RU158478U1 - DOUBLE-ROW RADIALLY STOP BALL BEARING - Google Patents

Abstract

A double-row angular contact ball bearing containing two outer rings having raceways, a solid inner ring with two raceways, two rows of rolling bodies in the form of balls placed in the raceways, cages for separating rolling bodies, characterized in that the outer rings are made open towards the narrow end of the rings, between the wide ends of the outer rings are installed spacer half-rings with a width that provides a predetermined amount of preload and structural rigidity, on each side two washers are installed in the bearing, one of which is pressed to the end of the outer ring, the other to the end of the inner ring, and a labyrinth gap is formed between these washers to prevent contaminants from entering the bearing and retaining lubricant in the inner space, ensuring the operation of the bearing for a given resource without additional service in progress.

Description

The utility model relates to mechanical engineering, in particular, to rolling bearings and can be used in instrumentation, aircraft manufacturing, the aerospace industry and other industries.

The closest analogue (prototype) is a double-row ball bearing containing two outer rings having raceways, an integral inner ring with two raceways, two rows of rolling bodies in the form of balls having a profile mating with the surfaces of the raceways of the inner ring of the bearing, cages for separation of rolling elements (RF patent No. 2488721 C1, publ. 07/27/2013, bull. No. 21).

The disadvantages of the closest analogue (prototype) are the vulnerability of the working surfaces from contaminants, as well as the need for lubrication of the bearing, which does not ensure the operation of the bearing for a given resource without additional maintenance during operation under rated loads.

The utility model is based on the task of creating a double-row angular contact rolling ball bearing with a preload force between the rows of balls and the incorporated working lubricant, which ensures the operation of the bearing for a given resource without additional maintenance during operation.

The technical result, the achievement of which is proposed by the proposed utility model, is to ensure the operation of the bearing for a given resource without additional maintenance in the process under rated load conditions.

The technical result is achieved by the fact that in the known ball bearing containing two outer rings having raceways, a solid inner ring with two raceways, two rows of rolling bodies in the form of balls having a profile mating with the surfaces of the raceways of the inner ring of the bearing, cages separation of the rolling elements, the outer rings are made open towards the narrow end of the rings, between the wide ends of the outer rings there are spacer rings with a width that provides a given weight The reason for the preload and structural rigidity, two washers are installed on each side of the bearing, one of which is pressed to the end of the outer ring, the other to the end of the inner ring, and a labyrinth gap is formed between these washers to prevent contaminants from entering the bearing and retaining grease in the inner space, ensuring the operation of the bearing for a given resource without additional maintenance during operation.

The inventive rolling bearing has a novelty, differing from the prototype of the above features, and ensures the achievement of the technical result perceived by the applicant.

The essence of the technical solution is illustrated by the drawing, which shows a sectional view of the bearing.

A double row angular contact ball bearing contains outer rings 1, an inner ring 2 with two raceways, a removable spacer ring 4 (consisting of two half rings) installed between the wide ends of the outer rings 1 and, placed between the rings 1 and 2, the rolling elements (balls ) 3. A massive textolite cage 5 is mounted on balls 3 in both rows for uniform distribution over the entire circumference of the outer rings 1 and the inner ring 2 of the ball bearing. Between the rows of balls 3 a preliminary axial interference was created by installing a removable spacer ring 4.

Preliminary axial interference is achieved by fine-tuning the width of the spacer ring to a size that provides the required value of axial interference when assembling the bearing.

Ensuring the nominal contact angle of the balls with the raceways of 26 degrees is achieved by the required radial clearance and the geometry of the raceways of the outer and inner rings.

Two protective washers are installed on each side of the kit, one of which is pressed against the end of the outer ring, and the other is against the end of the inner ring, and a labyrinth gap is formed between these washers to prevent contaminants from entering the bearing and to keep the lubricant in the inner space, which ensures the bearing operates in the flow of a given resource without additional maintenance in the process.

A double-row angular contact ball bearing operates as follows.

The proposed bearing installed in the node, device, machine provides the perception of loads and transmission of rotation. When the rings of the inner 2 and / or the rings of the outer 1 rotate, the workload is transferred between the rings 1 and 2 through the balls 3, while the balls 3 are set in motion. Each ball 3 rotates around its axis of rotation and all the balls 3 move in a circle along with the separators 5.

Thus, the use of the proposed bearing in comparison with the use of a bearing selected as a prototype allows to ensure the operation of the bearing for a given resource without additional maintenance during operation.

Claims (1)

A double-row angular contact ball bearing containing two outer rings having raceways, a solid inner ring with two raceways, two rows of rolling bodies in the form of balls placed in the raceways, cages for separating rolling bodies, characterized in that the outer rings are made open towards the narrow end of the rings, between the wide ends of the outer rings there are spacing half rings of a width that provides a predetermined amount of preload and structural rigidity, on each side two washers are installed in the bearing, one of which is pressed to the end of the outer ring, the other to the end of the inner ring, and a labyrinth gap is formed between these washers to prevent contaminants from entering the bearing and retaining lubricant in the inner space, ensuring the operation of the bearing for a given life without additional service in progress.

Images