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H145 Rear Axle Wheel Bearing (sealed)
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Enquiring minds want to know if a sealed, permanently lubed rear axle bearing for our 1200s exists. It's a bit of a PITA to tear into the rear end every 30k miles to lube the OEM bearings, so a permanently lubed bearing would be a nice upgrade.

Posted on: 2021/11/1 0:17
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'73 1200 coupe vintage racecar
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Re: H145 Rear Axle Wheel Bearing (sealed)
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2001/5/3 7:04
From 48 North
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great question

It is a standard ball bearing
* 62x30x16 (type 115 1970-1972)
or
* 72x30x19 (type 114 1973)
Axle Bearing tech article

For the late 1200 these are "sealed". Does that mean permanently lubed?

NTN bearing
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jpg  411_42002.jpg (42.66 KB)
174_617f39e0721a0.jpg 600X526 px

Posted on: 2021/11/1 0:50
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Re: H145 Rear Axle Wheel Bearing (sealed)
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If i recall correctly the orginal ball bearing isn't sealed on either side, so the 90W from the diff eventually washes away the packed grease. i figure the bearing wears slightly, then the seal (in the housing) is slightly compromised and so lube gradually mixes into the bearing

Groove is where the housing seal rides
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Grease packing
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These replacements for the small bearings (1970-1972) are sealed on one side. The other side goes up against the brake backing plate so that's good - assuming they are installed with the seal facing in. They still gotta be packed but i reckon the grease will stay put for longer

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jpg  62x32x16 axle bearing PICT0005.jpg (103.67 KB)
174_6182339e671d0.jpg 1024X768 px

Posted on: 2021/11/3 6:59
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