 Rear Wheel Bearing Interference Fit |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| wndsrfr |
  Jul 24 2011, 07:09 PM
Post
#21
|
|
Senior Member  Group: Members Posts: 1,430 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region 
 |
So, now with the trailing arm off & old bearing out & new timken in freezer I started to measure with my digital calipers & get:
Trailing Arm recess=2.950" room temp (95F today) Bearing O.D. =2.9525" cold (maybe 20F) Interference = .0025" Is 2 1/2 thousandths OK? I'll heat the trailing arm recess prior to installing, but bet I'll only gain maybe a thousandth, leaving 1 1/2 thou interference for the press to overcome.... But, the next question is more disturbing...the hub to ID of the bearing is: Hub O.D. = 1.6520" warm Bearing I.D. = 1.6475" cold Interference = .0045" Of course I've put the hub into the freezer and will wait for the bearing to come to room temp prior to assembly, but I'm guessing I'll still be dealing with .003" interference there and that seems like a lot....need someone with bearing fit tolerances to chime in here.....anyone? |
   |
 
|
Posts in this topic
wndsrfr Rear Wheel Bearing Interference Fit Jul 24 2011, 07:09 PM
sixnotfour When is the last time your calipers were calibrate... Jul 24 2011, 08:24 PM underthetire No matter what calipers you get, they are only goo... Jul 24 2011, 08:24 PM
wndsrfr
No matter what calipers you get, they are only go... Jul 25 2011, 07:27 AM SLITS I never heated the trailing arm installing bearing... Jul 24 2011, 08:26 PM draganc
I never heated the trailing arm installing bearin... Jul 24 2011, 10:27 PM sean_v8_914 thats funny...but true.
fat peice of steel and a d... Jul 24 2011, 08:42 PM PRS914-6 The "proper way" would be to use a hydra... Jul 24 2011, 09:44 PM sean_v8_914 I have done many of these. it only takes some tapp... Jul 25 2011, 07:14 AM PRS914-6
removing the trailing arm is a waste of time. the... Jul 25 2011, 08:13 AM SirAndy My worries are this.....People in the future do a ... Jul 25 2011, 01:14 PM Jeffs9146
:agree:
The all thread method is way better t... Jul 25 2011, 10:27 AM 6freak Bearings and a hammer :WTF: .....if you force it... Jul 25 2011, 11:20 AM Eric_Shea Proper way is to press the arm down onto the beari... Jul 25 2011, 11:30 AM SUNAB914 Another proper way, freeze bearing, put grease out... Jul 25 2011, 12:11 PM mgphoto Picked up this kit last year, works with the hubs ... Jul 25 2011, 12:16 PM SLITS
Picked up this kit last year, works with the hubs... Jul 26 2011, 12:18 PM 6freak looks like a nice set ....wish i had one like that... Jul 25 2011, 12:50 PM wndsrfr
So, now with the trailing arm off & old beari... Jul 26 2011, 09:06 AM rjames
No beating/tapping required. if you freeze the b... Jul 31 2011, 12:47 PM Eric_Shea
2 times outta 10. Very rare. Jul 31 2011, 07:21 PM rjames
2 times outta 10. Very rare.
Maybe I should ... Aug 2 2011, 12:36 PM  |
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:
|
Lo-Fi Version | Time is now: 1st June 2024 - 02:11 AM |
Invision Power Board
v9.1.4 © 2024 IPS, Inc.