Boundary-lubricated bearings (DX in foreign countries) are made of high quality low carbon steel plate or bronze plate as the substrate. middle: sintered porous spherical bronze powder, friction surface rolled modified polyformaldehyde (POM and Pb), and through high temperature plasticization. (also known as pre-lubricated bearing material), and rolled into a three-layer boundary-lubricated bearing material by high temperature plasticization. This material provides a good load carrying capacity. The material can provide good load bearing and wear resistance, and the friction surface is equipped with oil storage pits.

In the presence of a small amount of lubricating medium, its performance is better than a variety of other sliding bearing materials. The product is suitable for normal temperature. The product is suitable for working under normal temperature conditions and medium (heavy) load, low speed occasions, to replace the traditional copper bush, that is, to reduce costs and extend the service life. Use life. Composite bearing boundary lubrication bearing is divided into steel-based and copper-based two.

1 Material structure

Modified paraformaldehyde

Sintered spherical bronze powder

Metal matrix

Steel-based anti-corrosion tinned layer

2. Typical features

Suitable for use under greased or oiled lubrication conditions, with high load-bearing capacity and good wear resistance.

Suitable for dry rotating, reciprocating and oscillating forms of motion, as well as frequent starting, intermittent motion or large loads, etc.

The occasion of easy formation of oil film lubrication.

Stable low friction coefficient and excellent wear resistance under high load and low speed lubrication conditions.

Friction surface layer can be processed twice, after the bearing is mounted in the seat hole, which can further improve the fit accuracy.

-Long working time under boundary lubrication conditions, such as regular grease maintenance in the process of use, can extend the use of

Long working time under boundary lubrication condition.

Thin-walled structure, light weight and small volume, suitable for compact design.

Good dimensional stability and high mechanical strength

Hydraulic and hydropower industry. Hydraulic machinery: hydraulic steel gate plane support slide, etc;

Hydraulic turbine: guide vane (upper guide, middle guide, lower guide) sleeve, runner sleeve, pin sleeve (connecting rod pin, push-pull

rod pins, piston pins of catcher), anti-wear ring plate (thrust ring), anti-wear block, control ring side tiles, etc.

Lifting and transportation machinery: forklift truck opening and lowering devices, portal cranes and pulley sets, brakes, stacker-reclaimer hinges, shore crane support hinges, etc.

chain, shore crane support hinge, etc.

Automobile, tractor: automobile chassis, steering knuckle, steering machine, clutch separation fork and pedal shaft bushings, suspension shaft bushings, tractor crankshaft bushings, etc.

hanging shaft bushings, tractor rocker arm bushings, etc.

Rubber machinery: three-roller, four-silver calender, closed type rubber refining machine (compacting machine), vulcanizing machine, etc..

Forging machine tools: a variety of shears, coiling machines, bending machines, presses, such as the rotation and sliding parts

Petroleum machinery: pumping machine reducer intermediate shaft and output shaft sleeve, etc.

Valve industry: butterfly valve, globe valve, etc.

Other: metallurgical machinery, mining machinery, construction machinery, agricultural machinery and steel rolling industry, etc.

4.Product extension

Lead-free environmental protection bearing: is based on the original material, according to the international environmental protection requirements and the development of

A new product. In addition to being widely used in general-purpose machinery, the product is especially suitable for environmentally friendly applications because it does not contain lead in the modified paraformaldehyde.

The product is especially suitable for use in occasions with environmental protection requirements.