Bearing housing tolerance limit
Bearing housing tolerance limit
(OP)
Hi,
I would like to confirm the tolerance limits for a ford fiesta bearing. I am new to this so please bear with me. The bearing has an outer diameter of 72 mm, inner diameter of 37 mm and a width of 37 mm. It is a ball bearing. From what I found (here http://www.nskamericas.com/cps/rde/xbcr/na_en/CNSK...), the housing tolerance is of category N7 and from another source (http://www.ntn.co.jp/english/products/catalog/pdf/...) the housing tolerance limits are: +0.039/-0.004 mm.
I would really appreciate it if someone could confirm this for me.
Thanks
I would like to confirm the tolerance limits for a ford fiesta bearing. I am new to this so please bear with me. The bearing has an outer diameter of 72 mm, inner diameter of 37 mm and a width of 37 mm. It is a ball bearing. From what I found (here http://www.nskamericas.com/cps/rde/xbcr/na_en/CNSK...), the housing tolerance is of category N7 and from another source (http://www.ntn.co.jp/english/products/catalog/pdf/...) the housing tolerance limits are: +0.039/-0.004 mm.
I would really appreciate it if someone could confirm this for me.
Thanks





RE: Bearing housing tolerance limit
pages 3 thru 7 at the link you provided
RE: Bearing housing tolerance limit
Thanks
RE: Bearing housing tolerance limit
A regular electric motor has a rotating shaft and inner race/ring, and stationary outer race/ring.
A 1959 Chevy Impala front wheel has a stationary inner ring and a rotating outer ring.
In each case the load (gravity) is essentially one directional for the stationary ring, so it can be designed with a slip fit in/on it's "seat" (the shaft/housing.)
However in each case the load varies direction relative to the rotating ring, so they must be an interference fit with their seat, to prevent creep and attendant wear and destruction.
If there are multiple loads or with a vertical shaft then it is possible to end up with loads varying direction for both rings, which requires clever compromises to permit adjustment or assembly.
RE: Bearing housing tolerance limit
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Bearing housing tolerance limit
Please let me know if I am wrong here: bearings in steering knuckles usually have stationary outer rings and rotating inner rings which means they have to be fitted with a given interferance on knuckle center hole. In this case, the tolerance will be of category N7 (interferance of 0.039 mm and clearance of 0.004 mm) as I mentioned in my first post.
RE: Bearing housing tolerance limit
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Bearing housing tolerance limit