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  1. #1
    Join Date
    Nov 2004
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    Default Stationary Belt and Disc sander drive belt

    I have a Taurus (Aldi) Belt and Disc sander with a frayed drive belt which is a V belt design. The machine runs but stalls so I'd like to replace the belt, I can't make out what model of belt it is. I notice that similar machines that look exactly the same eg Ryobi use cogged belts, are the belts interchangeable? I've attached a photo if anyone could help identify the belt and where perhaps I can pick one up quickly.IMG_0304.jpg

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  3. #2
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    Aug 2008
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    Looks like it says O-530 E.

    Not sure where you'll get one quickly at this time of year, the usual suspects (bearing shops) are probably shut for the week. Maybe Repco or Supercheap? Take it with you to confirm the size.

  4. #3
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    Feb 2018
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    some of the better bearing shops will make to order cogged belts which should run smother.

  5. #4
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    Thanks Elan and Mature. It looks like O-530 E which shows up as a Washing machine belt. Can get one from China but it could take up to 2 months. I may explore the custom designed belt further but don't really want to wait until the Bearing shops are open, I've got some spare time at the moment and was hoping to get some work done around here hence the need for a functioning sander. Will try SCA and Repco in the first instance.

  6. #5
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    No luck at either Super Cheap Auto or Repco. Actually had a spare belt off a washing machine that is a tad too big, I don't suppose there is any effective way of shortening these types of belts?

  7. #6
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    Oct 2010
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    NSW
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    I've used this method only on large "O" rings but I told a mate about it and he used it on a small "V" belt for a drill press that he can't get a belt for (M section I think). He only commented last week that it was still going strong after two years.
    The method? Cut a fairly long splice (~3-4 times the depth) and use super glue to join it. Worth a try.

  8. #7
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    May 2019
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    Does the machine stall when you apply too much pressure to the workpiece?

  9. #8
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    Nov 2008
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    If the belt is only frayed, not broken, perhaps you can adjust the belt tension by moving the motor? This might give you immediate usage time on the machine for a limited period while you explore the replacement belt options.

    Chas.

  10. #9
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    Nov 2004
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    Thanks for the subsequent posts on this issue, I'll give an update for future reference in case anyone else encounters this issue.

    Superglue did not hold but I didn't use a 3 to 4 depth ratio, I thought this was promising Can Fan Belts be Spliced ? - YouTube, the belt felt solid, it rotated both pulleys for a few seconds and then the holes holding the improvised stapled enlarged a little and the second pulley didn't spin. Chas, there's no adjustability that I can see at all on the driving pulley but good idea in other applications. I've ordered the belt but been told it could be up to months before I see it.

  11. #10
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    I am surprised that the machine has no belt tension adjustment. V belts wear and stretch, and it is normal design practice to provide a method of compensating for this in the design of a machine which uses them. Common methods are an adjustable distance between drive and driven pulleys, a pulley with an adjustable diameter, or an idler pulley. IMHO a V belt machine without an available tension adjustment is one which is designed to fail. I suggest you re-examine your machine carefully, It beggars belief it does not have a tension adjustment of some sort.

    Your belt appears to be a metric series belt 530 mm in length, which is not a special length. I am not familiar with the prefix O or the suffix E on your belt, they may be manufacturer specific for section dimensions, but I think you will be able to obtain one locally fairly quickly once the silly season is over.

    Chas.

  12. #11
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    Oct 2007
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    Tiger, there are three appliance spare parts places along Heatherdale Rd (Ringwood/Heatherdale) and a couple mention washing machine parts. All closed at the moment but may be open again by Tuesday. I found both the ones mentioning wm parts helpful in the past when we were in Croydon. Hope that helps.

    Short term temporary measures that I know can work with car fan belt issues. Pantyhose or stocking leg, run a leg around the pulleys so the ends overlap and pull tight, mark adjacent points on both ends, remove and tie ends so the marked points are at the knot, trim ends about 25mm beyond the knot and mount on pulleys. (Requires enough clearance around the belt path for the ends to flap, and can be noisy.)

