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Implement Alley Discussion Forum

Brush Hog sharpening ?

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Lou

08-15-2007 13:00:17

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Any tricks to sharpen brush hog blades, Ive got 3 hogs that need sharpening.

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Larry T

08-16-2007 17:44:03

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

When it comes to balancing them I have found that taking them off and weighing both blades aginst each other on a balance scale is the best method.Step by step.
1 Remove the blades and place in vice.
2. Sharpen each.
3. Check balance of each blade separately
4. Check weight of blades against each other using a balance beam or balance scale.
5. Reinstall the blades and check torque Twice!!!! on the attach bolts. Start it up and see how smooth it is. Larry T

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soundguy

08-16-2007 10:49:19

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

I've alwayys used a 4" angle grinder and got them to about 1/8" flat edge.. that way they shred brush, instead of making sharp tire-finding spears like a sharp blade would.

DO crib and securly jack-stand the mower.. don't reliy on 3pt or hyds or hollow cell concrete blocks to save your life.. only jack stands or timber.. etc..

Soundguy

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buickanddeere

08-16-2007 07:54:48

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

I don't try to get a perfect nick free edge. If you do a factory fresh edge a stone is going to jump up and pound off new edge. New blades are surprisingly cheap if the old ones are beat.

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MF Poor

08-17-2007 09:48:08

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Re: Brush Hog sharpening ? in reply to buickanddeere, 08-16-2007 07:54:48

I just recently bought a set of blades from Bush Hog for my 286 cutter. Freight and all, only $45. They were cheaper than aftermarket blades.

Sharpen a bush hog blade too sharp and not only will it dull quickly, they'll cut saplings off sharp instad of shattering them. Next round, you'll have a nice clean 2" hole in an expensive tractor tire. BTDT, got a very expensive GoodYear radial planter next to the shop.

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Jerry/MT

08-15-2007 21:24:51

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

Read and follow the manufacturer's instructions for sharpening them. And if they are really bad, consider replacing them. You could have an unseen crack in one of those dings that will progate and result in a portion of the blade coming off. If that happens, in comes right through the side where it can hurt you or someone standing near by.

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msb

08-15-2007 18:36:17

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

If they are really dinged up bad, I will take a torch to them and finish with a grinder. Saves a lot of grinding and doesn't seem to affect the temper.

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Rick Kr

08-15-2007 13:50:49

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

I guess I am missing something.

My brush hog blades swing on a large bolt that is at one end of each blade. I don't see how balancing the blade on my finger and grinding the heavy end would do anything for balance.

That works and is recommended from most OEM books I have read for finish mower blades (center bolt), but never seen that for "brush hog" blades (end bolt).

I would think you would want both opposite blades to weigh the same.

Part of the answer to your question... I grind either a 45 or 60 degree edge on the blade. The steeper the edge the longer it seems to last in heavier brush.

Rick

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georgeky

08-15-2007 15:46:52

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Re: Brush Hog sharpening ? in reply to Rick Kr, 08-15-2007 13:50:49

You are exactly right, I don't know what I was thinking or maybe wasn't thinking. They would have to be weighed to balance them. I guess I was thinking of lawn mower blades, since I never sharpen my Bush Hog blades. The heat is getting me down.

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georgeky

08-15-2007 13:04:06

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:00:17

Yes. They need to be balanced. hold them centered on your finger and find the heavy end, then grind off a little more to balance up a little.

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Joe(TX)

08-16-2007 06:01:53

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Re: Brush Hog sharpening ? in reply to georgeky, 08-15-2007 13:04:06

Lou
You cannot balance "bush hog" blades thet way. There are individual blades on each end.

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Lou

08-15-2007 13:09:37

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Re: Brush Hog sharpening ? in reply to georgeky, 08-15-2007 13:04:06

Can I do a decent job without taking them off the machine, like with a simple hand grinder ?

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hayray

08-15-2007 18:42:44

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:09:37

I do that also, but if they are really beat up bad and you want to do a good job mowing on grass then you should take them off to get the relief really ground off on the sloped edge side, it is hard to reach with a grinder because the top edge is the side you grid the relief on and the bottom edge is flat. If they have big nicks out of them I take them off and put them in my forge and pound the edge back onto them with out haveing to remove all that steel. Then I sharpen them with my belt grinder, got the idea from an Amish blacksmith shop that used a power hammer on the blades they sharpeded for the highway department.

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BCnT

08-15-2007 14:03:40

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Re: Brush Hog sharpening ? in reply to Lou, 08-15-2007 13:09:37

sure...i do mine like that all the time...as long as blades feel balanced now youre not gonna grind em outta whack that much.
lil hint...i put a 8'' c clamp on bottom of deck to push blade against while i'm grindin...sure makes it easier.

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Lou

08-16-2007 07:10:18

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Re: Brush Hog sharpening ? in reply to BCnT, 08-15-2007 14:03:40

Thanks for the info, Ill get a look at them this weekend, dont expect its a pretty picture.

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