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Gear grinding bearing of spiral bevel gears

Gear grinding bearing of spiral bevel gears We have learned, our country independent research and development of large equipment has been the restriction of the key components, especially our country automobile equipment, mining equipment, metallurgical equipment, oil equipment, building materials equipment, power generation and ship equipment in areas such as the large size and high precision spiral bevel gears have long been dependent on imports, only a few countries in the world capable of producing. Gear grinding bearing of spiral bevel gears This time through the identification and has the biggest outside the batch production of spiral bevel gear circle diameter of 1100 mm, the modulus maximum 24 mm, tooth width 190 mm, maximum bevel gear shaft positioning largest diameter is 200 mm, is currently the world's largest specifications of gear grinding spiral bevel gears. Appraisal committee believe that the success of the product, to fill the domestic blank, broke the monopoly of foreign products, effectively relieve the restricts the bottleneck of major equipment in key parts and components. The equipment processing outside diameter to 800 mm, only one of the biggest German equipment to 1000 mm, is our country after the United States, Germany, the third can produce CNC spiral bevel gear gear milling machine, grinding machine, lapping machine series of high-grade equipment. Wall to domestic YK22100 CNC spiral bevel gear milling tooth machine and gear grinding machine production products maximum diameter up to 1100 mm, and foreign equipment processing driving wheel positioning shaft can reach 100 mm diameter, wall needs up to 200 mm, the product accuracy can reach level 5 ~ 6, this is a breakthrough, is currently China's large size and high precision at home can get the biggest processing capacity of spiral bevel gears. As the large size and high precision high speed heavy users of circular arc spiral bevel gear, the Chinese heavy industry of chongqing gearbox co., LTD. Technology center, deputy director of the standing Cao Yun tells a reporter, along with the development of the economy, mining, cement, steel rolling industries such as the production line to develop, which has given rise to large reducer market in our country. Heavy tooth is one of the largest industrial heavy deceleration mechanism to build enterprise, the company in recent years, the design of vertical mill production reducer is to solve the cement grinding, power plant coal, steel slag, slag grinding powder and other special requirements of patent products. High precision, high strength, large size, hard tooth surface of spiral bevel gears is adapt to the specific requirements of the product high technology core components, but due to reasons such as foreign technology monopoly, heavy vertical mill tooth company since put into production using this widget has been dependent on imports, and resources is quite nervous. In the impression of Cao Yun, heavy gear company over the past 20 years has been looking for a supplier of large size high-grade spiral bevel gears in time. They went around the americas, Europe and Japan, with several countries products, general order cycle is long, expensive. Then choose a Nordic enterprise products, packing the maritime transport time after nearly two months, a pair of gears freight will be less than 20000 euros. Gear grinding bearing of spiral bevel gears This, he said happily, under the good, at home can get resources, components can effectively alleviate the bottleneck, the host can be greatly reduced the cost of the product, the heavy gear company's market competitiveness will be improved.
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Bearing failure prediction and prevention

Bearing failure prediction and prevention | fagbearings | Scoop.it
FND Bearings CO.,LTD Is Authorized Supllier Of Fag Needle Roller Bearings.Well Known Because Of Original Quality And Best Price In FagBearings In Asia Market.
FANADEbearing's insight:

Machinery manufacturing industry as the technology and equipment of the basic and strategic industry for national economic development, has the role of global, strategic, leading to the national economy and national security. The rapid development of balanced development of the world economy and China's economy, as well as the relevant national macro-control measures adopted, provides a good opportunity for development for industrial machinery manufacturing industry in China.

Bearing is widely used in machinery industry, the requirements of key parts of strict and basic parts, and the joint Fag Needle Roller Bearings  http://www.fagbearings-hk.com/Fag-Needle-Roller-Bearings.html ;             is a kind of special bearings, in the development of the industry in the growth period of sustained growth, market size, but space is limited. At present the domestic bearing market competition is intense, there is a bearing manufacturer of joint bearing into the possibility of market competition, along with the rapid development of society and technology, the joint bearing is increasingly high requirements.

