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Thread: Belt tightening tool
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03-09-2007, 04:56 PM #1
Belt tightening tool
Come across a few belts recently on motors that have snapped due to being to tight. I was told today about a tool that can be bought to measure belt tightness. I was told that it had a spring in it which indicates weather its too slack or too tight, anyone heard of it and where i can get hold of one?
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03-09-2007, 06:13 PM #2
Re: Belt tightening tool
I think mechanics use these a lot to tension the water pump belts on cars.
Snap-on should have one.
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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03-09-2007, 07:02 PM #3
Re: Belt tightening tool
sounds good thanks, i imagine they are pricey from snap on but il have a look.
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03-09-2007, 07:36 PM #4
Re: Belt tightening tool
Found a link for you...
http://www.primetools.co.uk/index.ph...tart=41&num=20
ChillinIF AT FIRST YOU DON`T SUCCEED.
DESTROY ALL EVIDENCE THAT YOU TRIED!
and go get a cuppa
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03-09-2007, 07:56 PM #5
Re: Belt tightening tool
Great, thanks Chillin, just what im after
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03-09-2007, 08:06 PM #6
Re: Belt tightening tool
The other option is the "90° twist test".
Hold the belt between your forefinger and thumb, if you can twist the belt through 90° without struggling then the tension should be about right.
There you go, no chargeLast edited by Brian_UK; 03-09-2007 at 08:08 PM. Reason: Spelling!
Brian - Newton Abbot, Devon, UK
Retired March 2015
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04-09-2007, 01:56 AM #7
Re: Belt tightening tool
Hold the belt between your forefinger and thumb, if you can twist the belt through 90° without struggling then the tension should be about right.
There you go, no charge
I am told that there are no more "matched sets" of belts, even though you can buy a multiple pulley belt for commonly sized air handlers.
I see all these Harley Davidson motorcycles with what appears to be a damn timing belt instead of a chain. We have all these adjustable pulleys and belt sizes with angles and wedgy cuts.
Am I wrong, but isn't the duty of a Harley Davidson belt drive sufficiently adequate for most air handlers? What am I missing?
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04-09-2007, 02:25 AM #8
Re: Belt tightening tool
I bought mine from the pulley and belt supplier - special order for about Oz$50. Don't really use it much now - I've got a good feel for it, but it impressed a few building managers. I needed to carry a chart of tention for the different belts.Any way have you seen the new vented pulley design? they weigh about half as much and run the belts 17degC cooler. Cheers Bro
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04-09-2007, 03:13 AM #9
Re: Belt tightening tool
Originally Posted by Dan
http://www.gates.com/brochure.cfm?br...cation_id=6196
http://www.gates.com/index.cfm?location_id=534
Note: you may have to register for access to the information, but this should provide a start...
I used to use the notched belts in lieu of the standard v-belt because I thought the ran cooler due to the increased surface area and the notches providing a cooling effect when rotating.If all else fails, ask for help.
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04-09-2007, 06:01 PM #10
Re: Belt tightening tool
I use either the belt twist test like Brian_uk said, or a clamp ammeter on the motor.
I tighten and test using visual/audio and amps.
If it's pulling too high amps I loosen the belt, if it's slipping and the pulleys and belts OK I tighten until FLA met.
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06-09-2007, 05:21 PM #11
Re: Belt tightening tool
Great thanks guys
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02-09-2008, 09:00 AM #12
Re: Belt tightening tool
Go to a Fenner belt agent and they will be able to give you a belt guide with all the relevent tables for proper belt adjustment. You will also be able to get yourself a belt tension tool, which are inexpensive.
Regards.
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02-09-2008, 04:46 PM #13
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02-09-2008, 09:27 PM #14
Re: Belt tightening tool
i got one of these tools from bearing services a belt and bearing supplyer
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