 '72 Rear Axle Ballbearing Sizes, 3 Bearings have 17.5mm balls, 1 has 16mm? |
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| cassmcentee |
 Apr 25 2020, 02:42 PM
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Member  Group: Members Posts: 180 Joined: 12-July 18 From: Squaw Valley, CA Member No.: 22,304 Region Association: Central California 
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Just finished learning how to disassemble and assemble the Rear Axle Bearings.
Took me a day to find the trick to the puzzle. But one of these bearings is just slightly different from the other 3 It has 16mm ballbearings with it's proper race The other three have 17.5mm ballbearings with the corresponding races As seen in the picture I found it strange, is this common?    |
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Replies(1 - 2)
| 914Sixer |
Apr 25 2020, 03:12 PM
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914 Guru Group: Members Posts: 8,882 Joined: 17-January 05 From: San Angelo Texas Member No.: 3,457 Region Association: Southwest Region
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Guessing the smaller one is the money saving version. Years back I started comparing the quality of the rear bearings with different results. In the time period that the originals were made there was only one standard. Now the bearings come in good, better and best.
According to Blind Chicken Racing CV 101 the 16mm ball size is used in stock VW Beetle 94mm CV's( same size as 914's). 17.5 balls were used in 100mm Type 4 CV's. VW Bus and 924,944 use 20mm balls. The more angle of the axle the larger the balls. |
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| cassmcentee |
Apr 25 2020, 03:18 PM
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Member Group: Members Posts: 180 Joined: 12-July 18 From: Squaw Valley, CA Member No.: 22,304 Region Association: Central California
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Thanks Mark!
That's some great information So the 16mm was inserted post factory then Those ballbearings are pretty worn as well |
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