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Thread: Tolerancing of sleeve with light transition fit (ID shrink)

  1. #1
    Associate Engineer
    Join Date
    Jul 2016
    Posts
    1

    Tolerancing of sleeve with light transition fit (ID shrink)

    Hello,
    I am having difficulties selecting the correct tolerances for a sleeve (stationary bush) which will be fitted (with a H7/m6 transition fit).
    Attached the situation sketch.


    Some fixed figures:
    Hub outer diameter: 700 mm
    Hub inner diameter: 356 H7
    Sleeve outer diameter: 356 m6
    Bush outer diameter: 340 s6
    (Hub material: S690QL, sleeve material: S420NL, bush material: unknown).


    After the transition fit (H7m6) the inner diameter of the sleeve will be smaller.
    This means that the inner-diameter of the sleeve should be slightly larger than desired.
    The desired ID (thus after installation) of the sleeve should be 340 H7.

    Question:
    What should be the machining diameter and tolerance of the inner-diameter of the sleeve before installation; in order to get a 340H7 ID after the installation with the transition-fit?

    Thanks a lot for your help!
    Regards, Wim
    Attached Images Attached Images

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