Threaded 1' headset caged bearings

Posted on Mon 4th, December 2023

• #1

Stefano

Hello , does anyone knows the dimensions of caged bearings for a 1' threaded headset?

I am doing a complete restoration on a 70s bike.

I would like to order good quality bearings from SKF, so I need to know the size specs.

Many thanks in advance
• #2

TooTallTim

Best to just measure the old ones, but usually 1" caged bearings are 1″ Headset Cage (5/32″ Bearings) : 37mm Outside Diameter
• #3

midlife

Depends on the headset, some 3/16 and some 5/32. Which headset is it? Weldtite do both sizes iirc.
• #4

RussyJ20

Use loose, stick them in with grease, just as good
It's what I did when couldn't source any caged ones near me
• #5

Stefano in reply to @TooTallTim

It seems this is the case! 5/32, 30mm inner diameter and 37mm outside diameter. In total 16 ball bearings.
• #6

lynx in reply to @midlife

Do weldite supply grade 25 or 10 bearings ;)

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