    Hollow braided polyethelene rope (ski rope or temporary clothesline cord). Guestimate the length required and cut about 400mm longer, flame seal both ends and shape to the steepest taper you can. About 200mm in from one end, grip the rope in both hands with a gap of about 30mm between them and maintaining grip bring hands together about half way. This will bulge the rope and start to open the gaps in the braid. Poke a drill bit shank or similar into one of the gaps then release the rope. Pull the drill shank out of the rope and the opening should remain until you pull the rope taut. Take the other end of the rope and thread through the opening as far as you can, pull the rope taught to lock the opening, move one hand back so its a fit forward of where the end has threaded to, grip there and just beyond the entry point to expand the braid and feed as much rope as possible through the entry. Check overall loop length against the pulleys and continue until the belt is a tight fit to install, but a little loose when installed. Remove from the pulleys. The rope should now be in a loop with one free end about 200mm long loose. Repeat the threading in procedure for the loose end starting about 75mm back from the first entry point and continue until all of the loose end is threaded in. You should then have an adjustable length belt and be able to shorten it 10mm or so by threading in both ends a small amount. Then fit over the pulleys and test run.

    I have used both methods in the past with cars and managed at least 100miles with a fanbelts rigged this way, so it should get you through the long weekend with light to moderate loading. From what I could see in your pictures though, something in the belt path is rubbing the back of the belt, or it was installed with a twist and sitting in the V properly on one pulley and running with the top and one side in the V on the other. Check for clearance, as both of my suggestions will fail if the belt rubs continuously when rotating.
    I used to be an engineer, I'm not an engineer any more, but on the really good days I can remember when I was.

  13. #12
    Join Date
    Nov 2004
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    Quote Originally Posted by Chas View Post
    I am surprised that the machine has no belt tension adjustment. V belts wear and stretch, and it is normal design practice to provide a method of compensating for this in the design of a machine which uses them. Common methods are an adjustable distance between drive and driven pulleys, a pulley with an adjustable diameter, or an idler pulley. IMHO a V belt machine without an available tension adjustment is one which is designed to fail. I suggest you re-examine your machine carefully, It beggars belief it does not have a tension adjustment of some sort.

    Your belt appears to be a metric series belt 530 mm in length, which is not a special length. I am not familiar with the prefix O or the suffix E on your belt, they may be manufacturer specific for section dimensions, but I think you will be able to obtain one locally fairly quickly once the silly season is over.

    Chas.
    Thanks Chas, they look like pretty simple machines, no indication on manual that the pulleys can be adjusted in any way. They are an ubiquitous machine but I think they all suffer from the same mechanical constraint.

  14. #13
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    Quote Originally Posted by malb View Post
    Tiger, there are three appliance spare parts places along Heatherdale Rd (Ringwood/Heatherdale) and a couple mention washing machine parts. All closed at the moment but may be open again by Tuesday. I found both the ones mentioning wm parts helpful in the past when we were in Croydon. Hope that helps.

    Short term temporary measures that I know can work with car fan belt issues. Pantyhose or stocking leg, run a leg around the pulleys so the ends overlap and pull tight, mark adjacent points on both ends, remove and tie ends so the marked points are at the knot, trim ends about 25mm beyond the knot and mount on pulleys. (Requires enough clearance around the belt path for the ends to flap, and can be noisy.)

    Hollow braided polyethelene rope (ski rope or temporary clothesline cord). Guestimate the length required and cut about 400mm longer, flame seal both ends and shape to the steepest taper you can. About 200mm in from one end, grip the rope in both hands with a gap of about 30mm between them and maintaining grip bring hands together about half way. This will bulge the rope and start to open the gaps in the braid. Poke a drill bit shank or similar into one of the gaps then release the rope. Pull the drill shank out of the rope and the opening should remain until you pull the rope taut. Take the other end of the rope and thread through the opening as far as you can, pull the rope taught to lock the opening, move one hand back so its a fit forward of where the end has threaded to, grip there and just beyond the entry point to expand the braid and feed as much rope as possible through the entry. Check overall loop length against the pulleys and continue until the belt is a tight fit to install, but a little loose when installed. Remove from the pulleys. The rope should now be in a loop with one free end about 200mm long loose. Repeat the threading in procedure for the loose end starting about 75mm back from the first entry point and continue until all of the loose end is threaded in. You should then have an adjustable length belt and be able to shorten it 10mm or so by threading in both ends a small amount. Then fit over the pulleys and test run.

    I have used both methods in the past with cars and managed at least 100miles with a fanbelts rigged this way, so it should get you through the long weekend with light to moderate loading. From what I could see in your pictures though, something in the belt path is rubbing the back of the belt, or it was installed with a twist and sitting in the V properly on one pulley and running with the top and one side in the V on the other. Check for clearance, as both of my suggestions will fail if the belt rubs continuously when rotating.
    G'day and thanks Mal for your usual helpful suggestions. How is life in Alexandra? I miss being able to scoot down the highway to your place.

    I will start ringing around to see if I can find a belt, think you're onto something with the pulley rubbing. They are pretty poor plastic pulleys from what I can see. The belt that broke was the original so may have been installed incorrectly from the start.

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