Rotary joint without ball bearings

The invention consists in a rotary joint, for liquid transfer lines, without ball bearings.

Title of the patent Rotary joint without ball bearings
Thematic area Mechanical, civil and environmental engineering
Ownership Alma Mater Studiorum - University of Bologna
Inventors Gianfranco Enrico Campari
Protection Italy
Licensing status Available for licensing agreements
Keywords Coupling, anti-friction treatment, absence of ball bearings, low maintenance, high resistance
Filed on Sep 13, 2016

The invention consists in a rotary joint for transfer lines of liquid without ball bearings. The movement between the surfaces in contact, discontinuous in time and at low speed, is provided by an anti-friction surface treatment. Compared to ball bearings, the increased contact surface ensures a greater resistance to twisting forces. The coupling is characterized by ease of assembly and a low maintenance.

Advantages guaranteed by the invention are: minors manufacturing costs, ease of assembly, longer life and reduced maintenance, a better overall performance due to the increased resistance against twisting forces.