Automotive 6&4 rib serpentine pulley profile.

Thread: Automotive 6&4 rib serpentine pulley profile.

1. 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!

2. 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:{(

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

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

5. 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!

6. 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)

7. I hope you have Excel

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

8. Full profile dimension drawing here. page 4

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

9. Serpentine belt

Hi,

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

Ernie

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

11. 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!

12. Originally Posted by aaron p
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.

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