The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
March 29, 2024, 11:55:43 am

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
350646 Posts in 28563 Topics by 6811 Members
Latest Member: Bren
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Technical stuff
| | |-+  oil pump machining for oring
« previous next »
Pages: [1] Print
Author Topic: oil pump machining for oring  (Read 2241 times)
j-f
Hero Member
*****
Posts: 1593


Jean-François


WWW
« on: May 01, 2020, 18:10:06 pm »

Hi,

Can somebody tell me the size of the groove to add an oring to a oil pump?

Oring is 70mm x 1.75mm.

Thanks  Wink
Logged
PPRMicke
Sr. Member
****
Posts: 369



WWW
« Reply #1 on: May 01, 2020, 18:57:02 pm »

same as O ring Width 1.75 deep 0,87mm  (can go down to 1mm)
/// M
Logged
j-f
Hero Member
*****
Posts: 1593


Jean-François


WWW
« Reply #2 on: May 01, 2020, 19:01:31 pm »

same as O ring Width 1.75 deep 0,87mm  (can go down to 1mm)
/// M

Thanks,

So it sits flush with the pump case and seals with oil pressure?
Logged
samotorsport
Sr. Member
****
Posts: 285



« Reply #3 on: May 01, 2020, 19:25:52 pm »

No leave it out a bit , if you go down lets say to 1 mm with the groove , it still sticks out 0,75 mm if the o ring is a 1,75 thick one .
If it is flush with the pump case it will not seal .
Logged
RMS Boxer Service
Sr. Member
****
Posts: 308


WWW
« Reply #4 on: May 02, 2020, 18:35:11 pm »

The groove must be wide enough to allow the O-ring to be crunched when installed. If the groove is too narrow
the O-ring will have nowhere to go/expand and it will be cut when installed If the groove is too wide the O-ring will
loose crunch as it can wobble/snake in the groove.
Sorry for my bad tech terms, but try Google "O-ring groove design"

Here is a good site:
https://www.sealanddesign.com/page/o-ring-groove-design-metric

/Rolf
« Last Edit: May 02, 2020, 18:37:46 pm by RMS Boxer Service » Logged
j-f
Hero Member
*****
Posts: 1593


Jean-François


WWW
« Reply #5 on: May 03, 2020, 19:22:20 pm »

The groove must be wide enough to allow the O-ring to be crunched when installed. If the groove is too narrow
the O-ring will have nowhere to go/expand and it will be cut when installed If the groove is too wide the O-ring will
loose crunch as it can wobble/snake in the groove.
Sorry for my bad tech terms, but try Google "O-ring groove design"

Here is a good site:
https://www.sealanddesign.com/page/o-ring-groove-design-metric

/Rolf

That's what I've read, but being not a machinist, I wasn't sure I understood correctly  Wink
Thanks for the info.
I don't know if it is worthwhile to do it, but on the other hand, not a big job to do.
Logged
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!