A bearing (Group) Limited by Share Ltd (hereinafter referred to as the "A group") after fifty years of development, from the development of a small scale production enterprises become the biggest supplier of domestic joint bearing and the largest exporter, has entered the development stage, to achieve the annual sales income of sustained and rapid growth and net profit. Compared with the same industry competitors, A group has a competitive advantage in product quality, product variety, R & D strength and brand etc.. But in the internal management, there are also some short comings, restricting the rapid development of the company.

While the process as the enterprise management activities to ensure the effective implementation of the TIMKEN 387AS bearings        http://www.timkenbearings-hk.com/product/TIMKEN-387AS-bearings-49564.html  ;            industry, is very high for the fine management requirements, process control is the most important part of the overall functions of the company. Process is the connecting link of enterprise production and customer demand, process directly affects the quality of products and services. 

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Joint bearing heating device

Joint bearing heating device | fagbearings | Scoop.it
FND Bearings CO.,LTD Is Authorized Supllier Of Fag Bearings.Well Known Because Of Original Quality And Best Price In Fag Bearings In Asia Market.
FANADEbearing's insight:

Floating bearings if used in a harsh environment, bearing seals and seal covers are needed, because they can prevent dirt intrusion, extend the life of the bearings. In mill roll usually is supported by four columns sealed taper roller bearings. When using requirements under strong impact load, the intrusion of water and debris.
The influence of external environment on FAG bearings includes the following two aspects:
1, temperature: the influence of temperature on FAG bearing, using high temperature often said bearing is in abnormal situation. High temperature is also harmful to FAG bearings purchase  

http://www.fagbearings-hk.com/

      Sometimes the fag bearing overheating can be classified to fag bearing of lubricant. If the bearings are working in a temperature of more than 125 ℃, bearing life will be shortened. The causes of high temperature bearing include: lubrication inadequate or excessive lubrication, the lubricant. Contains impurities, heavy load, fag bearing ring, clearance, high friction and oil seal and so on.
2, vibration, vibration damage in FAG bearings can be said to be quite sensitive, peeling, indentation, rust, crack and wear will be reflected in the FAG bearing vibration measuring. So, through the use of special bearing vibration tester (frequency analyzer, etc.) can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Measured values of bearing or sensor installation position and different using conditions, thus requiring prior to each machine is analyzed by the measured value of the determined after judgment standard.

Japan FAG company developed super easy to seal the neck of cleaning roller bearing. This kind of bearing lubrication in harsh conditions, load volume increased by 34%,NSK bearings company           http://www.nskbearings-hk.com/ ;       and high reliability, long life and easy maintenance. This improvement is to optimize the performance of mechanical design, using new materials and patent the results of the sealing technology. Compared with the traditional roller bearing neck, this kind of sealing roller bearing neck is not only the basic dynamic load rating increased by 34%, and 2.7 times longer service life.
Super capacity seal clearer the second factor to improve the performance of journal bearing, FAG company developed Super - TF is adopted the bearing steel. This material has solved under the condition of pollution or insufficient lubrication bearing life problems. Experience shows that under the condition of pollution operation, bearings are susceptible to debris intrusion and pollution. FAG company research shows that on the edge of the pollution or lubrication bearing life can be improved under the condition of bearing steel microstructure and improve. The new seal structure is given priority to seal and hole sealing.
Bearing of negative pressure can result in water from the main sealing intrusion, hole sealing structure has a great influence on the negative pressure. Therefore, reduce the negative pressure in the bearing is to prevent the water into the basic requirements. The most effective way is to make the hole sealing no direct contact with water, while retaining the original function, prevent dirt and water hole sealing from roll neck side. Sealing methods for line contact surface contact, whether it's running process, or stationary process, surface contact hole sealing are characterized by the good sealing. As a result, the new super capacity sealed cleaning roller bearing neck than traditional sealing roller bearing neck has higher reliability.
In addition, SKF Italy sealed the company recently developed a new generation of oil and grease seal Mud Block. The optimization design of seal structure can effectively prevent the invasion of the earth. The traditional sealing structure features a radial sealing lip, outer diameter and seat between a clamping spring and the fixed sealing ring. New structure for the bushing and there is a push baffle between sealing ring, sealing ring liner and outer surface of inner diameter of the rubber, the lip is prelubricated with waterproof grease. According to the operation conditions and application requirements, Mud Block can be used all kinds of elastic material. These materials include: acrylic, polyacrylic ester, in fluorine rubber, etc.

