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Thread: Automotive 6&4 rib serpentine pulley profile.

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    Registered aaron p's Avatar
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    Automotive 6&4 rib serpentine pulley profile.

    Does anyone have a print, or know where I can find the exact dimensions and the radius amount for each rib. Im trying to design a pulley and am lost at this point on where to look for the groove depth's, spacing, and the root and top radii. I dont want to design a belt shreader!

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    "We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........


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    I thought I had that info, but I can not find the automotive specs. Seems I saw it on the Gates site (www.gates.com) someplace!

    I have the industrial specs and if memory serves correctly, there is a slight difference:{(

    Art
    AKA Country Bubba (Older Than Dirt)


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    Just spent 20minutes on the gates site and found everything but sepentine belt dimensions. Its gotta be on there.

    "We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........


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    Machinery Handbook 28th Edition, page 2427 to 2429. I think it is a V- Ribbed belt is'nt it?

    cadfish
    http://www.burgiengineers.com/


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    Thank the lord for the Machinist Bible.
    Im not sure which profile it is though, im thinking profile K because the gates automotive belts all start with a K on the part number. For example, K060375 is a 6 rib, 37-1/2" long belt. ( I used to work at the parts store in high school).

    EDIT:
    Just measured (as close as I can) a pulley I have here off a mustang and im getting a .140" center to center of the grooves. Machinists bible is calling that dimension (pitch) and its for the K Profile. I think we have it!

    "We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........


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    Do you have the belt? If so there are some measurements I can give you to determine the size.
    the (thickness/distance between ribs) of H=(.12/.063) J=(.16/.092) K=(.24/.140) L=(.38/.185) M=(.66/.370)

    cadfish
    http://www.burgiengineers.com/


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    I hope you have Excel

    I Tried taking a Picture and never got a readable picture so see attached.

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    cadfish
    http://www.burgiengineers.com/


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    Full profile dimension drawing here. page 4

    http://mechatronica.eu/en/design-man...%20(38-42).pdf



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    Serpentine belt

    Hi,

    Try the SAE ( Society of Automotive Engineers ) handbook. Any large library should have a copy.

    Ernie



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    Thanks a ton guys. This site saves the day once again!

    "We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........


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    I finally got a few free minutes and drew up generic Poly-V 6 rib pulley. I also found out that Tool-Flo makes formed inserts for these profiles. Can somebody verify my .dxf drawing is correct. .140 groove pitch, and K profile.
    Just want another set of eyes to check it out.

    thanks!

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    "We can't solve problems by using the same kind of thinking we used when we created them", Albert Einstein Thinking outside the box 24/7........


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    Quote Originally Posted by aaron p View Post
    I finally got a few free minutes and drew up generic Poly-V 6 rib pulley. I also found out that Tool-Flo makes formed inserts for these profiles. Can somebody verify my .dxf drawing is correct. .140 groove pitch, and K profile.
    Just want another set of eyes to check it out.

    thanks!
    Hi,

    I manufacture vee pulleys, we have special tips made to produce the correct depth/pitch rad.

    In metric, the pitch is 3.56 and the depth is 6.80.

    Pm me if you need more info ,. cheers chris



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