Nc50 crank bearings

just installed a new set of bearings on a treats stuffy crank. Heated the case bearings won't go. So I messured 2mm differince in bearing od. and case Id. any sugetions?

Re: Nc50 crank bearings

* the bearing outer race is 2mm bigger than case Id.

Re: Nc50 crank bearings

Wrong bearings. Measure your old ones. I'd contact treats to see if the crank is even correct.

Re: Nc50 crank bearings

The right crank wrong bearings. Looking for the right size though. They sent me 6004 c-3's

Re: Nc50 crank bearings

Jack Rutherford /

those sound like the right bearings - freeze the bearings and heat the case (edited)

Re: Nc50 crank bearings

> Jack Rutherford Wrote:

> -------------------------------------------------------

> those sound like the right bearings - freeze the bearings and heat the

> case

It wont make up 2mm difference. Somethings wrong.

Potential interference fit will be between −0.001 mm and −0.042 mm NOT 2.0 MM (edited)

Re: Nc50 crank bearings

Jack Rutherford /

6004 c-3's Have worked for me several times. Maybe there’s not a 2mm difference.

Re: Nc50 crank bearings

> Jack Rutherford Wrote:

> -------------------------------------------------------

> 6004 c-3's Have worked for me several times. Maybe there’s not a 2mm

> difference.

Bearings could be wrong size Chinese junk.

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