Friction bearing technology
Bearings are one of the core components for gear pumps. The material and design must be carefully selected and coordinated with each other to ensure safe and efficient operation of the pump.
Normally friction bearings are used in gear pumps. With this bearing type, the internal diameter is somewhat larger than the journals stored inside it. The transported medium penetrates into this small area through lubrication grooves through which a hydro-dynamic lubrication film is established from the medium in the bearing. The shaft “floats” in the bearing. For friction bearings lubricated with media, it must be ensured that the lubricating film does not tear. Otherwise the shaft can no longer be lubricated and it results in damage to shafts and bearings. This damage is normally irreparable and results in bearings and shafts having to be replaced.