CN205226082U - Sealed deep groove ball bearing - Google Patents

Abstract

The utility model relates to a bearing technology field specifically is a sealed deep groove ball bearing, including outer lane, inner circle, holder and a plurality of balls, outer lane and inner circle are equipped with first channel and second channel with the ball adaptation respectively, overlap between outer lane and the inner circle to be equipped with the sealing washer, the curvature radius of first channel is the same with the curvature radius of second channel, and is 0.520DW -0.525DW, the sealing washer in the joint have metal framework, a terminal surface of holder be equipped with a plurality of accepting groove that is used for accommodating each ball, another terminal surface is equipped with the annular, the outside extension in border of accepting groove has first encirclement piece and second encirclement piece. The utility model discloses simple structure, the practicality is strong.

Description

A kind of seal deep groove ball bearing

Technical field

The utility model relates to technical field of bearings, is specially a kind of seal deep groove ball bearing.

Background technique

The radius of curvature of traditional bearing bear inner ring grooved railway is different often from the radius of curvature of outer ring raceway, so, make the radial clearance in bearing relatively high, cause bearing inner race relative outer ring that radial deflection occurs, wearing and tearing between ball and inner ring or outer ring are larger, easy damage, and then the working life of reducing bearing.

Bearing inner race and outer ring are in relative rotation in process, and retainer also rotates thereupon, and it is heavier that traditional retainer often designs, and resistance is comparatively large, causes efficiency during bearing working lower.

Model utility content

For the deficiency that prior art exists, the purpose of this utility model is the bearing providing a kind of long service life, working efficiency high.

For achieving the above object, the utility model provides following technological scheme: a kind of seal deep groove ball bearing, comprise outer ring, inner ring, retainer and some balls, outer ring and inner ring are respectively equipped with and the first raceway groove of ball adaptation and the second raceway groove, seal ring is arranged with between outer ring and inner ring, the radius of curvature of described first raceway groove is identical with the radius of curvature of the second raceway groove, and be 0.520DW-0.525DW, metal frame is connected with in described seal ring, an end face of described retainer is provided with several accepting grooves for accommodating each ball, other end is provided with annular groove, the edge of described accepting groove is outward extended with the first encirclement sheet and second and surrounds sheet.

Further, described seal ring is made up of nitrile butadiene rubber.

Further, described metal frame is made up of materials such as steel, iron, nickel.

Further, described retainer is made up of polyhexamethylene adipic acid acid amides.

Contrast the deficiencies in the prior art, the beneficial effect that the technological scheme that the utility model provides is brought: the 1. now radius of curvature of the first raceway groove is set to identical with the radius of curvature of the second raceway groove, so the value of D1-D2 is less with regard to relative tratitional technology, therefore, radial clearance is also just relatively little, the phenomenon effectively preventing bearing from causing because radial clearance is excessive in the course of the work moving radially occurs, and then the phenomenon preventing ball and inner ring or outer ring from occurring to wear and tear and cause shorten the working life of bearing occurs, 2. an end face of retainer is provided with several accepting grooves for accommodating each ball, in order to make retainer slimmer and more graceful, flexibly, make when ball is housed in accepting groove, outside the end face being centrally located at retainer of ball or on end face, other end is provided with annular groove, the quality of retainer is alleviated with this, the resistance produced when reducing bearing working, improve working efficiency, the edge of described accepting groove is outward extended with the first encirclement sheet and second and surrounds sheet, utilize the first encirclement sheet and second to surround sheet and support ball, the phenomenon enabling the first encirclement sheet and the second encirclement sheet effectively prevent spin from dropping in accepting groove occurs, simultaneously, first surrounds sheet, second surrounds sheet, accepting groove is all fitted with ball sphere, effectively prevent ball from the phenomenon of wearing and tearing occurring when rolling.

Accompanying drawing explanation

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

Fig. 2 is the interface arrangment schematic diagram of seal ring and metal frame.

Fig. 3 is the G portion enlarged diagram of Fig. 1.

Fig. 4 is the front elevational schematic of retainer.

Fig. 5 is the schematic rear view of retainer.

Fig. 6 is that schematic diagram is looked on the right side of retainer.

Embodiment

With reference to Fig. 1-Fig. 6, the utility model is described further.

