Mechanical Bearing 608

Therefore, it is required Mechanical Bearing 608 the brake fluid should have a higher boiling point and a lower evaporation rate to avoid reducing the generation of air lock. Therefore, it is required that the brake fluid does not produce thermal decomposition and overlap, which will increase the viscosity of the oil and does not allow the formation of sludge deposits. If the brake fluid with low boiling point and easy to evaporate is used, it will At times, due to the evaporation of the brake fluid, the pipes of the local brake system are filled with steam, resulting in air lock, causing brake failure.

There are many factors that cause the failure of the brake system of the loader, such as brake failure caused by damage to the brake element. There are many rubber seals and cups in the brake system to keep the brake system completely airtight.

Frequent braking when the loader is running will generate a lot of friction heat, which will increase the temperature of the braking system.　　(4) Better corrosion resistance 　　 The brake fluid should have good corrosion resistance for various metal parts of the brake. At present, the service brake system of domestic loaders has almost All use air-capped oil caliper disc brakes, and the selection of brake components is roughly the same as that of automobiles.

and some inferior brake fluids have a lower dry boiling point, which affects the safety of braking. When the water enters the brake fluid, the boiling point of the brake fluid will drop. It is best not to use alcohol or cleaning agents. It does not mean that the performance after mixing is unchanged. (2) Inferior brake fluid has strong water absorption. The phenomenon of external fuel injection. Fourth, the simple identification method of brake fluid and the matters needing attention in use (1) Pour a little brake fluid on the palm, the real brake fluid will generally feel a little cold at first, and then feel a little hot after a while, and the brake fluid will not easily volatilize : If you feel that the brake fluid is abnormally cold, does not feel hot, and will evaporate slowly, it is probably fake brake fluid.　　

 That is, at one end of the steel, a saw (annealed material) and a grinding wheel cutter (not annealed material) are used to cut a wafer sample with a thickness of 12 to 15 mm, and the tested side of the sample is ground with a grinder. 9. The reason for the formation of white spots is the existence of hydrogen in the steel, and the second is that the steel is not slowly cooled at 600~300℃ after forging, and the hydrogen is not fully diffused, resulting in structural stress and cracking.

Chemical analysis methods are relatively slow and are not suitable for production sites. Steel wire discs are usually inspected with naked eyes. The tempering process of high inkstone chromium bearing steel is as follows: quenching temperature 820~840℃; tempering temperature: 150℃, tempering time 1~2h;

The inspected surface of the sample should be ground and polished; the inspected surface for checking the annealing structure and the temperature of the decarburized layer should be etched with 2% nitric acid alcohol solution and inspected; the inspected surface of non-metallic inclusions should be polished, No erosion inspection; carbide strips, carbide liquefaction, and carbide mesh surfaces should be etched with 4% nitric acid alcohol solution before inspection.

This method can greatly reduce the long life bearing time of shutdown, which is beneficial to improve the efficiency of repair work, reduce costs and ensure the quality of repair. During the overhaul process, attention should be paid to eliminate potential safety hazards, such as adjusting the brake gap, replacing worn-out clutch friction plates, and enabling the seat of the cab to be easily adjusted up and down, as well as eliminating some problems that may cause injury to the driver and maintenance personnel and machine failure Safety hazards. In order to ensure the quality, the parts that need to be replaced should be purchased from the original manufacturer or the designated cooperating manufacturer as required. 

63 Series Ball Bearings

Domestic 63 Series Ball Bearings have also made certain progress in the application of high and new technology such as energy saving, consumption reduction, and pollution reduction, and the development of green energy to equip construction machinery. According to reports, developed countries have spent huge sums of money to dedicate themselves to scientific research in this area, and in accordance with the requirements of sustainable development, continue to develop intelligent, low-pollution loaders and various maneuvers with microclimate conditions and comfortable cab Type construction machinery and so on.

As soon as possible, realize the transformation of product research and development strategy that focuses on introducing technology and tracking development to focusing on independent innovation and taking both introduction and absorption into consideration. Only in this way can the company have a solid foundation for scientific research and development, so that it can accumulate and have an inexhaustible development stamina.

Make the product 'zero defect' and 'zero inventory' possible. It can be seen that it is a major and urgent research topic that is driving the industry and has a strong overall effect.2 The long period from scientific research results to popularization and application is long. Some experts pointed out that today's information technology has become the basic environment for the survival and development of manufacturing enterprises, and it is also a strong support for the development of the construction machinery industry. 5

Many well-known manufacturers in the world are bound to flock to the beach to set up locations and enter the Chinese market. In addition, through the implementation of informatization and strengthening of informatization construction, the overall competitiveness of enterprises can be improved, and it will also help construction machinery enterprises and products to go abroad. Perfect and improve the transformation of scientific research results and the technical information service system. 

air conditioner motor bearing

High-speed steel has good air conditioner motor bearing performance, good strength and toughness, so it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies.　　Performance Cutting tools made of high-speed steel are not only because of their high hardness, high wear resistance and sufficient toughness, but also an important factor that is red hardness.

