CN206246535U - New Single Row Cylindrical Roller Bearings - Google Patents

Abstract

The utility model provides a novel single-row cylindrical roller bearing, including bearing inner race, cylindrical roller and the holder that sets up between bearing inner race and bearing inner race, the inner ring surface at bearing inner race axial both ends is the parallel and level with the inner ring surface of bearing inner race, and the outer ring surface at bearing inner race axial both ends all is provided with the inner circle flange, and the inner circle flange is annular flange, and the inner circle flange is integrated into one piece structure with the bearing inner race, and the inboard of inner circle flange sets up to the inclined plane; the end faces of the two axial ends of the bearing inner ring are located on the inner side of the end face of the bearing outer ring, a plurality of pockets for containing the cylindrical rollers are uniformly arranged on the retainer along the circumferential direction, and the retainer is an integral retainer guided by the outer ring. The utility model discloses a single-row cylindrical roller bearing's rotational speed is compared with ordinary single-row cylindrical roller bearing rotational speed and has been improved 3 times, and its life has improved more than 2 times, has satisfied the operation requirement of machinery in the operation process completely.

Description

New Single Row Cylindrical Roller Bearings

technical field

The utility model relates to a bearing, in particular to a novel single-row cylindrical roller bearing.

Background technique

With the continuous development of industry, the machinery industry also has greater development prospects in various fields, which has led to a more diverse demand for bearing types. Among them, single row cylindrical roller bearings are used in high-speed and heavy-load mechanical equipment. widely. Generally, single row cylindrical roller bearings include bearing outer ring, bearing inner ring, cage and rollers, which are very convenient to install and disassemble, and can withstand large radial loads. However, the single-row cylindrical roller bearings currently used in China generally have a low speed and short life, which is difficult to meet the requirements of the machine during operation, and even damage such as early fatigue failure occurs.

Utility model content

The purpose of this utility model is to provide a new type of single row cylindrical roller bearing to solve the problems of low rotating speed and short life in the existing single row cylindrical roller bearing.

The utility model is realized in the following way: a novel single-row cylindrical roller bearing, comprising a bearing outer ring, a bearing inner ring, cylindrical rollers and a cage arranged between the bearing outer ring and the bearing inner ring, the The inner ring surfaces at both axial ends of the bearing outer ring are flush with the inner ring surfaces of the bearing outer ring, and the outer ring surfaces at both axial ends of the bearing inner ring are provided with inner ring ribs, and the inner ring ribs It is an annular rib, the inner ring rib and the bearing inner ring are integrally formed, and the inner side of the inner ring rib is set as a slope;

The end faces of the axial ends of the inner ring of the bearing are located inside the corresponding end faces of the outer ring of the bearing, and several pockets for accommodating the cylindrical rollers are evenly arranged on the cage along the circumferential direction, so that The above-mentioned cage adopts an integral cage guided by the outer ring.

A groove is opened at a position corresponding to the position between the two pockets on the outer ring surface of the cage.

The cage is a copper cage.

The outer surface of the cage is provided with a silver-plated protective layer.

In the utility model, the outer ring surfaces of the axial ends of the inner ring of the bearing are provided with inner ring ribs, the inner ring ribs are annular ribs, and the inner ring ribs and the bearing inner ring are integrally formed. The inner side of the inner ring is set as a slope, so that a wedge-shaped oil film can be formed between the end face of the cylindrical roller and the corresponding inner ring rib, which reduces the friction between the roller and the rib to a certain extent, and effectively improves the service life of the bearing. The cage adopts an integral cage guided by the outer ring, and the lubricating oil enters the guide surface and the raceway where the cylindrical rollers are located, which is suitable for high-speed operation of the bearing.

The rotational speed of the single-row cylindrical roller bearing of the utility model is 3 times higher than that of the ordinary single-row cylindrical roller bearing, and its service life is more than 2 times higher, which fully meets the requirements of the machine during operation. In addition, the precision grade of the bearing of the utility model can reach the highest precision grade P2, so that it has the advantages of high speed, low noise, small vibration, less heat generation and long life.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Fig. 2 is a schematic structural view of the cage of the present invention.