A kind of seal deep groove ball bearing, comprise outer ring 1, inner ring 2, retainer 3 and some balls 4, outer ring 1 and inner ring 2 are respectively equipped with the first raceway groove 11 and the second raceway groove 21 with ball 4 adaptation, seal ring 5 is arranged with between outer ring 1 and inner ring 2, the radius of curvature of described first raceway groove 11 is identical with the radius of curvature of the second raceway groove 21, and be 0.520DW-0.525DW, wherein DW is the nominal diameter of ball 4, according to formula: (middle D1 is the ditch footpath of the first raceway groove 11 to D1-D2=2D3+ radial clearance, D2 is the ditch footpath of the second raceway groove 21, D3 is ball 4 diameter), the radius of curvature of ratio second raceway groove 21 that the radius of curvature of the first raceway groove 11 in tratitional technology often designs is large, second raceway groove radius of curvature little, curvature is just larger, degree of crook is just larger, so D2 is just relatively little, so the value of D1-D2 is just larger, now the radius of curvature of the first raceway groove 11 is set to identical with the radius of curvature of the second raceway groove 21, so the value of D1-D2 is less with regard to relative tratitional technology, therefore, radial clearance is also just relatively little, the phenomenon effectively preventing bearing from causing because radial clearance is excessive in the course of the work moving radially occurs, and then the phenomenon preventing ball 4 and inner ring 3 or outer ring 2 from occurring to wear and tear and causing shorten the working life of bearing occurs,

Metal frame 6 is connected with in described seal ring 5, described seal ring 5 is made up of nitrile butadiene rubber, described metal frame 6 is made up of materials such as steel, iron, nickel, and the hardness of steel, iron and nickel is comparatively large, effectively can play the effect of support, seal ring 5 is prevented to be out of shape when being subject to external force, seal ring 5 is then made up of nitrile butadiene rubber, because it has good bending properties, can well be connected between outer ring 1 and inner ring 2, convenient installation, increases work efficiency;

An end face of described retainer 3 is provided with several accepting grooves 31 for accommodating each ball 4, in order to make retainer 3 slimmer and more graceful, flexibly, make when ball 4 is housed in accepting groove 31, outside the end face being centrally located at retainer 3 of ball 4 or on end face, other end is provided with annular groove 32, the quality of retainer 3 is alleviated with this, the resistance produced when reducing bearing working, improve working efficiency, the edge of described accepting groove 31 is outward extended with the first encirclement sheet 311 and second and surrounds sheet 312, the first encirclement sheet 311 and the second encirclement sheet 312 is utilized to support ball 4, the phenomenon making the first encirclement sheet 311 and the second encirclement sheet 312 can effectively prevent spin from dropping in accepting groove 31 occurs, simultaneously, first surrounds sheet 311, second surrounds sheet 312, accepting groove 31 is all fitted with ball 4 sphere, surround sheet 311 at ball 4 and first respectively simultaneously, butter is scribbled between second encirclement sheet 312 and accepting groove 31, make to produce oil film between them, effectively prevent ball 4 from the phenomenon of wearing and tearing occurring when rolling, reduce resistance, improve working efficiency and performance.

Described retainer 3 is made up of polyhexamethylene adipic acid acid amides, because it has, excellent self-lubricating property, crocking resistance, mechanical strength are high, good toughness, therefore it can be used as the material of retainer 3, coordinate the structure of retainer 3, make it can also ensure good mechanical strength and toughness on slim and graceful, dexterous basis, and not easily wear and tear with ball 4.

The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, those skilled in the art carries out common change and replaces should being included in protection domain of the present utility model within the scope of technical solutions of the utility model.

Claims (4)

1. a seal deep groove ball bearing, comprise outer ring, inner ring, retainer and some balls, outer ring and inner ring are respectively equipped with and the first raceway groove of ball adaptation and the second raceway groove, seal ring is arranged with between outer ring and inner ring, it is characterized in that: the radius of curvature of described first raceway groove is identical with the radius of curvature of the second raceway groove, and be 0.520DW-0.525DW

Be connected with metal frame in described seal ring, an end face of described retainer is provided with several accepting grooves for accommodating each ball, and other end is provided with annular groove, and the edge of described accepting groove is outward extended with the first encirclement sheet and second and surrounds sheet.

2. a kind of seal deep groove ball bearing according to claim 1, is characterized in that: described seal ring is made up of nitrile butadiene rubber.

3. a kind of seal deep groove ball bearing according to claim 1, is characterized in that: described metal frame is made up of steel, iron, nickel material.

4. a kind of seal deep groove ball bearing according to claim 1, is characterized in that: described retainer is made up of polyhexamethylene adipic acid acid amides.