RU2298705C1 - Frictionless roller bearing - Google Patents

Abstract

FIELD: mechanical engineering, in particular, frictionless bearings.

SUBSTANCE: frictionless roller bearing contains circular groove and apertures, axes of which are positioned between rows of rollers. Circular groove is positioned at a distance from end of external ring which does not exceed length of roller. Groove is connected to apertures via recesses. Recesses are made in either longitudinal or spiraling form.

EFFECT: increased reliability of bearing operation.

3 cl, 6 dwg

Description

The invention relates to the field of engineering, in particular to rolling bearings.

Known double-row self-aligning roller bearing [1].

The bearing contains an outer ring with a raceway, an inner ring with raceways, two rows of rollers. An annular groove with holes is located in the middle of the outer ring. The axis of the holes are located between the rows of rollers.

An annular groove with holes weakens the thin section of the outer ring, which leads to a decrease in its strength and, as a consequence, to the possibility of destruction under the influence of loads, i.e. to reduce the reliability of the bearing.

Known spherical roller three-row bearing [2].

The bearing contains an outer ring with a raceway, an inner ring with raceways, three rows of rollers. On the outer ring are two annular grooves with holes. The axis of the holes are located between the rows of rollers.

The presence of annular grooves with holes also weakens the thin sections of the outer ring, which leads to a decrease in its strength and a decrease in the reliability of the bearing.

The technical problem to which the invention is directed is to increase the reliability of the bearing.

The problem is solved in that in a roller bearing comprising an outer ring with a raceway, an inner ring with several raceways, rollers, the outer ring comprising an annular groove and holes whose axes are located between the rows of rollers, according to the invention, the annular groove is located from the end the outer ring at a distance not exceeding the length of the roller, and connected to the holes with grooves. The grooves can be made longitudinal or spiral.

The invention is illustrated by drawings.

Figure 1 shows an axial section of a double-row roller bearing;

figure 2 - connection of holes with an annular groove with longitudinal grooves in a double-row roller bearing;

figure 3 - connection of holes with an annular groove spiral grooves in a double-row roller bearing;

figure 4 is an axial section of a three-row roller bearing;

figure 5 - connection of holes with an annular groove with longitudinal grooves in a three-row roller bearing;

figure 6 - connection of holes with an annular groove spiral grooves in a three-row roller bearing.

The roller bearing contains an outer ring 1 with a raceway 2, an inner ring 3 with raceways 4, rollers 5 of length l. An annular groove 6 and holes 7 are made on the outer ring 1 and are interconnected by grooves 8. The O-O axes of the holes 7 are located between the rows of rollers 5. The annular groove 6 is located from the end face 9 of the outer ring 1 at a distance L≤l.

When lubricating the bearing, a lubricant is introduced into the hole in the housing of the bearing assembly, which enters the annular groove 6 and is distributed over it. Then, along the grooves 8 and through the holes 7, the lubricant penetrates into the space between the rows of rollers 5 and spreads along the inner cavity of the bearing.

The thickness a of the outer ring 1 in section AA through the annular groove 6 located at a distance L≤l significantly exceeds the thickness in the outer ring in the section BB in the middle of the outer ring 1. This will remove the attenuation of the thin section BB of the outer ring 1 and therefore increase the reliability of the bearing

Information sources

1. US patent No. 5009524, 05/10/1990

2. The catalog of JSC "Minsk Bearing Plant" "New Development", 2003, p. 10.

Claims (3)

1. A roller bearing comprising an outer ring with a raceway, an inner ring with several raceways, rollers, the outer ring comprising an annular groove and holes whose axes are located between the rows of rollers, characterized in that the annular groove is located from the end of the outer ring to a distance not exceeding the length of the roller, and connected to the holes with grooves. 2. The roller bearing according to claim 1, characterized in that the grooves are made longitudinal. 3. The roller bearing according to claim 1, characterized in that the grooves are made spiral.

Images