What is the design temperature and pressure of HX-15 bushing? - Same as equipment
What will be the effect of cooling water shutdown on bushing? - Lubrication to bushing will be affected
How long will it sustain without cooling water? - No idea. No cooling water condition is not recommended at all.
What are the required min/max and normal temperature, pressure and flow of cooling water to bushing? - T: 20-30 deg C, Pr: ~ 1 bar, Flow: ~ 1 m3/h