How to choose a stator for a tool
Here are the main stator dimensions for selection/comparison, which will allow you to use it in the electric motor of your grinder, hammer drill, electric saw or other tool.
d2 should not exceed the outer diameter of your anchor winding by more than 1.5-2.0 mm.
d1 should fit into your engine housing.
L2 must correspond to the length of the magnetic plates of the armature winding with an accuracy of 2 mm.

Here you can select a stator according to parameters