracking wheel at the end...you can get them from knife supply houses....the aluminum needs to be sturdy...and have at it....ive never made one but have seen several.....just like the way a burr king works...basically....if you have the room build one that takes belts twice as long...they will last a lot longer.

 

[goshawk]

I've made one and it works great. I used an
8" rubber contact wheel from my 2x72 grinder
and then just bought a new one for my grinder. I had a machine shop fix the contact wheel to fit on the shaft of the surfacegrinder and then I took a piece of pipe that would fit around the out side of
the housing that the wheel shaft goes through,which was tapered, and cut the pipe in two pieces and cut extra out of the pipe so there would be an adjustment gap. I took some heavy strap steel and drilled two holes in four pieces and welded them to the pipe so I could run bolts through and tighten it up
on the housing. I then took a piece of 2x2"
square tubing that was longer than I needed
and welded it to the collar. I got a spring
loaded idler wheel from texas knifemaking supplies that they have for their small grinder but sell seperately it is very adjustable. I bolded the idler wheel to a flat piece of plate steel and held it up on
the 2x2 arm whth a belt on the contact wheel
and up over the idler wheel and put marks where the plate sat on the arm. I then measured how far the idler wheel would travel
pulling down on it to put tension and then
moved the plate down on the arm 1/2 that distance and welded it to the arm. It works
great for me. Hope this might help.
goshawk
through to tighten the pipe to the housing.
then welded ears on welded ears

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