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The basic information
Powder metallurgy bearings may not need to add lubricating oil for a long time.
The higher the porosity of powder metallurgy bearing, the more oil storage, but the more the porosity, the lower its strength.
This kind of bearing is often in the state of mixed lubrication, sometimes can also form film lubrication, often used to supplement lubricating oil and light load and low-speed situation.
Powder metallurgy bearings with different oil content are selected according to different working conditions. When the oil content is large, it can be applied without supplementary lubricating oil and under low load. Small oil content, can be used under heavy load and high speed; Graphite-containing powder metallurgy bearings, because of the graphite itself has lubrication, can improve the safety of bearings, its disadvantage is low strength; In the case of no corrosion, can be considered to choose cheap, high strength iron-based powder metallurgy bearings, but with the journal, hardness should be properly improved
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Metal powder and other powder metallurgy bearing anti-friction material powder pressing, sintering, plastic and oil, and has a porous structure, after infiltration in hot oil, pore Spaces filled with lubricating oil, work due to the effect of suction of the shaft neck rotation and friction heat, expansion of metals and the oil is heated, the oil out of the pore, the lubrication and friction surface, after bearing cooling, The oil is sucked back into the pores.
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Oil-impregnated, maintenance-free, self-lubricating
Bronze bearing forms available in standard dimensions
- Cylindrical bronze bushes
- Bushing with flange
- Thrust washer
Sliding Bearing forms made to order: cylindrical bronze bushes with non-standard dimensions, flanged bushes, sliding plates, customized bearing designs
Powder Metallurgy, Sinter Metals, Powdered Metals
Powder metallurgy is the process technology of making metal powder or using metal powder (or the mixture of metal powder and non-metal powder) as raw material, through forming and sintering, making metal materials, composite materials and various types of products. Powder metallurgy and ceramic production have similar places, both belong to powder sintering technology, therefore, a series of new powder metallurgy technology can also be used for the preparation of ceramic materials. Due to the advantages of powder metallurgy technology, it has become the key to solve the problem of new materials, and plays an important role in the development of new materials.
Powder metallurgy includes powders and products. The powder is mainly metallurgical process, and the literal. Powder metallurgy products, on the other hand, are often far beyond the scope of materials and metallurgy and are often multidisciplinary (materials and metallurgy, machinery and mechanics, etc.) technologies. Especially modern metal powder 3D printing, set mechanical engineering, CAD, reverse engineering technology, layered manufacturing technology, numerical control technology, material science, laser technology in a body, making powder metallurgy products technology become a modern comprehensive technology across more disciplines.
Sintered bronze sliding bearing – oil-soaked and self lubricating
- Suitable for high sliding speed at low load capacity
- Sintered bronze
- Support materialCuSn10 (SINT B50)
- Other Cu-Sn-alloys on request
- Specific load capacity static≤ 10 [N/mm2] to 50 [N/mm2] at SINT A51
- Specific load capacity dynamic≤ 5 [N/mm2]
- Sliding speed≤ 6 [m/s]
- Friction value ***0.05 [µ] to 0.20 [µ]
- Temperature strain– 20 [°C] to + 100 [°C]
- Max. PV-value1.6 [N/mm² x m/s]
- Housing ØH7
- Bushing inner-Ø after mountingH7 / H8
- Shaft tolerancef7 to h8
- Steel > 200HB dressed to size, surface roughness ≤ Rz 4
- The application of an adequate force fitting mandrel is advisable
- Sintered bronze sliding bearing is a self-lubricating and maintenance-free sliding bearing
RANGE OF APPLICATION
- electrical motors and gearing mechanisms, precision engineering, home appliances
- Automotive equipment: starters, electric windows, pedals, wipers, fuel systems, cooling systems, Exhaust Gas Recirculation (EGR), brakes, transmission, mirrors, sunroof, seating systems, etc.
- Medium and low power electric motors and gearboxes.
- Linear and rotary actuators: pneumatic, hydraulic and electromagnetic types.
- Household appliances: washing machines, fans, extractor fans, shaving machines, epilators, juicers, rotisserie, air conditioning, portable machine tools, coffee machines, whisking machines, vacuum cleaners, lawnmowers, boilers, etc.
- Home appliances: locks, garage doors, awnings, roller shutters, sliding doors/windows, office swivel chairs, rolling trolley wheels, hinges, furniture, etc.
- Industrial sector: bottling machinery, wood-working machinery,
anemometers, gardening, automatisms, key duplicating machines, sewing machines, industrial
vehicles, electrical switchgear, etc.
• Other markets: mobility, medical,
catering, industrial machines, farm
machinery, toys, etc
Powder metallurgy bearing
Powder metallurgy oil bearing (oil-bearing) is a kind of porous alloy product with lubricating oil in the pores. When the shaft rotates, the friction between the shaft and the oil-bearing causes the temperature of the oil-bearing to rise and the pumping action. Lubricating oil leaks out of the friction surfaces of the inner or outer diameters of the oil-bearing when the shaft stops rotating. The lubricating oil flows back into the bearing. Therefore, the consumption of lubricating oil is very small and can be used for a long time without an external supply of lubricating oil. Very suitable for oil supply difficulties and avoid lubricating oil pollution occasions.
Oil bearing is widely used in: motor industry, automobile and motorcycle industry, home appliance industry, digital products, office equipment, power tools, textile machinery, packaging machinery, and other types of mechanical equipment.
Generally speaking, powder metallurgy oil-bearing is mainly made of raw material powder through pressing, sintering, shaping, oil immersion, and other processes. Machines are mostly highly automated. Daily output is relatively large, most of the products can be formed at a time, so the larger the batch better the production. And with a little less mold may do hundreds of thousands of words, more words may do more than a million. But the cost of the mold is relatively high, so it is not easy to do if the batch is small, and the time to replace the mold is also long.
Powder metallurgical oil-bearing can generally be formed once, basically without cutting. Cost is lighter than machining, material waste is less, so the price is cheaper. It is also in line with the national policy of promoting energy conservation, so it is considered a technology that will not fall behind The Times.
The matrix of powder metallurgy oil-bearing has been filled with a lubricating oil by vacuum immersion method, and the lubricating oil will ooze out to the running surface due to temperature rise and pumping during operation, so it can be used on occasions without adding lubricating oil.