limits and fits

[Walms]

My Machinery’s Handbook only covers up to 20” dia. shafts and I'm looking for an H7/h6 fit between the O.D. and I.D. of two rings. The nominal dia. is 120". Can anyone recommend the amount of clearance as well as a suitable tolerance for a standard shop to turn something like this?
The fit is a locational clearance. Any help will be greatly appreciated.

 

[gearguru]

120" = 3048mm

3048H7 = 3048mm/3048.21mm = 120.000"/120.0083"


3048h6 = 3048mm/3047.865mm = 120.000"/119.9947"


I hope it helps!
gearguru

 

[diamondjim]

Walms,
Hope you have some nice radii or large
chamfer to get these together. The two
rings will probably have considerable
runout.

 

[Walms]

Will do, thanks for the input guys.

 

[gearguru]

My pleasure
gearguru