초록 ▼

To enable a single row tapered roller bearing to receive adequate lubrication at critical surface areas while operating at moderate to high speeds, the thrust rib on the cone of the bearing is fitted with a lubricating ring that in combination with the rib forms an inwardly opening trough and a plur

To enable a single row tapered roller bearing to receive adequate lubrication at critical surface areas while operating at moderate to high speeds, the thrust rib on the cone of the bearing is fitted with a lubricating ring that in combination with the rib forms an inwardly opening trough and a plurality of channels that lead from the trough and over the thrust rib so that the ends of the channels open toward the large diameter ends of the tapered rollers. Alternatively, the lubricating ring may be the thrust rib, with the channels extending beneath it and opening toward the large diameter ends of the rollers. A lubricating oil is introduced into the trough, and the centrifugal forces that are exerted on this oil through rotation of the cone causes the oil to flow through the channels and discharge against the large end faces of the rollers. The flow of oil is sufficient to create an oil film between the end faces of the rollers and the abutment face of the thrust rib, thus facilitating proper lubrication of these critical surface areas, even when the cone revolves at high speeds. The cage, which maintains the proper spacing between the rollers, may be provided with grooves and otherwise configured to catch some of the oil discharged from the channels that extend along the lubricating ring. These grooves, direct the oil axially through the bearing and allow it to flow outwardly onto the cup raceway where it is further distributed to the roller side faces and the cone raceway.

대표청구항 ▼

A tapered roller bearing comprising: a cone having a tapered raceway and a generally axially directed surface at the large end of the tapered raceway; a cup surrounding the cone and having a tapered raceway located opposite to the raceway of the cone; tapered rollers interposed between and contactin

A tapered roller bearing comprising: a cone having a tapered raceway and a generally axially directed surface at the large end of the tapered raceway; a cup surrounding the cone and having a tapered raceway located opposite to the raceway of the cone; tapered rollers interposed between and contacting the tapered raceways of the cone and cup to enable the cone to rotate easily relative to the cup; and a lubricating ring mounted in a fixed position on and against the generally axially directed surface of the cone, the ring forming on the cone a trough that opens toward the axis of rotation for the bearing, the ring further enclosing axially directed channels that extend along the axially directed surface, each channel opening at its one end into the trough and at its other end toward the large ends of the tapered rollers, the region at which the trough opens toward the axis of rotation being located closer to the axis of rotation than the ends of the channels that open toward the large ends of the tapered rollers, whereby a fluent lubricant that is introduced into the trough will be conveyed by centrifugal force through the channels to be discharged against the tapered rollers when the cone rotates within the cup.