What is you job description ? Designing rotating machinery ? For sale, or for your company's use.
What operating temperatures ?
Plenty of devils in these details, that the catalog data sometimes fails to emphasize.
Bearings, bearing fits, seals, couplings, balancing flexible and rigid rotors, support structures, grout .
ASHRAE and API have some EXCELLENT references to help design and specify reliable equipment, and avoid some expensive misadventures.
There are several boards on line where vibration analysts share their tales of woes and their victories,