EV bearings and seals

Author Topic: EV bearings and seals  (Read 498 times)

Online rodekyll

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EV bearings and seals
« on: May 16, 2018, 11:57:51 AM »
2001 EV.  I want to order parts once, but I can only take one end of the bike apart at a time.  So can someone please give me the universal numbers for the front and rear wheel bearings and swing arm pivot bearngs and seals?  Thanks!

Online Antietam Classic Cycle

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Re: EV bearings and seals
« Reply #1 on: May 16, 2018, 12:44:13 PM »
Swingarm pivot bearings are the same old number from Loop days: 30203. Same with the seals: 30 x 40 x 7.

I think the wheel bearings are 6204-2RS, but best to get a confirmation of that.
« Last Edit: May 16, 2018, 12:53:00 PM by Antietam Classic Cycle »
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Online John A

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Re: EV bearings and seals
« Reply #2 on: May 16, 2018, 03:28:45 PM »
tubeless wheels will use 6304 on the front , tube type use 6204. the rear is the same for both, 6204.
John
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Online Kiwi_Roy

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Re: EV bearings and seals
« Reply #3 on: May 16, 2018, 04:37:25 PM »
And I would change them out with each tire change they are so cheap or at least carry a spare.
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Online Muzz

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Re: EV bearings and seals
« Reply #4 on: May 16, 2018, 04:41:57 PM »
And I would change them out with each tire change they are so cheap or at least carry a spare.

I know they are boggy cheap Roy but would they need changing out that quickly? I have just repacked the Breva swingarm at 24000miles and they still felt ok, although I think I will replace them next time.
Muzz. Cristchurch, New Zealand
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Offline Zoom Zoom

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Re: EV bearings and seals
« Reply #5 on: May 16, 2018, 04:51:51 PM »
I am looking directly at the empty boxes for the front and rear wheel bearings for my '01 EV's that I had. I bought them at NAPA

Front:P63042RSJ
Rear: P62042RSJ

John Henry
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Online rodekyll

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Re: EV bearings and seals
« Reply #6 on: May 16, 2018, 05:05:28 PM »
Thanks guys, that's what I needed.  This EV will be in excellent trim shortly.

Then there's that coca cola bike with the funny script to go through.  What's up with that?  Is it an EV or a Calvin?

Offline guzzisteve

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Re: EV bearings and seals
« Reply #7 on: May 16, 2018, 06:18:59 PM »
It's a CalVin cross dresser.
"Pray through Carlo & your bike shall be healed"
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Offline Tom H

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Re: EV bearings and seals
« Reply #8 on: May 17, 2018, 12:42:06 AM »
Thanks for the info!!

Tom
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Online Kiwi_Roy

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Re: EV bearings and seals
« Reply #9 on: May 17, 2018, 01:23:22 AM »
I know they are boggy cheap Roy but would they need changing out that quickly? I have just repacked the Breva swingarm at 24000miles and they still felt ok, although I think I will replace them next time.
The 6304 / 6204 bearings don't have a proper seal, just the bearings I would certainly change the front when I change the tire the rear ones don't seem to get so much abuse,
I have a picture somewhere of what happens when the front spits out the balls, it made a loud squark and spat out the cage, I had to ride 60 miles back with just one bearing.

Perhaps your Breva has a separate seal, my Griso does they should last.
The swing arm bearings might last the life of the bike with proper greasing.

I think the tapered rollers in my 72 Eldo are original but they too have a separate seal.
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Offline tris

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Re: EV bearings and seals
« Reply #10 on: May 17, 2018, 01:53:03 AM »
Can I correct you Roy - they can be a sealed bearing

The part  numbers that John Henry quoted are for deep groove ball bearings and end 2RS

In bearing maker wording
  • 2RS        = 2 rubber seals
  • 1RS        = 1 rubber seal
  • 2Z          = 2 metal shields
  • nothing   = no seals or shields

Its a long time since I worked for NSK but I don't expect things have changed much

Tris

PS If there is C1, C2, C3 etc. in the part number that has to do with the clearances between the balls and the 2 races where C1 is the tightest clearance.

IIRC normal production is C3 and you specify the C1 where you want low noise
« Last Edit: May 17, 2018, 02:00:42 AM by tris »
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Online Muzz

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Re: EV bearings and seals
« Reply #11 on: May 17, 2018, 03:50:29 AM »

Perhaps your Breva has a separate seal, my Griso does they should last.
The swing arm bearings might last the life of the bike with proper greasing.


