CN201354802Y

CN201354802Y - High abrasion-resistant oil-free lubrication bearing

Info

Publication number: CN201354802Y
Application number: CNU2009201148551U
Authority: CN
Inventors: 童永进; 华俊娟
Original assignee: SHUANGFEI NON-OIL BEARING Co Ltd ZHEJIANG PROV
Current assignee: Zhejiang SF Oilless Bearing Co., Ltd.
Priority date: 2009-03-04
Filing date: 2009-03-04
Publication date: 2009-12-02
Anticipated expiration: 2019-03-04

Abstract

The utility model discloses a high abrasion-resistant and oil-free lubrication bearing, and aims to provide a high abrasion-resistant oil-free lubrication bearing which has good abrasion resistance and long service life, and is suitable for lubricant free and high-speed motion occasions. The bearing comprises a steel bushing, and is characterized in that a copper alloy powder layer is arranged on the abrasion resistant surface of the steel bushing through sintering; a mixture layer adopting PTFE (Polytetrafluoroethylene) as a main material and other components as filling materials, and having a thickness of 0.10 to 0.40mm is adhered to the surface of the copper alloy powder layer, so as to form a three-layer composite shaft sleeve; and a joint close is formed on the surface of the shaft sleeve. As a steel baseplate serves as a back plate, and the copper alloy powder layer is arranged on the back plate through sintering, the utility model has high binding force with the PTFE layer on the surface; and the PTFE mixture layer is thicker than a normal mixture layer, so that the abrasion resistant surface of the bearing obtains certain elasticity, the specific pressure with a cooperated shaft is reduced, and the durability in lubricant free and high-speed motion occasions is dramatically improved.

Description

The high abrasion Nonlubricated bearing

Technical field

The utility model relates to sliding bearing, relates in particular to a kind of high abrasion Nonlubricated bearing.

Background technique

Many composite bearings are arranged in the market, at the common sintering of their wearing face one deck teflon is arranged, thickness is generally at 0.01～0.03 millimeter, and this composite bearing is just not wear-resisting at the occasion polytetrafluoroethylene floor of unlubricated oil and high-speed motion, wearing no resistance of they, working life is short.

Summary of the invention

The purpose of this utility model provides that a kind of wear resistance is good, long service life, can adapt to the high abrasion Nonlubricated bearing of unlubricated oil and high-speed motion occasion.

In order to achieve the above object, the technical solution of the utility model is: comprise steel bushing, it is characterized in that the Cuprum alloy bisque being arranged at the wearing face sintering of steel bushing, thickness is arranged is 0.10～0.40mm based on teflon and fill the mixture layer of other fillers in the surface attachment of Cuprum alloy bisque, form three layers of compound axle sleeve, one joint close is arranged on the surface of axle sleeve.

The high abrasion Nonlubricated bearing of said structure, it has steel substrate as backboard, after sintering on the backboard has the Cuprum alloy bisque, can make with surperficial polytetrafluoroethylene floor very strong combination force is arranged, again because the mixture layer of the teflon thicker than common thickness is arranged, make the wearing face of bearing that certain elasticity be arranged, reduce with the specific pressure of its fitted shaft, significantly improved durability in unlubricated oil and the use of high-speed motion occasion.

Description of drawings

Fig. 1 is the plan view of high abrasion Nonlubricated bearing;

Fig. 2 is the plan view of Fig. 1;

Fig. 3 is the plan view that has the high abrasion Nonlubricated bearing of flange flange;

Fig. 4 is the plan view of Fig. 3.

Among the figure: 1, steel bushing; 2, Cuprum alloy bisque; 3, mixture layer; 4, joint close; 5, flange; 6, opening.

Embodiment

The utility model will be further described below in conjunction with accompanying drawing.

The utility model includes steel bushing 1, wearing face sintering at steel bushing 1 has Cuprum alloy bisque 2, thickness is arranged is 0.10～0.40mm based on teflon and fill the mixture layer 3 of other fillers in the surface attachment of Cuprum alloy bisque 2, form three layers of compound axle sleeve, one joint close 4 is arranged as shown in Figure 1 and Figure 2 on the surface of axle sleeve.Also can be made into end face at described axle sleeve and be connected with flange shaft sleeve with the own same material band of axle sleeve flange 5, the opening 6 of V-arrangement is arranged on the flange 5, opening 6 bottoms link to each other as shown in Figure 3, Figure 4 with joint close 4.Described copper alloy powder is the tin bronze powder.The endoporus of axle sleeve is a wearing face, also can be located at the outer round surface of axle sleeve according to the usage requirement wearing face, and then mixture layer 3 is just on the outer round surface of axle sleeve.

Claims

1, high abrasion Nonlubricated bearing, comprise steel bushing, it is characterized in that the Cuprum alloy bisque being arranged at the wearing face sintering of steel bushing, thickness is arranged is 0.10～0.40mm based on teflon and fill the mixture layer of other fillers in the surface attachment of Cuprum alloy bisque, form three layers of compound axle sleeve, one joint close is arranged on the surface of axle sleeve.

2, high abrasion Nonlubricated bearing according to claim 1 is characterized in that described copper alloy powder is the tin bronze powder.

3, high abrasion Nonlubricated bearing according to claim 1 is characterized in that end face at described axle sleeve is connected with the flange with the same material flange of axle sleeve own.

4, high abrasion Nonlubricated bearing according to claim 3 is characterized in that having on the described flange opening of V-arrangement, and open bottom links to each other with joint close.