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Thread: Questions about timing belts & gears

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  1. 04-28-2005, 03:57 AM #1
    rc-cellar
    rc-cellar is offline Registered
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    Jul 2004
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    Questions about timing belts & gears

    OK, I want to add some reduction to my DIY router. I have 360oz servos and THK 5mm pitch ballscrews. (300ipm rapids are scary!!)
    I'm thinking in the 3:1 range, and am checking out the McMaster catalog....

    I'm leaning toward 3/8"width, .2" pitch .... will this be adequate?
    How much backlash can I expect ? (near zero now)
    Will they need to be accurately tensioned ?
    Do I need a tensioner device (spring-loaded idler) ?
    Will they stretch ?
    How often will they need replacement ?

    Any input/ opinions would be much appreciated. Thanks
    If it ain't broke... fix it 'til it is.
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  2. 04-28-2005, 05:09 AM #2
    Al_The_Man's Avatar
    Al_The_Man
    Al_The_Man is offline Community Moderator
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    Check this site, they have design criteria and formula's etc
    http://www.sdp-si.com/
    Al.
    CNC, Mechatronics Integration and Custom Machine Design

    “Logic will get you from A to B. Imagination will take you everywhere.”
    Albert E.
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