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Reducing the noise of the bearing technology

Reducing the noise of the bearing technology | fagbearings | Scoop.it
FND Bearings CO.,LTD is specialized in produce FAG 6207 bearings,original quality,fifty years of cultivation.China's leading distributor.
FANADEbearing's insight:
In the process of bearing device the secondary reason is: the emergence of scars that FAG bearings are equipment, assembly, outer ring and inner ring skew; Or it is in the process of the device and assembly of emerging from the front load, eventually forming bearing scars that are emerging. Stop was device bearing do you want to work in accordance with the specification, to do not form many achievements, such as device or method not when, in the form of FAG bearings will form the raceway surface and bone surface formation bearing linear scars that are emerging. Deep groove ball bearing device for indirect reaction with the precision of the bearing when using, stature and functions. Although the bearing quality and so on various aspects are good, but the rolling bearing is precision components, its use should be measured accordingly. No matter how high performance bearing use, if use undeserved, will not get the desired performance. About the matters needing attention of FAG 6207 bearings series http://www.fagbearings-hk.com/product/FAG-6207-bearings-1706.html use the following article: (1) keep the bearing and the surrounding clean. Even the eyes can't see the little dust, also can bring bad influence to FAG bearing. So, keep the surrounding clean, dust from invading bearing. (2) used carefully. In use for bearing strong impact, will produce scar and creasing, become the cause of the accident. Severe cases, can crack, fracture, so must pay attention to. (3) using the appropriate operating tools. Avoid to existing tools to replace, must use the appropriate tools. (4) to pay attention to the corrosion of the bearing. FAG bearings operating, hand sweat will become the cause of rust. Pay attention to the operation with clean hands, it is better to try to bring gloves. FAG bearings in general, to control the noise of the impact, it must take countermeasures in view of the source of the noise, and to receive the cure effect. The main way is: Choose low noise cylindrical roller bearings (1); (2) to avoid resonance with the host, sensitive to avoid the resonance speed; (3) from the cylindrical roller bearing application link to try to eliminate noise; (4) in the other method is invalid, sound insulation and noise elimination of additional measures. FAG bearings when temperature increases, the first determine whether false action, such as really rise, should do the following: Check the cooling water pressure, water flow and pipeline system is normal. If water is likely to be lower filter blockage, cannot be handled in a timely manner, to stop treatment, when confirm can work, then put into use. Should be to check if the governor oil pressure, oil pressure is low can lead to cooling water hydraulic valve closed. Check whether FAG bearings have different sounds, and detection of cylindrical roller bearing place whether there is abnormal. Take oil whether there is a change of color, sample observation and test to see whether metamorphism. If confirm the degradation new oil should be replaced downtime. Check the oil standard oil level is normal, if abnormal, check that the sump oil discharge valve is shut. If the matter, should fill oil, if is the sealant mat permeability oil, should stop processing.
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FAG bearings need to maintain good

FAG bearings need to maintain good | fagbearings | Scoop.it
FND Bearings CO.,LTD is specialized in produce FAG 6203 bearings,original quality,fifty years of cultivation.China's leading distributor.
FANADEbearing's insight:

