Toleracing of center distance with internal gear

cherish

Hi all,
first to say sorry if the question is repeated second time
I've order a couple of internal gears from Rollix as picture below:

The calculation from them for internal gears with center distance C=331.494 (mm)
Backslash at center distance maxi: 0.98 (mm)
Backslash at center distance mini: 0.53 (mm)
module of bearing & pinion: m=10
number of teeth: bearing=79, pinion=13
pitch dia: bearing= 790, pinion=130
...
The trouble now i'm facing is chosing tolerancing grade of center distance on bores to fit with shaft of pinion & bearing, more illustration on picture below:

Does any one know which of standard can be used to look up or formular to calculate the tolerancing grade of center distance in this case pls give me a help
Thanks a lot for your reading this asking

PaulS1950

The pitch diameters should be tangential.
Use that diameter to lay out your centers for the bearings and shafts.