Belt tension on stump grinders

MrDiesel · 21st July 2010, 10:18 PM

Hi All,

I have a really old Rayco stump grinder which was given to me in less than operational condition. Its the length of the Rayco RG13 series II but an ealier model (Rayco in Melbourne didnt have a part number for it??)

I have been slowly getting it going again but am not sure on how tight the belt should be. has anyone some tips or tricks for belt tensioning?? Thanks

Eric Frei · 21st July 2010, 10:26 PM

At least you have adjustment, the geniuses that designed the Kanga grinder missed that part.

Loose belts slip, over tight ones snap .... loose belts can be tensioned, snapped ones need replacement.

Based on the above I would suggest you make them relatively snug but not over tight, if they slip then tension a little more.

TrevMcRev · 22nd July 2010, 01:47 AM

Quote:

Originally Posted by Ekka

At least you have adjustment, the geniuses that designed the Kanga grinder missed that part.

Loose belts slip, over tight ones snap .... loose belts can be tensioned, snapped ones need replacement.

Based on the above I would suggest you make them relatively snug but not over tight, if they slip then tension a little more.

And a bit of BeltGrip spray can help reduce slip too.

If you hear slipping under load, stop adjust & spray. You'll quickly glaze & wear them otherwise.

Jeff Darby · 22nd July 2010, 07:43 AM

Quote:

Originally Posted by MrDiesel

Hi All,

I have a really old Rayco stump grinder which was given to me in less than operational condition. Its the length of the Rayco RG13 series II but an ealier model (Rayco in Melbourne didnt have a part number for it??)

I have been slowly getting it going again but am not sure on how tight the belt should be. has anyone some tips or tricks for belt tensioning?? Thanks

The tension mark [adjustment] should be on the inner belt guard.

Mark G · 22nd July 2010, 05:31 PM

Quote:

Originally Posted by Ekka

At least you have adjustment, the geniuses that designed the Kanga grinder missed that part.

Loose belts slip, over tight ones snap .... loose belts can be tensioned, snapped ones need replacement.

Based on the above I would suggest you make them relatively snug but not over tight, if they slip then tension a little more.

I have a fix for this I will see if I can load the photos up of the mod I did on the Kanga.Those lovejoy tensioners are crap.

MrDiesel · 28th July 2010, 05:39 PM

Thanks JayD, The mark was not on mine but a mate with the grinder still had the tensioning marks. Seems tighter than i thought. Ill be giving it a workout as soon as this rain stops.

Out of interest what are you guys using for greasing bearings. Im using marine grade bearing grease from super crap

21st July 2010, 10:18 PM	#1
MrDiesel Semi-mature vigorous tree Join Date: Oct 2008 Location: here Posts: 196	Belt tension on stump grinders Hi All, I have a really old Rayco stump grinder which was given to me in less than operational condition. Its the length of the Rayco RG13 series II but an ealier model (Rayco in Melbourne didnt have a part number for it??) I have been slowly getting it going again but am not sure on how tight the belt should be. has anyone some tips or tricks for belt tensioning?? Thanks

21st July 2010, 10:26 PM	#2
Eric Frei Admin - Razor sharp and independent 2 X Diploma Level 5 qualified arborist Join Date: Jan 2007 Location: Brisbane Posts: 12,820	Re: Belt tension on stump grinders At least you have adjustment, the geniuses that designed the Kanga grinder missed that part. Loose belts slip, over tight ones snap .... loose belts can be tensioned, snapped ones need replacement. Based on the above I would suggest you make them relatively snug but not over tight, if they slip then tension a little more. __________________ Protect your rights to work - Join Australian Tree Association My businesses:- Qualified Brisbane Tree Lopping \| Stump Grinding Brisbane \| Brisbane - Gold Coast Consulting Arborist

28th July 2010, 05:39 PM	#6
MrDiesel Semi-mature vigorous tree Join Date: Oct 2008 Location: here Posts: 196	Re: Belt tension on stump grinders Thanks JayD, The mark was not on mine but a mate with the grinder still had the tensioning marks. Seems tighter than i thought. Ill be giving it a workout as soon as this rain stops. Out of interest what are you guys using for greasing bearings. Im using marine grade bearing grease from super crap

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