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Thread: Linked belting

  1. #1
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    Default Linked belting

    Hi

    Everyone seems to give the linked belts top marks - smoother running . I would like to try using it in B section size but it appears to be fairly hard to find . Does anyone know of a supplier in Melbourne ? Mike

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    Default

    A bit of a segway but on the topic of belts:

    Does anyone know where to get poly-v belts easily? I'm looking for J section, probably 4 ribs, and about 381mm long (150J4 in yank speak). They are available for a few bucks in the US but shipping is a killer.

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    Default carbatec

    I see carbatec has them but the price Power Twist Link V-Belt 1.2m : CARBA-TEC

    Opinions on the PM forum seem to express that these belts are not as good as first thought . Mike

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    Quote Originally Posted by pippin88 View Post
    Does anyone know where to get poly-v belts easily? I'm looking for J section, probably 4 ribs, and about 381mm long (150J4 in yank speak).
    Pippin,
    I asked about J section recently at a local bearing supplier (ABC Bearings, Silverwater) and they said there would not be a problem.
    I was given a photocopied page from a Contitech catalogue showing lengths available. Just looked now and 381 is a standard length. Apparently the belts are made as "sleeves" having dozens of ribs, and someone (presumably the supplier) just parts off as many ribs as you want. For a given length, pricing is per rib. Contitech is part of the Continental rubber conglomerate.
    Cheers,
    Bill

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    Quote Originally Posted by morrisman View Post
    I see carbatec has them but the price Power Twist Link V-Belt 1.2m : CARBA-TEC

    Opinions on the PM forum seem to express that these belts are not as good as first thought . Mike
    I have no great experience with link belts, but I can offer that Churchill thought they were OK to use on their surface grinders.

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    Quote Originally Posted by morrisman View Post
    Hi

    Everyone seems to give the linked belts top marks - smoother running . I would like to try using it in B section size but it appears to be fairly hard to find . Does anyone know of a supplier in Melbourne ? Mike
    No. But you can order it from the UK for $32 per meter, plus $12 postage. Several times I was surprised to have stuff from the UK arrive in Melbourne faster than stuff from Sydney.
    NUT Link V Belt Link Belting B Section 17mm Wide Link Type Lathe Machine Belt | eBay

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    I currently use cogged belts which reduce vibration considerably on gear with smaller pullies. It allows the belt to conform to a smaller dia during rotation.

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    Default COGGED

    Quote Originally Posted by eskimo View Post
    I currently use cogged belts which reduce vibration considerably on gear with smaller pullies. It allows the belt to conform to a smaller dia during rotation.
    Some people are using automotive type V belts , the "cogged " type, with good results .

    My request is based on my recent experience with my PREMO lathe . Works fine and smooth on the lower 4 speeds , eg with the motor belt fitted on the twin section motor / counter pullies - on the low speed pullies. But when the belt is on the higher speed pullies a vibration is apparent . By fitting a new belt and loosening the tension, things improved . I also static balanced the 14" twin alumimium counter pulley , this has improved things more to the point where the lathe is useable. The B section V belt on the headstock cone is probalbly 30 years old ! I have to remove the spindle as the small back gear gear has 2 broken teeth . I need to make up a pusher device using a bottle jack, to push the spindle out , it has tapered roller bearings . Mike

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    My bandsaw has a small belt, smaller than A section. SPZ? Anyway it was a standard v belt when i got it, a bit old and hard. The thing run as rough as, i thought it was a balance issue with one of the 5 step cast pulleys. Got a new cogged belt and the thing is as smooth as, i could not believe the difference it made.

    The Holbrook runs 3 B section linked belts from the gearbox up to the head. They seem to be very smooth, even at high speeds. At certain speeds they do seem to "rattle" a little bit, i wonder if it is 2 of the belts hitting each other.

    Ew
    1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.

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    I have been looking at linked belts ad it seems there are a few designs, the nut style with pin, the carbatec type which seems to twist lock and quite a flat one from the US which also has no pin. Anyone trialled the different types? The US one looks like it would run smoother.

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    Quote Originally Posted by Burnsy View Post
    I have been looking at linked belts ad it seems there are a few designs, the nut style with pin, the carbatec type which seems to twist lock and quite a flat one from the US which also has no pin. Anyone trialled the different types? The US one looks like it would run smoother.
    Burnsy...unless the belt you require is very small in length (may not be available), get a cogged V belt...you wont be disappointed and are readily available

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    Quote Originally Posted by Burnsy View Post
    I have been looking at linked belts ad it seems there are a few designs, the nut style with pin, the carbatec type which seems to twist lock and quite a flat one from the US which also has no pin. Anyone trialled the different types? The US one looks like it would run smoother.
    I use Fenner twistlock belting. Works fine for me. Not cheap though. I think I bought the last length from an eBay seller - ohioBladeMan IIRC. In fact I may have to use some of my B section soon to avoid removing a spindle from a milling machine. PDW

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    A guy on youtube called Matthias Wandel just did a review and comparison of v belts vs linked belts. Everything I have seen from his videos has been pretty darn thorough.

    His take on them is that the vibration and noise comes from the normal v belts taking a set when they are left on the smaller pulleys for too long. As you ramp up the speed on them again, that is usually the cause of the problems.
    He got around this by getting a more flexible v belt. Its worth a google.

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    Quote Originally Posted by PDW View Post
    I may have to use some of my B section soon to avoid removing a spindle from a milling machine. PDW
    I am not a big fan of the stuff (prefering cogged type) but thats where Link belting really comes in handy. It can be installed where spindles pulleys etc etc may need to be removed to allow fitment

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    Quote Originally Posted by Ben Dono View Post
    A guy on youtube called Matthias Wandel just did a review and comparison of v belts vs linked belts. Everything I have seen from his videos has been pretty darn thorough. His take on them is that the vibration and noise comes from the normal v belts taking a set when they are left on the smaller pulleys for too long. As you ramp up the speed on them again, that is usually the cause of the problems.
    This issue has been known ever since V belts were introduced and was even one of the arguments used by the flat belt brigade against changing from large flat belts to smaller V belts.

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