Bearings for the diameter of 25, outer diameter 37, thickness 7, what kind of bearing seat, what is the size?
As far as you say, bearing size 25*37*7, you can determine the deep groove ball bearings 6805, the problem is that 6805 deep groove ball bearings are not suited to bearing seat, with the bearings are spherical bearings. So please check the products you need.
Is there no bearing model? 61805-2RZ this model?
Without such a small bearing seat, you can make one yourself according to your own needs