Bearings usually have anywhere from to a press fit to a to a light slip fit achievable using ones hands during assembly.
An example would be a wheel bearing on a vehicle, pre front wheel drive,
a truck or a light trailer.
--- an easy slip fit.
Now we don't know if the inner race or the crank is slightly worn?
a precision measurement with a micrometer of the crank will tell you that.
Also after you remove the tighter fit bearing on the other end of the crank, try that bearing on the end that seems loose to you.
(if it is the same number bearing)
that would tell you if it is the bearing that is worn or the crank is slightly undersize.
It is difficult without experience for one to determine what is acceptable.
But the fact that the crank is captive in the block would suggest it can be a loose fit and not a press fit.
Now if the bearing is obviously "loose" on the crank or shows an area on the crank where it has been pounding it into a smaller diameter, of course that is not acceptable.
but just being a light slip fit is not cause for concern.
Sorry for the long explanation.
