CHARACTERISTICS

MATERIAL AND COMPOSITION

Steel backing with a layer of sintered tin/bronze, pores filled and covered with a running-in layer of PTFE with molybdenum disulphide additives

• PTFE Lining
• Porous Bronze Powder
• Low Carbon Steel
• Tin plating or copper plating

CHEMICAL PROPERTIES

The steel backing and the sintered tin / bronze layer are the main factors that determine the chemical resistance of composite plain bearings, since the sliding layers (coating) are resistant to most chemicals. The cover layer is practically inert due to its PTFE content, although at increasing temperatures molten alkali metals and free fluorine attack it.

At room temperature, the sintered tin / bronze structure has good resistance to sea water, steam, atmospheric influences, saline solutions and sulfuric acid, but not to oxidizing acids or ammonia-containing media.

All exposed surfaces of the steel substrate are electrolytically tin-plated, but this only provides limited corrosion protection in most applications. In cases where the washers must be exposed to a corrosive environment or where there is a risk of corrosion as a result of the steel bracket coming into contact with the housing material, the bracket may be electrolytically coated with a nickel, chromium or zinc coating.

DIMENSIONS: Size Of Washer:d D T M H

AVAILABILITY

Washer forms available in standard dimensions made to order.

BOUNDARY LUBRICATING BEARING ADVANTAGE

1. Good load and anti-wear capacity.
2. Fits for the motion of rotation and sway or frequent stop-start with high load and low speed condition.
3. It can work long time without oil in the condition of boundary lubrication, add oil or grease when operating can make it working time longer.

RANGE OF APPLICATION

Composite bearing PTFE Washer series are widely used on automotive chassis, forging machines, mine quarrying machines, metal melting and casting machines and in water irrigating and steel rolling industries.

SPECIAL MANUFACTURING

Special dimensions are available on request.

Standard sliding layer material. It combines high load bearing and wears resistance performance, suitable for hard shafts ≥HRC35 or hard anodized aluminum shafts.

Excellent wear resistance, lower starting friction force, suitable for hard shafts or hard anodized aluminum shafts.

Bearing Back Material

The standard bearing back material is light-weight and high-strength steel backed with ptfe. When the bearing is used in applications with high requirements for corrosion resistance, it is recommended to use stainless steel backing as the wear-resistant layer material;