CN204739086U - Double row plastic bearing structure - Google Patents

Abstract

The utility model discloses a double-row plastic bearing structure, which comprises an outer ring, an inner ring, a cage and steel balls. It adopts a double-row steel ball design to reduce the radial and axial clearance of the inner and outer rings. The double-row steel balls are designed in parallel, which is the same size as the single-row standard bearing and has a compact structure; the inner and outer rings are made of POM material to rotate more smoothly and stably; The steel ball is made of bearing steel, which is matched with the outer ring and inner ring of POM material, with small friction coefficient and long service life.

Description

Double row plastic bearing structure

technical field

The utility model belongs to the field of bearings, in particular to a double-row plastic bearing structure.

Background technique

Bearings are an important part of contemporary mechanical equipment. Its main function is to support the mechanical rotating body, reduce the friction coefficient during its movement, and ensure its rotation accuracy.

Generally, the radial and axial clearances of the inner and outer rings of the bearing are large, so in actual use, there will be situations such as unstable equipment performance, equipment jitter, etc., and the installation of the bearing is inconvenient in some occasions.

Contents of the invention

The purpose of this utility model is to overcome the deficiencies of the prior art and provide a double-row plastic bearing structure, which adopts a double-row steel ball design to reduce the radial and axial clearances of the inner ring and outer ring. Single-row standard bearings have the same size and compact structure; the inner and outer rings are made of POM material to rotate more smoothly and stably; the steel balls are made of bearing steel, which cooperates with the outer and inner rings of POM material, with small friction coefficient and long service life.

The utility model adopts the following technical solutions to realize:

A double-row plastic bearing structure, including an outer ring, an inner ring, a cage and steel balls,

One end of the inner ring is provided with an end cover, and the center of the end cover is provided with a shaft hole; the end cover is evenly provided with inner ring quick-installation holes, through which the inner ring (rotor) can be quickly installed and fixed ; One end of the outer ring is provided with a flange, and the flange is evenly provided with quick-installation holes for the outer ring, through which the outer ring (stator) can be quickly installed and fixed; the cage includes a first cage and the second cage, the first cage and the second cage are arranged between the inner ring and the outer ring parallel to each other, and the first cage and the second cage are symmetrical with the vertical bisector of the inner ring as the bisector; The steel balls include a first row of steel balls and a second row of steel balls, and the first row of steel balls and the second row of steel balls are installed in the first cage and the second cage respectively.

In the above technical solution, sealing rings (not shown in the figure) are also provided at both ends of the outer ring and the inner ring.

In the above technical solution, the inner ring and the outer ring are arranged coaxially, and the heights of the inner ring and the outer ring are equal.

In the above technical solution, both the outer ring and the inner ring are made of POM (Polyoxymethylene polyoxymethylene).

In the above technical solution, the material of the steel ball is bearing steel, which cooperates with the outer ring and the inner ring of POM material, and has a small friction coefficient and a long service life.

The utility model adopts the double-row steel ball design to reduce the radial and axial clearances of the inner ring and the outer ring. The double-row steel balls are designed in parallel, which is the same size as the single-row standard bearing and has a compact structure; The bearing is installed and fixed; the inner and outer rings are made of POM material to rotate more smoothly and stably; the steel balls are made of bearing steel, which cooperates with the outer ring and inner ring of POM material, with small friction coefficient and long service life.

Description of drawings

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

FIG. 2 is a sectional view of FIG. 1 .

Fig. 3 is a schematic structural view of the utility model.

Among them, 1 is the outer ring, 2 is the inner ring, 1-1 is the quick mounting hole of the outer ring, 1-2 is the flange, 2-1 is the quick mounting hole of the inner ring, 2-2 is the shaft hole, 3-1 is the The first cage, 3-2 is the second cage, 4-1 is the first row of steel balls, and 4-2 is the second row of steel balls.

Detailed ways

The technical scheme of the utility model is further described below in conjunction with specific embodiments.

As shown in accompanying drawings 1-3, a double-row plastic bearing structure involved in the utility model includes an outer ring 1, an inner ring 2, a cage, steel balls,

One end of the inner ring 2 is provided with an end cover, and the center of the end cover is provided with a shaft hole 2-2; the end cover is evenly provided with an inner ring quick-installation hole 2-1, through which the inner ring quick-installation hole can be quickly installed. The inner ring (rotor) is installed and fixed; one end of the outer ring 1 is provided with a flange 1-2, and the flange 1-2 is evenly provided with outer ring quick-installation holes 1-1, through which the outer ring quick-installation holes can be quickly The outer ring (stator) is installed and fixed; the cage includes a first cage 3-1 and a second cage 3-2, and the first cage 3-1 and the second cage 3-2 are arranged in parallel with each other Between the ring 2 and the outer ring 1, and the first cage 3-1 and the second cage 3-2 are symmetrical with the vertical bisector of the inner ring 2 as the bisector; the steel balls include the first row of steel balls 4-1 and The second row of steel balls 4-2, the first row of steel balls 4-1 and the second row of steel balls 4-2 are respectively installed in the first cage 3-1 and the second cage 3-2.

Both ends of the outer ring 1 and the inner ring 2 are also provided with sealing rings (not shown in the figure).

The inner ring and the outer ring are coaxially arranged, and the height a of the inner ring and the outer ring is equal.

Both the outer ring 1 and the inner ring 2 are made of POM (Polyoxymethylene) polyoxymethylene material.

The steel ball is made of bearing steel, which cooperates with the outer ring and inner ring of POM material, has a small friction coefficient and a long service life.

The utility model adopts the double-row steel ball design to reduce the radial and axial clearances of the inner ring and the outer ring. The double-row steel balls are designed in parallel, which is the same size as the single-row standard bearing and has a compact structure; The bearing is installed and fixed; the inner and outer rings are made of POM material to rotate more smoothly and stably; the steel balls are made of bearing steel, which cooperates with the outer ring and inner ring of POM material, with small friction coefficient and long service life.

The utility model has been described as an example above. It should be noted that, without departing from the core of the utility model, any simple deformation, modification or other equivalent replacements that can be made by those skilled in the art without costing creative labor all fall into the Into the scope of protection of the utility model.

Claims (5)

1. A double-row plastic bearing structure, comprising an outer ring, an inner ring, a cage and steel balls, characterized in that: One end of the inner ring is provided with an end cover, and the center of the end cover is provided with a shaft hole; the end cover is evenly provided with quick-installation holes for the inner ring; one end of the outer ring is provided with a flange, and the flange is evenly provided with Outer ring quick mounting hole; the cage includes a first cage and a second cage, the first cage and the second cage are arranged between the inner ring and the outer ring in parallel, and the first cage and the second cage The two cages are symmetrical with the vertical bisector of the inner ring as the bisector; the steel balls include the first row of steel balls and the second row of steel balls, and the first row of steel balls and the second row of steel balls are installed on the first cage and the second cage respectively middle. 2. The double-row plastic bearing structure according to claim 1, characterized in that: the two ends of the outer ring and the inner ring are also provided with sealing rings. 3. The double-row plastic bearing structure according to claim 1, characterized in that: the inner ring and the outer ring are arranged coaxially, and the heights of the inner ring and the outer ring are equal. 4. The double-row plastic bearing structure according to claim 1, characterized in that: the outer ring and the inner ring are made of POM. 5. The double-row plastic bearing structure according to claim 1, wherein the material of the steel balls is bearing steel.