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IndustryArena Forum > Mechanical Engineering > Linear and Rotary Motion > Mixing Preloaded&Standard linear trucks on same rail -pros and cons ?
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  1. #1
    Join Date
    Nov 2008
    Posts
    66

    Mixing Preloaded&Standard linear trucks on same rail -pros and cons ?

    Hi All,

    I've got an assortmentof 8 Hiwin HGH15 trucks with rails for 2 axes.
    4 of the slides are preloaded while the other 4 are standard and are easy to move.

    My questions is : is it bad to mix preloaded with standard trucks on same rail ? I'm thinking of distributing the 4 preloaded trucks for the 2 axes so I have a preloaded truck on each rail -any downsides ? Or is it better to have just only one type of truck on one rail?

    I can distribute them like this for each axis :

    1st rail -1preload+1standard
    2nd rail -1preload+1standard

    or

    1st rail -1preload+1preload
    2nd rail -1standard+1standard

    Which way is better ?


    Florin

  2. #2
    Join Date
    Mar 2006
    Posts
    2712
    Florin, I'd go with the second arrangement. Two preloaded trucks on the guiding rail and two non-preloaded on the second rail. The non-guiding rail/truck assembly would carry some portion of the load as well as carry moment loads to counteract tilting/tipping tendencies.

    Just my $0.02

    Dick Z
    DZASTR

  3. #3
    Join Date
    Nov 2008
    Posts
    66

    clear out a fact

    Just to clear out something :
    the trucks and rails are for the Z and Y(gantry) axes.
    I'm also considering using all the preloaded trucks for the Z, but not sure which axis need preloaded trucks the most, however I guess it's the Z where it's going the be most welcomed ?

    Florin

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