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IndustryArena Forum > WoodWorking Machines > DIY CNC Router Table Machines > Ballscrews or rack and pinion? What module of rack and pinion is the best?
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  1. #1
    Join Date
    Oct 2010
    Posts
    16

    Lightbulb Ballscrews or rack and pinion? What module of rack and pinion is the best?

    Hello guys , i am building a cnc router, my Y-axis travel gonna be 2600mm. First i decided to use a ballscrews RM2505 but now i am scared that my travel is too long and my ballscrews can cause vibrations on such a long distance. What is ur recommendation should i go with rack and pinion and what module ? Is a rotating ball nut rational to use in this case? Thanks in advance !

  2. #2
    Join Date
    Jan 2007
    Posts
    1795

    Re: Ballscrews or rack and pinion? What module of rack and pinion is the best?

    the 5 mm lead too little, with 10 mm lead you can reach 300 ipm safely..

    there are larger diameter, and larger lead screws..
    to achieving a decent speed screws might too expenses..

    however screws are keeping their backlash better than gears..

    2525 L1100MM Ball Screw Dia 25mm Lead 25mm High Lead ballscrew with Ballnut | eBay

    example you can buy 40 mm dia and 40 lead screw.. with 3 and 6 start..

    it means with a simple stepper with 500 rpm you can reach 20 meter paer min, that is 1000 ipm...
    with 500 rpm this screw wont wip as you think..

    with servo it can be 6 times more.. the only issue is your wallet..

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