Proven, long-lasting composite washer， self-lubricating metal-polymer bushings and thrust bearings, heavy-duty thrust washer bearings, SF-1 Washer

SF-1 washers, also known as self-lubricating dry washers, are components designed for applications where maintenance-free operation and reduced friction are essential. These washers typically consist of a steel base with a layer of porous bronze particles in the middle and a surface layer of PTFE (polytetrafluoroethylene) for self-lubrication. The PTFE layer provides low friction, wear resistance, and noise reduction properties.

The structure of SF-1 washers includes:

1. Self-lubricating layer: A thin layer (0.01-0.03mm) of PTFE and fibers that form a transfer film during operation to reduce friction and protect mating surfaces.
2. Bronze powder layer: Acts as an intermediary between the self-lubricating layer and the steel base.
3. Low carbon steel layer: Provides structural support and heat dissipation during operation.
4. Copper/tin coating: Offers corrosion resistance to the washer.

SF-1 washers are widely used in various machinery applications such as printing presses, textile machines, automotive components, agricultural machinery, and more due to their self-lubricating properties, wear resistance, low friction coefficient, and ability to operate without oil lubrication. These washers contribute to cost reduction, machine size optimization, noise reduction, and prevention of shaft wear issues.

SF-1 Thrust Washer WC10 12 14 16 18 20 24 26 28 32 38 42 48 52 62 WASHER

Dry Thrust Washer- SF-1WC, PTFE coated thrust washers

thrust bearing washer, polymer thrust bearing washer

SF-1WC Standard dimensions for thrust washer bearings（SF-1、SF-1T、SF-1P、SF-1D、SF-1B、SF-1S）

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Materials

1. Modified polytetrafluoroethylene (PTFE) lead (Pb) mixture 0.01~0.03mm, a wear-resistant material, the operation process can form a transfer film to protect the grinding shaft.
2. Copper powder layer 0.2~0.3mm to improve the binding strength of PTFE/Pb and steel plate, with good bearing capacity and wear resistance. At the same time, copper is a good thermal conductivity material, which can quickly transfer the heat generated during the operation of bearings.
3. Low carbon steel 0.7~2.3mm, improve bearing capacity and heat transfer effect.
4. Copper/tin electroplating, copper plating 0.008mm, tin plating 0.005mm, so that the bearing has a good corrosion resistance.

Sf-1 Self-lubricating Thrust Washer

SF1 self lubricating thrust washer, low friction PTFE DU washers

This thrust washer is steel based, an intermediate layer of porous bronze particles sintered and calendered with PTFE and filler mixture as a surface layer.
It is low-friction, anti-wear, anti-corrosion and can be used without lubrication. Furthermore, it is low cost, low vibration and low noise.
SF-1 is widely used in various sliding motions of different types of machines, such as printing machines, textile machines, tobacco machines, gym machines, hydraulic vehicles, automobiles, motorcycles, agricultural and forestry machines and so on.
It is a lead-free Thrust Washer Plain Bearing.

High quality low carbon steel as the matrix  

The Thrust Washer Plain Bearing is a mixture of polytetrafluoroethylene (PTFE) rolled on the surface of sintered spherical bronze layer in the middle of high quality low carbon steel. It has good self-lubrication, wear resistance, low friction coefficient, good coupling performance, low noise and other properties and is widely used in sliding parts of various machinery.  

1. PTFE and lead mixture 0.01-0.03mm
2. Spherical bronze powder 0.2-0.3mm
3. Steel back 0.7-2.3mm
4. Electroplating layer: tin layer thickness of 0.005mm, or copper layer thickness of 0.008mm

APPLICATION
1. No oil lubrication or less oil lubrication, suitable for refueling or more difficult refueling occasions, can be used without maintenance or less maintenance;
2. Good wear resistance, small friction coefficient, long service life; 3. Can be used in the range of -195℃ ~ +280℃;
4. Good running performance, low noise, no pollution; 5. Thin wall structure, light weight, can reduce the mechanical volume;
6. Transfer film can be formed during operation to protect the grinding shaft without shaft biting;
7. The hardness of the grinding shaft is low, and the shaft without quenching and tempering treatment can be used, thus reducing the processing difficulty of relevant parts;
8. No water absorption, oil absorption, small thermal expansion coefficient, good heat dissipation, stable size;
9. The back of the steel can be electroplated with a variety of metals, so it can be used in corrosive media and will not rust;
At present has been widely applied to various mechanical sliding parts, such as automatic mechanical equipment (telescopic, swing, slide, bending, cyclotron, turning parts) hydraulic cylinder guide sleeve, gear pump pu, textile machinery, vending machines, plastic molding machine, die-casting machine, rubber machine, tobacco machine, fitness equipment, office machinery, hyd raulic truck, automobile, motorcycle, forestry machinery, etc.

The product name
Self-lubricating thrust washer

Bearing mechanism

Solid friction

Product composition

The steel base copper plating

Product features

Good abrasion resistance
Small coefficient of friction
Long service life
Strong corrosion resistance
Oil-free self-lubrication

Product use
Used in all kinds of machinery Lubrication part
Such as automatic machinery and equipment

Sf-2 Thrust Washer Plain Bearings

The SF-2 thrust washer material is a PTFE-modified surface layer filled with POM plastic of the three-level self-lubricating composite material, which is a benign boundary lubricating material, and therefore particularly suitable for low-speed and loaded rotational movement. high, rocking motion and frequently open and close under load and difficult to form hydrodynamic lubrication of bearings, thrust washer only, slider, tees, and other friction parts. The SF-2 can fully utilize the grease trace lubrication under boundary lubrication conditions without refueling for long-term maintenance.

High-quality low carbon steel as the matrix

The Thrust Washer Plain Bearing is made of high-quality low carbon steel and sintered spherical porous bronze powder in the middle, which is firmly integrated with surface modified POM. Surface rolling oil storage pit to achieve good lubrication between friction surfaces. It has good wear resistance and bearing capacity, steel back surface coating corrosion resistance, widely used in automobile chassis, forging machine tools, mining machinery metallurgy machinery, water conservancy and steel rolling industry.

1 pom0.30-0.50mm modified polyformaldehyde, high wear resistance, low friction coefficient, assembly must be coated with lubricating grease.  

2. Copper powder layer 0.2-0.3mm, with good bearing capacity and wear resistance.  

3. Low carbon steel, improve bearing capacity and heat transfer effect.  

4 Electroplating: tin plating thickness of 0.005mm, or copper plating thickness of 0.008mm  

APPLICATION CHARACTERISTICS

Especially suitable for low speed and heavy load of rotating motion, swing motion and often open and close under the load and not easy to form fluid lubrication parts; The plastic layer on the surface of the shaft sleeve can have a certain amount of allowance when forming, pressing into the seat hole can be self-processing, in order to achieve better assembly size is mainly used in metallurgical machinery, mining machinery, water conservancy machinery, car chassis, construction machinery, agricultural machinery, steel rolling machinery, etc.

Product name

Composite thrust thrust washer

Bearing mechanism

Solid friction

Product composition

Steel base copper plating  

Product features

Good wear resistance, small friction coefficient, long service life and strong corrosion resistance

Product use
Used in all kinds of machinery Lubrication part
Such as automatic machinery and equipment