Fig. 3 is an A-A view of the cage of the present invention.

In the figure: 1. Bearing outer ring; 2. Bearing inner ring; 3. Cylindrical roller; 4. Cage; 5. Inner ring rib; 6. Groove.

detailed description

As shown in Fig. 1, Fig. 2 and Fig. 3, a new type of single row cylindrical roller bearing includes bearing outer ring 1, bearing inner ring 2, cylindrical roller 3 and is arranged between bearing outer ring 1 and bearing inner ring 2 The cage 4 of the bearing outer ring 1 is flush with the inner ring surface of the bearing outer ring 1 at both axial ends, and the outer ring surfaces of the bearing inner ring 2 at both ends of the axial The rib 5 and the bearing inner ring 2 are integrally formed. The inner ring rib 5 is an annular rib, and the inner side of the inner ring rib 5 is set as a slope. In this embodiment, the bottom angle of the inner slope of the inner ring rib 5 and the annular raceway formed by the inner ring of the bearing is an obtuse angle. Both the inner ring surface and the outer ring surface of the inner ring 2 of the bearing are provided with chamfers to facilitate the installation of the bearing. The end surfaces of the two axial ends of the bearing inner ring 2 are located inside the corresponding end surfaces of the bearing outer ring 1 .

The cage 4 adopts an integral cage 4 guided by the outer ring, that is, the distance between the outer ring surface of the cage 4 and the inner ring surface of the bearing outer ring 1 is smaller than the distance between the inner ring surface of the cage 4 and the rib 5 of the inner ring. The distance between the outer rings. The cage 4 is a copper cage 4, and the outer surface of the cage 4 is provided with a silver-plated protective layer. The strength of the copper cage is relatively high, and the silver plating on the outer surface of the copper cage enhances the wear resistance and durability of the cage 4. Corrosion resistance, improve its self-lubricating ability, and can effectively improve the bearing speed and service life. Several pockets for accommodating the cylindrical rollers 3 are uniformly arranged on the cage 4 along the circumferential direction, and the pockets are rectangular pockets in this embodiment. There is a one-to-one relationship between the pockets and the cylindrical rollers 3 . A groove 6 is provided on the outer ring surface of the cage 4 corresponding to the position between the two pockets. This groove can not only play a role in lubrication, but also play a role in positioning the locking point of the cage. Both ends of the cylindrical roller 3 are provided with arc-shaped convexities, which can effectively avoid stress concentration at both ends of the rolling surface. The arc-shaped convexity of the cylindrical roller 3 cooperates with the inner inclined surface of the rib 5 of the inner ring to form a wedge-shaped oil film, which can reduce the friction between the roller and the rib and effectively improve the life of the bearing.

Claims (4)

1. A novel single row cylindrical roller bearing, comprising a bearing outer ring, a bearing inner ring, cylindrical rollers and a cage arranged between the bearing outer ring and the bearing inner ring, characterized in that the bearing The inner ring surfaces at both axial ends of the outer ring are flush with the inner ring surfaces of the bearing outer ring, and the outer ring surfaces at both axial ends of the bearing inner ring are provided with inner ring ribs, and the inner ring ribs are annular Rib, the rib of the inner ring and the inner ring of the bearing are integrally formed, and the inner side of the rib of the inner ring is set as a slope; The end faces of the axial ends of the inner ring of the bearing are located inside the corresponding end faces of the outer ring of the bearing, and several pockets for accommodating the cylindrical rollers are evenly arranged on the cage along the circumferential direction, so that The above-mentioned cage adopts an integral cage guided by the outer ring. 2 . The novel single row cylindrical roller bearing according to claim 1 , wherein a groove is formed on the outer ring surface of the cage at a position corresponding to the position between the two pockets. 3 . 3. The novel single row cylindrical roller bearing according to claim 1, wherein the cage is a copper cage. 4. The novel single row cylindrical roller bearing according to claim 1 or 3, characterized in that a silver-plated protective layer is provided on the outer surface of the cage.