Hardware Knowledge Hall: New applications and basic performance requirements of bearings

SF-2 boundary lubrication bearing: acidic polyformaldehyde, with high wear resistance, the bearing surface is arranged regularly with oil storage pits and must be covered with lubricating grease when assembling, especially suitable for high load and low speed Rotational motion, rocking motion, and often under load, open and close the parts that are not easy to form fluid lubrication. Under boundary lubrication conditions, it can be used for a long time without refueling and maintenance, and refueling during the process can further extend the service life of the bearing , Currently suitable for metallurgical machinery, mining machinery, water conservancy machinery, auto parts, construction machinery, agricultural machinery, etc.

Oil-free self-lubricating bearings: This product is made of steel plate as the base, sintered spherical bronze powder in the middle layer, and the surface layer is rolled with a mixture of polytetrafluoroethylene [ptfe] and lead. It has the characteristics of low friction coefficient, wear resistance, corrosion resistance, oil-free self-lubrication and long service life. Using it can reduce costs, reduce noise, and prevent sticking and slipping. It is widely used in the sliding parts of various machinery such as printing presses, textile machines, hydraulic pallet trucks, tobacco machines, medicinal machinery, fitness equipment, micro motors, automobiles, motorcycles, etc.

Metal base inlaid solid self-lubricating bearing: It is a novel lubricating bearing with the characteristics of metal bearing and self-lubricating bearing. The metal matrix bears the load, and the specially formulated solid lubricating material plays the role of lubrication. It has the characteristics of high bearing capacity, impact resistance, high temperature resistance, and strong self-lubricating ability.

Traditional oil-impregnated bearings: due to the advantages of low noise and self-lubricating, oil-impregnated bearings have become the new favorite of computer CPU fan bearings, and the market demand is large; in addition, as people’s requirements for noise become higher and higher, The application of oil-impregnated bearings in daily household appliances is also expanding.

The basic requirements of bearing materials depend to a large extent on the working performance of the bearing. Whether the selection of materials for rolling bearings is appropriate will have a great impact on its performance and life. Under normal circumstances, the main failure forms of rolling bearings are fatigue spalling under the action of alternating stress, and loss of bearing accuracy due to friction and wear. In addition, there are also cracks, indentations, rust and other reasons that cause abnormal damage to the bearing. Therefore, rolling bearings should have high resistance to plastic deformation, less friction and wear, good rotation accuracy, good dimensional accuracy and stability, and long contact fatigue life. And many of the properties are determined by materials and heat treatment processes.