Corrosion: no, thank you!

Technical data

• What was needed? A ball bearing that prolonged the crankshaft's service life
• Requirements: freedom from maintenance and corrosion, resistance to acid
• Material: xirodur B180
• Branch of industry: tank technology/tank systems
• Success for the customer: soluzioni tecnologiche per impianti carburante could significantly extend their maintenance intervals by switching from conventional metal bearings to xiros polymer ball bearings with stainless steel balls.

The application:the flow sensor is basically a hydraulic engine powered by petrol that controls the pulse encoder so that the calculated price and the actual output correspond as exactly as possible. The flow sensor is moved by using the pressure of petrol extracted with a group of pumps. The cyclical volume amounts to 500cm³. Both cylinders work forwards independently of each other, whereas they communicate when they work backwards, as they fill the intermediate chamber.  

Problem

Petrol pumps at gas stations require frequent maintenance in order to guarantee that customers can be sure that the spent fuel volume actually corresponds with the displayed fuel volume. The main bearings are continuously immersed in petrol. Conventional bearings are partially or totally destroyed by galvanic corrosive reactions.

Solution

For soluzioni tecnologiche per impianti carburante, polymer ball bearings from the xiros product range with stainless steel balls are the perfect solution: they are maintenance-free and resistant to acid and corrosion, which also prolongs the service life of the crankshaft.