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Author Topic: Sourcing 500/550/4 Bearings  (Read 434 times)

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Offline Steve Lu

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Sourcing 500/550/4 Bearings
« on: June 23, 2024, 09:32:52 PM »
 Has anyone got a supplier for Needle role bearing 23931323004 on transmission input shaft LHS? Or is there a modification out there to use a bearing from a current supplier?
Thanks 
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Offline HondaMan

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Re: Sourcing 500/550/4 Bearings
« Reply #1 on: June 24, 2024, 09:33:35 AM »
Maybe check here:
https://www.cmsnl.com/honda-cb550-four-1975-cb550k0-usa_model465/partslist/E++05.html
The Honda bearing part numbers changed in 2002-ish for all the SOHC4 bikes, so some of those old numbers don't show up anymore. Now they use a standard bearing classification numbering system across all the bikes instead.
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Offline Oddjob

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Re: Sourcing 500/550/4 Bearings
« Reply #2 on: June 24, 2024, 10:31:34 AM »
Got a lead on a NOS one but their stock list could be out of date so I've asked them to confirm. I'll let you know.
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Offline Steve Lu

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Re: Sourcing 500/550/4 Bearings
« Reply #3 on: June 24, 2024, 12:35:07 PM »
Thanks Fella's for the response. I rechecked CM's site again but showing no stock. I have couple of doner motors I may have to rob, reluctantly. Do you know anyone building race bike power plants that may be using something modified but proven?
Regards
Steve
PS, I'm 12 hours different time zone so my responses are delayed.
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Offline pekingduck

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Re: Sourcing 500/550/4 Bearings
« Reply #4 on: June 24, 2024, 12:37:37 PM »
Have you checked eBay?  Right now, there's a new one in an open bag for about $43 shipped and taxed.
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Offline Steve Lu

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Re: Sourcing 500/550/4 Bearings
« Reply #5 on: June 24, 2024, 03:07:02 PM »
Hi and thanks. Its not a complete bearing unfortunately, needles are missing.
Regards
Steve
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Offline pekingduck

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Re: Sourcing 500/550/4 Bearings
« Reply #6 on: June 24, 2024, 05:54:18 PM »
Just curious, how many needles does it take? It has 8 windows with 2 needles each?
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Offline pekingduck

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Re: Sourcing 500/550/4 Bearings
« Reply #7 on: June 24, 2024, 06:15:50 PM »
I see one with needles missing, but this one looks complete. 

https://www.ebay.com/itm/335358273761
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