In some of the cases, clients think it is important to control the temperature of the bearings, they may hope that the suppliers can be able to integrate a cooling system of the seal box or/and a cooler in the bearing housing. And based on this requirement, what we do is to weld a water tank on the bearing housing like the above pictures show, and there is cooling water circulating to keep the temperature of the bearings at a normal level.
The pump is a high head slurry pump SBH/75E, and for more information pls click: http://www.smepump.com/hi-pressure-slurry-pump/55600154.html.