Record triple bearing BB bearings size?

[foz]

Does anyone know what size bearings are used in the Record Triple Bearing BB like the one in the photo? Are they a Campagnolo special size, or can I get replacements from any decent bearing supplier?

Thanks, Andy

 

[one-eyed_jim]

I think they use one 61903 2RS and two 61803 2RS. They're not proprietary: the 61903 is a very common bottom bracket bearing. The 61803 is also fairly easy to find.

I still have one of these (BB11RECART) bottom brackets somewhere, so I'll see if I can dig it out to double check.

 

[foz]

Thanks Jim! I also have one of these, but at least one of the bearings is in need of replacing and it's always good to have confirmation of my own measurements. I didn't take it apart yet, but if you could measure yours too then that would be great

Thanks, Andy

 

[one-eyed_jim]

I found the BB this morning, and it's as I remembered.

The big single bearing on the left is a 61903 (also known as 6903) 2RS - 17mm x 30mm x 7mm. The two smaller bearings on the right are 61803 (6803) 2RS - 17mm x 26mm x 5mm.

In the bike trade the 61803 is listed as a replacement for Hope hubs, but of course you'll find better deals from a bearing supplier. Plenty of options on eBay too.