CN213332075U

CN213332075U - Long-life high-speed cooling fan bearing for 5G base station

Info

Publication number: CN213332075U
Application number: CN202021508193.9U
Authority: CN
Inventors: 徐境福; 周威; 李晓鹏
Original assignee: Nantong Sk Seiko Co ltd
Current assignee: Nantong Sk Seiko Co ltd
Priority date: 2020-07-27
Filing date: 2020-07-27
Publication date: 2021-06-01
Anticipated expiration: 2030-07-27

Abstract

A long-life high-speed cooling fan bearing for a 5G base station comprises a bearing outer ring, a bearing inner ring and a steel ball, wherein a first channel and a second channel are correspondingly formed in the inner side wall of the bearing outer ring and the outer side wall of the bearing inner ring; the steel balls are arranged in the first channel and the second channel through the retainer bracket; the first channel and the second channel are arc-shaped channels, the curvature radius of the first channel is R1, the curvature radius of the second channel is R2, the numerical values of R1 and R2 are increased by 2% -4% of the original curvature radius coefficient, the depth dimension of the first channel is a, the depth dimension of the second channel is b, and the numerical values of a and b are increased by 23% -26% of the original depth; and a contact angle c is formed between the bearing outer ring and the bearing inner ring. Compared with the prior art, the utility model discloses a curvature radius coefficient and the depth of channel of bearing inner race and bearing inner race change, promote the impact resistance of bearing life and bearing.

Description

Long-life high-speed cooling fan bearing for 5G base station

Technical Field

The utility model relates to a bearing technical field specifically indicates a 5G basic station is with high-speed radiator fan bearing of long-life.

Background

The rotational speed of a deep groove ball bearing for a conventional fan is 5000-; and the depth of the channel between the inner ring and the outer ring of the conventional fan bearing is shallow, and the load which can be borne in the installation and use process can only be kept at 120-150N.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is to above-mentioned prior art not enough, and provide a 5G basic station is with high-speed radiator fan bearing of long-life.

In order to solve the technical problem, the utility model discloses a technical scheme is:

a long-life high-speed cooling fan bearing for a 5G base station comprises a bearing outer ring, a bearing inner ring and a steel ball, wherein a first channel and a second channel are correspondingly formed in the inner side wall of the bearing outer ring and the outer side wall of the bearing inner ring; the steel balls are arranged in the first channel and the second channel through the retainer bracket; the first channel and the second channel are arc-shaped channels, the curvature radius of the first channel is R1, the curvature radius of the second channel is R2, the numerical values of R1 and R2 are increased by 2% -4% of the original curvature radius coefficient, the depth dimension of the first channel is a, the depth dimension of the second channel is b, and the numerical values of a and b are increased by 23% -26% of the original depth; and a contact angle c is formed between the bearing outer ring and the bearing inner ring.

Furthermore, the increment of the curvature radius R1 of the first channel and the curvature radius R2 of the second channel on the original curvature radius coefficient is 3 percent, namely the increment of the curvature radius R1 is 0.05 mm-0.055 mm, and the increment of the curvature radius R2 of the second channel is 0.02 mm-0.025 mm.

Further, the depth dimension a and the depth dimension b are increased by 25% of the original depth, that is, the depth dimension a and the depth dimension b are both 0.25 mm.

Further, the contact angle c is 12 degrees.

Compared with the prior art, the utility model discloses a 5G basic station is with high-speed radiator fan bearing of long-life has following beneficial effect:

1. the curvature radius coefficients of the bearing inner ring and the bearing outer ring are increased by 3% on the original basis, so that the problem of heat dissipation inside the bearing in a high-speed state is solved, and the service life of the bearing is prolonged to 8-10 ten thousand hours;

2. the depth of the groove between the bearing inner ring and the bearing outer ring is increased by 25%, the bearing can bear 210-230N load in the installation and use process, and the impact resistance of the bearing is improved.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

the bearing comprises a bearing outer ring 1, a bearing inner ring 2, a bearing outer ring 3 and a steel ball.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below.

As shown in fig. 1, a long-life high-speed cooling fan bearing for a 5G base station comprises a bearing outer ring 1, a bearing inner ring 2 and a steel ball 3, wherein a first channel and a second channel are correspondingly formed on the inner side wall of the bearing outer ring 1 and the outer side wall of the bearing inner ring 2; the steel ball 3 is arranged in the first channel and the second channel through the retainer bracket; the first channel and the second channel are arc-shaped channels, the curvature radius of the first channel is R1, the curvature radius of the second channel is R2, the numerical values of R1 and R2 are increased by 2% -4% of the original curvature radius coefficient, the depth dimension of the first channel is a, the depth dimension of the second channel is b, and the numerical values of a and b are increased by 23% -26% of the original depth; and a contact angle c is formed between the bearing outer ring 1 and the bearing inner ring 2.

In the embodiment, the outer diameter of the bearing outer ring 1 is 8mm, the inner hole diameter of the bearing inner ring 2 is 3mm, the heights of the bearing outer ring 1 and the bearing inner ring 2 are 4mm, and on the basis that the bearing outer ring 1 and the bearing inner ring 2 are not changed, the increment of the curvature radius R1 of the first channel and the curvature radius R2 of the second channel on the original curvature radius coefficient is 3 percent, namely the increment of the curvature radius R1 is 0.05 mm-0.055 mm, and the increment of the curvature radius R2 of the second channel is 0.02 mm-0.025 mm, so that the problem of heat dissipation inside the bearing in a high-speed state is solved; the depth a and the depth b are increased by 25% of the original depth, namely the depth a and the depth b are both 0.25mm, so that the impact resistance of the bearing is further improved; the degree of the contact angle c is reduced from 15 degrees to 12 degrees.

The present invention is not limited to the above-described embodiments, and those skilled in the art can make modifications or changes without departing from the spirit of the present invention.

Claims

1. A long-life high-speed cooling fan bearing for a 5G base station comprises a bearing outer ring, a bearing inner ring and a steel ball, wherein a first channel and a second channel are correspondingly formed in the inner side wall of the bearing outer ring and the outer side wall of the bearing inner ring; the steel ball passes through the retainer support mounting in channel one and channel two, its characterized in that: the first channel and the second channel are arc-shaped channels, the curvature radius of the first channel is R1, the curvature radius of the second channel is R2, the numerical values of R1 and R2 are increased by 2% -4% of the original curvature radius coefficient, the depth dimension of the first channel is a, the depth dimension of the second channel is b, and the numerical values of a and b are increased by 23% -26% of the original depth; and a contact angle c is formed between the bearing outer ring and the bearing inner ring.

2. The long-life high-speed heat-dissipating fan bearing for a 5G base station as claimed in claim 1, wherein: the increment of the curvature radius R1 of the first channel and the curvature radius R2 of the second channel on the original curvature radius coefficient is 3 percent, namely the increment of the curvature radius R1 is 0.05 mm-0.055 mm, and the increment of the curvature radius R2 of the second channel is 0.02 mm-0.025 mm.

3. The long-life high-speed heat-dissipating fan bearing for a 5G base station as claimed in claim 1, wherein: the depth dimension a and the depth dimension b are increased by 25% of the original depth, namely, the depth dimension a and the depth dimension b are both 0.25 mm.

4. The long-life high-speed heat-dissipating fan bearing for a 5G base station as claimed in claim 1, wherein: the contact angle c is 12 degrees.