1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.
Dismiss Notice
You must be a registered member in order to post messages and view/download attached files in this forum.
Click here to register.

What does a "Range of 0.080 Rad" mean?

Discussion in 'GD&T Standards and Practices - ASME & ISO' started by mrode, Nov 18, 2015.

  1. mrode

    mrode New Member

    Joined:
    Nov 4, 2015
    Messages:
    4
    Likes Received:
    0
    Trophy Points:
    1
    On a recent print we received, there is a designation of a "Range of 0.080 Rad" with an arrow pointing to the center of an indented area similar to: \_____|___|_____/ (Imagine an arrow between to two straight lines.) There may be a hole in that area. We can't tell.
     
    mrode, Nov 18, 2015
    #1
  2. Miner

    Miner Moderator Staff Member

    Joined:
    Jul 30, 2015
    Messages:
    577
    Likes Received:
    493
    Trophy Points:
    62
    Location:
    Greater Milwaukee USA
    RAD is typically used on engineering drawings to mean Radius.
     
    Miner, Nov 18, 2015
    #2
  3. Emmyd

    Emmyd Member

    Joined:
    Jul 31, 2015
    Messages:
    38
    Likes Received:
    38
    Trophy Points:
    17
    Location:
    Tennessee
    They may be referencing a notch to eliminate burrs or some other tooling condition.
     
    Emmyd, Nov 19, 2015
    #3
  4. DavidD

    DavidD Member

    Joined:
    Sep 30, 2015
    Messages:
    24
    Likes Received:
    17
    Trophy Points:
    2
    It sounds like it might be indicating in what area the radius needs be in. In this case, the 0.080 radius (hole?) needs to be between the two straight lines.

    David
     
    DavidD, Nov 19, 2015
    #4
  5. ncwalker

    ncwalker Well-Known Member

    Joined:
    Sep 21, 2015
    Messages:
    261
    Likes Received:
    168
    Trophy Points:
    42
    Location:
    North Carolina
    It is very hard to tell from the ASCII sketch. :)

    I do not disagree that RAD could mean "Radius" but here is an alternate theory. First, look at the phrase "Range of 0.080 Rad". I don't often see a range applied to a radius in this fashion, and my experience is the common designation of a radius is just "R" and not "Rad". It could be that this is "radians" which would be about 4.5 degrees.
     
    ncwalker, Jan 13, 2016
    #5
  6. Jamie Lill

    Jamie Lill Member

    Joined:
    Mar 17, 2016
    Messages:
    35
    Likes Received:
    1
    Trophy Points:
    7
    When in doubt ask the customer for a written reply. Not all customers can withe the language of engineering drawings. They add in there own words
     
    Jamie Lill, Apr 1, 2016
    #6
    hogheavenfarm likes this.