Aktiebolaget Skf

Giuseppe Guala

Massimiliano Ribet

Maurizio Martinetti

Paul Meaney

Luca Morero

Maurizio Patania

Michael Zakrzewski

A backing ring assembly is for railway axles and includes a backing ring and an annular insert having L-shaped axial cross sections. The insert includes a sleeve portion fitted to a radially outer cylindrical surface of the backing ring, which delimits a first axial section thereof. The annular insert sleeve portion includes first and second axial sections hingedly connected by an intermediate, reduced thickness section designed to form a plastic hinge. The first axial section of the sleeve portion projects axially from the first section of the backing ring, which is provided with an annular projection designed to induce elastic deformation of the reduced thickness section to ensure that the second axial section of the sleeve portion is always coupled with the cylindrical outer surface of the backing ring first axial section by an interference fit.

Universal fit backing ring assembly for railway axles

A rolling bearing unit provided with a radially outer ring having an assembly groove, two radially inner rings, two series of rolling elements interposed between the radially outer ring and the radially inner rings and defining between them a first internal grease reservoir. The groove is arranged in an axially intermediate position with respect to the two radially inner rings and a grease dispensing device is housed inside the groove of the radially outer ring and is in turn provided with a second grease reservoir formed inside the radially outer ring and communicating with the first reservoir via the groove. A permeable retaining wall housed is inside the groove so as to retain the grease inside the second reservoir and allow it to flow out towards the first reservoir during operation of the bearing unit, dispensing it in a controlled manner.

Grease dispensing device for rolling bearings

A bearing unit provided with a rolling bearing having a radially outer race, two radially inner races, a ring of conical rollers arranged between the radially outer race and the two radially inner races, and a device for retaining grease and metering oil housed inside a groove of the radially outer race and having an annular wall arranged transversely with respect to the rolling bearing and acting as barrier for the flow of grease and provided with a plurality of through-openings for retaining the grease and allowing the oil to pass between the two rings of conical rollers in any operating condition, and also with a plurality of radial vanes engaged with the annular wall for retaining the grease.

Grease retaining and oil metering device for a rolling bearing unit

A rolling bearing includes a stationary radially outer ring, a groove, at least a rotatable radially inner ring, at least a plurality of rolling bodies, interposed between the radially outer ring and the radially inner ring and a grease dispenser device configured to be accommodated within the groove of the radially outer ring. The dispenser device is further provided with a radially outer crown on which at least a radially inner protrusion is rigidly fixed, the protrusion having a barrier function against a flow of grease.

Growing community of inventors

Pinerolo, Italy

Giuseppe Guala