Containing more alloying elements, the total amount can reach 10-25%.70 and 1. Red hardness refers to the ability of the cutting edge to resist softening under red heat during high-speed cutting. Increasing the quenching temperature can increase the red hardness of steel. High-speed steel has good process performance and good strength and toughness. According to different purposes, high-speed steel can be divided into general purpose and special purpose.

Therefore, it is mainly used to manufacture complex thin-edged and impact-resistant metal cutting tools, as well as high-temperature bearings and cold extrusion dies.70 and 1.W. According to the different alloying elements contained, it can be divided into: tungsten high speed steel (containing 9-18% tungsten); tungsten-molybdenum high speed steel (containing 5-12% tungsten and 2 to 6% molybdenum); high molybdenum high speed steel ( 0～2% tungsten content, 5～10% molybdenum content); vanadium high-speed steel, according to the difference of vanadium content, it can be divided into general vanadium content (containing vanadium 1～2%) and high vanadium content (containing vanadium 2. After quenching, it generally needs to be tempered 3 times between 540～560℃.

After quenching, it generally needs to be tempered 3 times between 540～560℃.　　High-speed steel is a complex steel with carbon content generally between 0. In order to increase the service life of high-speed steel tools, the surface can be strengthened, such as low-temperature cyanidation, nitriding, sulfur and nitrogen co-infiltration, etc. Tool steel with high hardness, high wear resistance and high heat resistance, also known as high speed tool steel or front steel. In addition to the high-speed steel produced by the smelting method, powder metallurgy high-speed steel appeared after the 1960s.

Mechanical Bearing 6002

How to obtain the spheroidization structure is an important issue in the production of bearing steel, and controlled rolling and cooling is an important Mechanical Bearing 6002 production process of advanced bearing steel. The subsequent 720℃~730℃ recrystallization annealing was changed to 760℃ structure annealing.

Developed high-frequency hardening bearing steel, using ordinary medium-carbon steel or medium-carbon manganese, chromium steel to replace ordinary bearing steel through high-frequency heating and quenching, which not only simplifies the production process, reduces the cost, and increases the service life.4ppm, reaching the level of vacuum remelted bearing steel. If the eutectoid steel or high-carbon steel has a fine grain structure before hot working or can form fine grains during processing, it will exhibit superplasticity at a certain strain rate within the melting temperature range (0.6).

The oxygen content of bearing steel produced in Japan and Sweden has dropped below 10 ppm. At present, the longest type of continuous heat treatment furnace is 150m. Improve cleanliness (reduce the content of impurity elements and inclusions in steel), promote the small and uniform distribution of non-metallic inclusions and carbides in steel, and increase the contact fatigue life of bearing steel. In recent years, my country has also developed GCr4 bearing steel that can save energy, resources and impact resistance..　　

The fatigue life of GCr465 and SCM465 developed by Japan is 2~4 times higher than SUJ-2. Improving the cleanliness of bearing steel, especially reducing the oxygen content in the steel, can significantly extend the life of the bearing.　　 In recent years, Russia and Japan have adopted low-temperature controlled rolling (800℃~850℃).5 at 650°C. Japan and Germany have built high-cleanliness, high-quality bearing steel production lines, which has rapidly increased the output of steel and greatly improved the quality and fatigue life of steel. In this way, a structure with low hardness, good spheroidization and no network carbide can be obtained, and the key is to ensure that the intermediate drawing reduction rate is ≥14%.

6800 ball bearing

If metal particles are 6800 ball bearing, timely diagnosis and improvement measures should be taken; use a pure filter element that meets the requirements of the machine. ②Daily maintenance; check, clean or replace the air filter element; clean the inside of the cooling system; check and tighten the track shoe bolts; check and adjust the track back tension; check the air inlet heater; replace the bucket teeth; adjust the bucket gap; before the inspection Window cleaning liquid level; check and adjust the air conditioner; clean the floor in the cab; replace the filter element of the breaker (optional).

When cleaning the inside of the cooling system, after the engine is fully cooled, slowly loosen the water injection cap to release the internal pressure of the water tank, and then discharge the water; do not clean when the engine is working, the high-speed rotating fan will cause danger; when cleaning or replacing the cooling When liquid, the machine should be parked on a level ground; ③Check items before starting the engine. ④ Maintenance items every 100h. Increase the inspection of the water pump every 4000h; increase the replacement of hydraulic oil every 5000h. 2.

Carry out maintenance items every 100, 250 and 500h at the same time; replace the oil in the slewing mechanism box; check the oil level of the shock absorber housing (back to the oil); check all the fasteners of the turbocharger; check the turbocharger rotor Check and replace the tension of the generator belt; replace the anti-corrosion filter element; replace the oil in the transmission box. Park the machine on a concrete floor with good drainage;

fill up the fuel tank before storing, lubricate all parts, replace the hydraulic oil and engine oil, apply a thin layer of butter on the exposed metal surface of the piston rod of the hydraulic cylinder, and remove the negative terminal of the battery, or Unload the battery and store it separately; add an appropriate proportion of antifreeze to the cooling water according to the lowest ambient temperature; start the engine and operate the machine once a month to lubricate the moving parts and charge the battery at the same time; turn on the air conditioner and run it for 5-10 minutes. Management of other oils Other oils include engine oil, hydraulic oil, gear oil, etc.