oil-free bushing slide bearing with good quality

oil-free bushing slide bearing with good quality System 1

oil-free bushing slide bearing with good quality

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Loading Port:: Shanghai

Payment Terms:: TT OR LC

Min Order Qty:: 500 pc

Supply Capability:: 200000 pc/month

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Specifications

oil-free bushing
1,can be work without oil condition
2,low wear,low friction and with long life.
3,low vibration,low noise

oil-free bushing

Material

1.PTFE with fibre 0.01~0.03mm

2.Porous bronze 0.2~0.3mm

3.Steel backing 0.7~2.3mm

4.Tin-plating 0.005mm or copper plating 0.008mm

Technical

Load capacity 140N/mm2

Temperature -195°C ~ +280°C

Speed limit 5m/s

Friction coef(u) 0.04~0.20

PV Limit(Dry) 3.6N/mm2 .m/s

Application

1.PTFE and fibre can protect the shaft while in operation.

2.It is suitable for the machine required harmless to people because

of Lead-free.

3.Goodload capacity and anti-wear.

4.Bronze and steel have good thermal conductivity.

5.Anti-corrosion because of surface plating.

6.It is widely used in general machines,and suitable for food machine,pharmaceutical

machine,tobacco machine etc.It will subsitute SF-1 series bushings in future because of environment protection.

oil-free bushing slide bearing with good quality

Q: Is plain bearing just linear bearing or linear bearing is plain bearing?: Journal bearings are a large class of bearings. General bearings can be divided into rolling bearings and sliding bearings. Linear bearings are one of the rolling bearings, and the two are not the same concept at all.Bearing (sliding), in brief, is the shaft (the shaft is supported by the bearing as a part of the Journal) and the Bush (with the shaft neck matching parts known as the Bush), sliding friction in the work of the bearings.

Q: Is a simple answer, the best point in detail, I test graduate students to use, the official written point.: Plain bearings, usually made of bronze or Babbitt, have heavy duty characteristics and require a standing lubrication system to provide lubrication. Light load can be lubricated by powder metallurgy.Ball bearings are usually made of ball bearing steel, which is lubricated with grease and requires regular replacement of the grease. Rolling bearings usually can bear some axial force, but the sliding bearings do not have this function.

Q: What are the automotive engine journal bearings?: Also called white alloy Babbitt, tin based white metal used to reduce friction, but low fatigue strength, heat resistance, temperature exceeding 100 DEG C hardness and strength decreased significantly, the gasoline engine used to load. The outstanding advantages of copper lead alloy are its large carrying capacity, high fatigue resistance and good heat resistance. But the running in performance and corrosion resistance are poor. In order to improve its running in and corrosion resistance, a layer of soft metal is usually electroplated on the surface of copper lead alloy into three layers of structural bearings, which are mostly used in high strength diesel engines. Al based alloys include aluminum, antimony magnesium alloy, low tin aluminum alloy and high tin aluminum alloy. High tin aluminum alloy bearings containing more than 20% of tin are widely used in gasoline engines and diesel engines because of their better bearing capacity, fatigue resistance and antifriction performance. The soft coating refers to electroplated a tin or tin lead alloy on the antifriction alloy layer. Its main function is to improve the running in performance of the Bush and to be used as the protective layer of the antifriction alloy layer. When the Bush is in the free state, the distance between the outer ends of the two joint surfaces is larger than the diameter of the bearing bore, and the difference is called the opening of the bearing bush.

Q: What are the properties of plain bearing alloys?: The sliding bearing alloy should have the ideal organization of both hard and soft:(1) soft matrix and uniformly distributed hard point.(2) a soft particle is arranged on the ideal tissue of the hard base sliding bearing alloy. When the bearing is working, the soft tissue is firstly worn down and sunken, and the lubricant can be stored to form a continuous distribution of oil film, while the hard component plays the role of supporting the journal. Thus, the actual contact area of the bearing and the shaft neck is greatly reduced, so that the friction of the bearing is reduced.(3) the sliding bearing alloy has sufficient compressive strength and anti fatigue performance; good performance for reducing friction (friction coefficient is smaller); reserve good lubricating function; good adaptability; good thermal conductivity and corrosion resistance; good process performance, which is easy to manufacture, low price.

Q: What are the ways to flush bearings?: The test, can be used to clean the remaining oil scraping feeler, apply the thumb, index finger back and forth slowly rubbing fingers if there is research, the rustling sound, it indicates that the bearing is not clean, should wash again. The bearing in hand, pinch the inner ring, the outer ring (toggle horizontal rotating large bearings can be placed in the assembly stage, the inner pad, the outer ring is suspended, pressing within the circle, rotating outer ring), with flexible rotation, no block, no beating for qualified. After cleaning the bearings, fill in the lubricant, it should be placed on the assembly table, the next pad with a net cloth or paper pad, covered with plastic cloth, pending assembly, not allowed on the ground or box. When moving bearings, it is not allowed to use the hand directly, Dafanb gloves or net cloth should be used to pack the bearings before they are taken. Otherwise, because of the sweat and moisture in the hands, it is easy to cause the bearings to be rusted. On both sides of the bearing with shields or seals, and bearings coated with anti rust, lubrication and oil, because at the time of manufacture have been injected into the grease, so do not wash before installation, for example, 51708ZHS - 12, and - 12 type tractor and redguards Dongfanghong 20 tractor clutch (original code 688808) bearing.

Q: What are the properties of plain bearing materials? Are there any materials that can satisfy these properties simultaneously?: 4. thrust bearing (understand) (1) thrust bearing fixed and tilting. (2) the thrust surface of thrust bearing can use the end surface of the shaft, or can make a convex shoulder or thrust the disc in the middle of the shaft. (two) the types and characteristics of rolling bearings; 1. classification of rolling bearings according to the shape of the rolling body is divided into: ball bearings, roller bearings. 2. characteristics of rolling bearings (1) advantages: compared with plain bearings, rolling bearings have the advantages of small friction resistance, quick starting, high efficiency, simple lubrication and easy replacement. (2) disadvantages: poor shock resistance, noise at high speed and long service life, as opposed to liquid lubricated sliding bearings.

Q: In power plants, are the bearings used in turbines rolling or plain bearings?: Of course, sliding bearings, the advantages are: (1) good bearing, pressure (2), large contact surface, wear resistance (3), good fixation, to prevent rotation when the axis deviation from the wear and tear, and the occurrence of an accident.

Q: Which foreign brands are good for self lubricating sliding bearings?: Foreign brands but also so a few, Saint Gobain (France), SKF, Schaeffler (Germany), GGB and Federal- Mogul, Japan Oiles and Daido.

Q: Is it good for rolling bearings of single cylinder diesel engines or for sliding bearings?: sliding bearing can be conveniently and the diesel engine oil lubrication system integrated with lubrication oil through the transmission oil inside the cylinder body.

Q: Bearing bearing belongs to what type of: The bearing of an internal combustion engine is a sliding component in the sliding bearing of an internal combustion engine. The shape of the Bush is a semicircle cylinder shaped like a tile, called a bush. Because of the heavy weight of the internal combustion engine shaft, the needle roller (bead) bearings can not be used, but only sliding bearings can be used.When the sliding bearing is working, a thin oil film is required between the Bush and the rotating shaft to lubricate the sliding bearing. If due to bad lubrication, there is direct friction between bearing and shaft friction will produce high temperature, while the bearing is due to the special high temperature resistant alloy material, but high temperature direct friction on the burn is still.

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