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    Thread: Should my new rear rotors have had bearing rings pre-installed?

    1. Moderator silverspeedbuggy's Avatar
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      07-27-2012 09:36 PM #1
      I bought new rear rotors today, took the pass one off, then noticed the new one does not have the rings for the bearings. Should they have had them? Can I remove the ones off the old ones?

      Old one with ring:


      New one (no ring):

    2. Member ANSAracingb's Avatar
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      07-27-2012 10:20 PM #2
      Most new brake rotors/drums will not come with the bearing races installed. They assume you're going to replace the wheel bearings anyway, which come with new races.

      The are easy enough to remove, with a punch from the back side. Installing is a little trickier as you have to ensure you are installing them level (but you can use the old race to help by placing it opposite the new one from the outside and tapping it in; or use a hydraulic press).

      I would not recommend re-using the old races with new bearings, unless you're in a pinch. This may cause the bearings to get worn prematurely.

      edit:
      <---- 2000th post woohoo
      Last edited by ANSAracingb; 07-27-2012 at 10:23 PM.
      -Bryan

    3. Member crazyaboutrocs's Avatar
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      07-27-2012 10:29 PM #3
      At $20 for per wheel, it's a good thing to replace. If you don't have a press, I've had good luck heating the rotor up in the over(or grill) and then sometimes the race will drop right in, or at most needs a light tapping in.

    4. Moderator silverspeedbuggy's Avatar
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      07-27-2012 11:42 PM #4

    5. Member 83mk2scirocco's Avatar
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      07-28-2012 01:12 AM #5
      Post count,post count,
      I see I have never bought new rotors.All thought it makes sense to replace the bearings too,...
      They are called the outer bearing race.

    6. Member ANSAracingb's Avatar
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      07-28-2012 01:40 AM #6
      Quote Originally Posted by silverspeedbuggy View Post
      Yeah that works I guess. I've always tried to use a large socket or spare bearing race flipped upside down instead of just a hammer by itself, but I was always afraid of inserting the race "cockeyed". I guess even if that happens you can always punch it out and re-try.

      Don't forget your wheel seals! Once you put the inner races in pack the inner bearings with grease really well and place in the race. Then install your inner wheel seal by gently tapping into the rotor evenly, with the lip facing towards the bearing.
      -Bryan

    7. 07-28-2012 06:39 AM #7
      German Auto Parts sells them with the race's installed. So if you got the rotors local take them back.
      I have better luck getting all the proper repair parts from GAP, bearings as well, pads, ect.

    8. Member crazyaboutrocs's Avatar
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      07-28-2012 07:55 AM #8
      If I were just using a hammer, I would be afraid of damaged the races. Like ANSA said, it's best to use a socket or something. Also like I said earlier, heating it up in the oven for 15 minutes or so works wonders too.

    9. Moderator silverspeedbuggy's Avatar
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      07-28-2012 12:45 PM #9
      Picked up wheel bearing kits this morning. Look what's baking in the oven:


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