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  1. 14-02-2016 #2
    komatias's Avatar
    Lives in Bristol, United Kingdom.
    komatias
    Last Activity: 06-07-2022 Has been a member for 9-10 years. Has a total post count of 559. Received thanks 61 times, giving thanks to others 12 times.
    Quote Originally Posted by reefy86 View Post
    Hi could someone please tell me the correct settings in solidworks for this linear profile rail. its telling me on the diagram that the bolt size is 4.5mm but when using hole wizard im struggling to find the right settings for a tapped hole. or if i just use standard holes and setting dimensions im only seeing radius so do i just half that so if my hole is 4.5mm i enter 2.25mm in the radius dialog?

    cheers

    Ash
    The rails have larger than normal clearance holes to allow them to be adjusted as needed. If your rails have 4.5mm holes and they are screwed in from the top, you will need to make M4 tapped holes. The pilot hole for a tapped M4 using a cutting tap, as opposed to a rolling one, is 3.3mm.

    The pilot holes are always=nominal diameter-1 pitch length. So an M6 will have a 5mm pilot, a M5 uses a 4.2mm pilot etc.
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