electricpete
Electrical
- May 4, 2001
- 16,774
For a bearing like a 6318 / 90BC03, the tolerance range on the bearing bore is 3.5425 - 3.5433.
If you're evaluating an undersized shaft that's a pretty big range.
We sometimes pull all of ours out of the warehouse and use the smallest one. But that doesn't always work, recently the smallest out of 3 of those 90BC03 bearings was 3.5432 average bore according to our ace machinist.
I'm wondering if there's a way to approach this on future work to have the best chance of NOT having to rework the shaft (by having the smallest bearing bore within tolerance).
Has anyone heard of any manufacturer or distributor that sells bearings based on their range within the tolerance?
If you're evaluating an undersized shaft that's a pretty big range.
We sometimes pull all of ours out of the warehouse and use the smallest one. But that doesn't always work, recently the smallest out of 3 of those 90BC03 bearings was 3.5432 average bore according to our ace machinist.
I'm wondering if there's a way to approach this on future work to have the best chance of NOT having to rework the shaft (by having the smallest bearing bore within tolerance).
Has anyone heard of any manufacturer or distributor that sells bearings based on their range within the tolerance?