The use of roller bearings is an absolute exception for gear pumps. Nevertheless, it may be necessary to install roller bearings in the pumps instead of friction bearings. The pumped medium is often the reason for changing from friction bearings to roller bearings.
What is a roller bearing?
Roller bearings are available in various designs, for example as roller or ball bearings.
For gear pumps, we have used roller bearings in the past.
The roller bearings used are hybrid bearings consisting of different components made of different materials.
In contrast to classic roller bearings, hybrid bearings have ceramic rolling elements. They also have an inner ring. The inner ring serves as an inner boundary and cage to hold the ceramic rolling elements in position. It also serves to hold the gear shaft. The ceramic rolling elements absorb the shaft rotation. They transmit the rotational movement and thus ensure smooth operation.
