Here is my Neu 1512/2D/F motor which I purchased in March 2008. It was getting a lot of slop in the front bearing so I decided to open it up. Here are some pictures of the parts inside the motor. Rotor, spacers, bearings, etc. The rear bearing is flanged and front is not. Rear bearing 5x11x5 flanged, front bearing 5x11x4. As you can see the front bearing was covered in crud and if you look at the picture closely you can see a small ridge forming on the bearing from the force of the shaft pushing on it, almost looks like a flange as well. You can see all the spacers Neu uses to get the rotor centered just right (hand built). I was really surprised by how small the rotor is, amazing the power this thing puts out.
All the parts.
Endbell
Rotor
Dirty bearings
Front (left) and Rear (right) bearings