I didn't really check the front wheel bearings when I was changing the fork oil. Will check/ replace during the winter lay-off.
Muzz. Cristchurch, New Zealand
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Online John A

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Re: EV bearings and seals
« Reply #12 on: May 17, 2018, 06:28:30 AM »
When I posted, I inadvertly left off the 2RS designation, forgetting they do sell the bearings without seals. Sorry for the confusion
John
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Online delrod

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Re: EV bearings and seals
« Reply #13 on: May 17, 2018, 06:54:28 AM »
Just to make this interesting. My last wheel bearing came from Tractor Supply. They are stocked in the farm machinery repair dept, same aisle as the ditch pump repair parts :huh: :popcorn: :huh: :popcorn:
Doug in Pittsburg KS
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Online Kiwi_Roy

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Re: EV bearings and seals
« Reply #14 on: May 17, 2018, 09:04:26 AM »
Can I correct you Roy - they can be a sealed bearing
 
Tris, I just used the base number from another post
Yes my bearings were 2RS for, these won't last as long as a dedicated lip seal, would you agree?
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Offline tris

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Re: EV bearings and seals
« Reply #15 on: May 17, 2018, 10:06:50 AM »
Tris, I just used the base number from another post
Yes my bearings were 2RS for, these won't last as long as a dedicated lip seal, would you agree?

Yes I would and given the environment these bearings live in (potentially wet and dirty) if I could fit lip seal as well as a 2RS I probably would

Despite the increase in drag of all the seals on the axle  :wink:
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Online Wayne Orwig

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Re: EV bearings and seals
« Reply #16 on: May 17, 2018, 11:11:17 AM »
Can I correct you Roy - they can be a sealed bearing

The part  numbers that John Henry quoted are for deep groove ball bearings and end 2RS

In bearing maker wording
  • 2RS        = 2 rubber seals
  • 1RS        = 1 rubber seal
  • 2Z          = 2 metal shields
  • nothing   = no seals or shields

Its a long time since I worked for NSK but I don't expect things have changed much

Tris

The problem for me is that the 2RS bearing still fail due to seal failure.

I once had someone recommend lifting the seal at every tire change and putting a bit of grease in them. That did not help me, and may have actually made it worse due to seal damage, or the excess grease blowing out under heat.

I would hate to change the bearings at every tire change. I would worry about damage to the soft metal in the wheel hub pulling and pressing in bearings.



« Last Edit: May 17, 2018, 08:38:46 PM by Wayne Orwig »
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Online John A

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Re: EV bearings and seals
« Reply #17 on: May 17, 2018, 01:36:31 PM »
same here, Wayne. I do carry a couple with me in the tool bag, its not only for me, once I helped a riding partner when I happened to have a spare front bearing. it was easier than changing a tire on the roadside.
I got stopped on my way to Italy, TX when I had a rear wheel bearing. Corsicana, TX, I think, on a Cal2. Bearing house had an after hours number listed and they delivered it to the motel. Way before cell phones.
« Last Edit: May 17, 2018, 02:23:04 PM by John A »
John
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Online rodekyll

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Re: EV bearings and seals
« Reply #18 on: May 17, 2018, 02:20:56 PM »
I used my spare bearing to fix a seized adjuster tensioner on a Subaru serpentine belt once.  It's the only time I needed one.

Online John A

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Re: EV bearings and seals
« Reply #19 on: May 17, 2018, 02:26:36 PM »
Tris, I just used the base number from another post
Yes my bearings were 2RS for, these won't last as long as a dedicated lip seal, would you agree?


I do agree, I think the seals don't seal well enough for their environment .taking one out to grease it hurts more than helps in my experience too.
John
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Online Kiwi_Roy

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Re: EV bearings and seals
« Reply #20 on: May 17, 2018, 11:37:28 PM »

I do agree, I think the seals don't seal well enough for their environment .taking one out to grease it hurts more than helps in my experience too.
I wonder if anyone has done a mod to add a lip seal?
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Online John A

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Re: EV bearings and seals
« Reply #21 on: May 18, 2018, 08:13:33 AM »
I've thought about it, front only , rear is protected enough. If you have the extra seal stationary the wheel rubs on it and if you have the seal rotate, it rubs on the fork so unless you make it the right dimension with a way to attach it, it'll cause problems. It's beyond my machining capability. I've been just replacing them " on condition " if I feel ANY roughness when I put pressure on it and rotate it, or if the seal looks compromised, or if it's done a few tire changes. It becomes more critical if the bearings come from places other than Germany or the US, believe it or not.
John
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