When building things that move using a waterjet, you’re not limited to just bearing blocks. One common problem faced when building an electric vehicle is mounting the motor to an existing frame. Waterjet cutting allows you to easily make custom motor mount plates that match the bolt pattern on the motor, as well as the mounting points on the frame.
Here is a great example from Roberto Melendez of MIT. In building the Cholocycle electric motorcycle, they needed a way to mount their 25 horsepower electric motor to a Kawasaki motorcycle frame. With waterjet cutting, they were able to construct mounting plates which fit both the motor and the frame perfectly.