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    1. ROBOT FORUM
    2. Questions
    3. Chain Sprocket or Timing Belt Pulley
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    Aravinth Kumar
    Feb 15, 2020

    Chain Sprocket or Timing Belt Pulley

    Why you're using Chain Sprocket transmission technique instead of timing belt and pulley in J3? Any specific reason.

    3 answers1 reply
    0
    1
    Chris Annin
    Feb 24, 2020

    I tested a few low profile belts and found they stretched too much. I didnt want to make the arm any wider and was looking for something low profile so I decided on a small 6mm chain.

    Joseph
    Mar 23, 2020

    GT3 and similar belts stretched too much? Surprising, I read they are industry standard for some CNC and regarded as a rigid link

    1
    Aravinth Kumar
    Feb 24, 2020

    Thanks for the reply. I am planning to use GT or SM type timing belt and pulley instead of XL type for all three joints J1, J3 and J4. Whether it will workout?

    1
    Joseph
    Mar 23, 2020

    If cost is an issue like it was for me in Australia, maybe try your local engineering supplier. I was looking on ebay and aliexpress at first... our local supplier was actually a lot cheaper, statewide bearings. I got 10ft of it for $30, it was over $100 from other places