What are bearing bases that are cast as part of the machine called?

The term for bearing bases that are cast as part of the machine is "integrated bearings." This means that the bearing and its housing are designed as a single unit from the beginning, typically created during the casting process. Integrated bearings provide several advantages, such as improved alignment and reduced assembly time since they do not require separate bearing housings to be installed once the machine is assembled. This design can lead to overall improvements in the robustness and performance of the machinery, as it minimizes potential misalignment issues and contributes to the structural integrity of the machine itself.

Other options refer to different types of bearing configurations. Separate bearings are distinct units that require separate installation, split bearings can be disassembled for ease of maintenance or bearing replacement, and universal bearings refer more to bearings that can fit in various applications, rather than to the specific design approach of being cast as part of a machine.