Under normal circumstances, when flange bearings were just lubricated with oil or grease, there will be a natural temperature rise that will last one to two days. Flange bearing stability and performance of the vibration is key to FAG 6203 bearings category  http://www.fagbearings-hk.com/product/FAG-6203-bearings-1702.html , such as peeling, indentation, rust, crack and wear will be reflected in the vibration measurement, therefore, through the use of special flange bearing flange vibration tester (frequency analyzer, etc.) can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Measured values for their conditions of use, or sensor installation position is different, so you need to in advance of each machine is analyzed by the measured value of the determined after judgment standard.
1 NSK imported bearings, shaft and chamber of tolerance of choice and control: after the imported bearing pressure should be flexible rotation without blocking. If there are any obvious rotation is not flexible, indicates the size of the shaft is too big, tolerance to downgrade. Such as imported bearing pressure into the shaft by hand after the rotation has obvious "sasha vujacic" feeling, may be the shaft or shaft roundness tolerance is too big. So to control the import of shaft and bearing chamber when the tolerance is to control good roundness, at present many domestic manufacturers to control the tolerance only, not to control the roundness.
2, imported bearing assembly way: because import bearings are high precision products, such as improper assembly is easy diagonal channel contact ball bearing damage, lead to damage of angular contact ball bearing. Angular contact ball bearing in the assembly shall have a dedicated mold, not casually, only when the pressure into the shaft
Can the small circle stress, pressure can force the circle circle. Require the use of pneumatic or hydraulic assembly, lower die when being connected to outside the state level, such as with sloping channel leads to import bearing from mechanical damage, and make the imported bearing guide ring.
3, assembly to prevent foreign body: NSK bearing import when loaded on the rotor to do dynamic balance will be generated when the dynamic balance of iron into easily import bearing internal, so it is best to install before import bearings do dynamic balance. There are some manufacturers in order to convenient assembly, assembly in imported bearing indoor coated with some oil or grease lubrication effect, but usually operators good amount of it is hard to control, if oil or grease on the import bearing indoor storing up more, the imported bearing rotates along axis to the imported bearing inside easily. Imported bearing chamber is best not to apply oil or grease, if must apply to control shall not be in imported bearing indoor have left.
On the surface of the flange bearing temperature, generally speaking, there are outdoor temperature can be predicted, if using the oil hole can directly measure the flange bearing outer ring temperature, is more appropriate.
Generally, the temperature with flange bearing operation began to slowly rise, 1 to 2 hours to reach a steady state. Flange bearing normal temperature due to the heat capacity of the machine, heat dissipating capacity, rotational speed and load. If the appropriate lubrication, installation department, FAG bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions.
Using thermal device can monitor the bearing temperature at any time, and realize e. automatic alarm when the temperature exceeds or stop to prevent burning high temperature often said bearing is in abnormal situation. High temperature is also harmful to FAG bearing lubricant. Sometimes overheated bearings can be classified to the bearing lubricant. If the bearings are working in more than 125 ℃, they will have a shorter bearing life. The causes of high temperature flange bearings include: lubrication inadequate or excessive lubrication, the lubricant. Contains impurities, the load is too large, the flange ring bearing damage, clearance, high friction and oil seal and so on.
Flange bearing temperature measurement can help make a thermometer on a regular basis, such as digital thermometer, can accurate FAG bearing temperature measurement and display by ℃ or Fahrenheit units. The importance of bearings means that when the damage cause of equipment downtime, so this class should be equipped with best temperature probe.
(1), keep the surrounding of the bearings clean. Even the eyes can't see the little dust, also can bring bad influence to FAG bearings. So, keep the surrounding clean, dust from invading bearing.
(2), Careful operation. In use for bearing strong impact, will produce scar and creasing, become the cause of the accident. Severe cases can crack, fracture, so must pay attention.
(3), using the appropriate operating tools. Avoid to existing tools to replace, must use the appropriate tools.
(4), attention should be paid to FAG bearing corrosion. During operation of the flange bearings, sweat will become the source of rust. Handle the operation with clean hands, and it is best to wear gloves.

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FAG bearings how should maintain?

FAG bearings how should maintain? | fagbearings | Scoop.it
FND Bearings CO.,LTD is specialized in produce FAG 6205 bearings,original quality,fifty years of cultivation.China's leading distributor.
FANADEbearing's insight:

Under normal circumstances, when flange bearings were just lubricated with oil or grease, there will be a natural temperature rise that will last one to two days. Flange bearing stability and performance of the vibration is key to FAG 6205 bearings picture              http://www.fagbearings-hk.com/product/FAG-6205-bearings-1704.html                    such as peeling, indentation, rust, crack and wear will be reflected in the vibration measurement, therefore, through the use of special flange bearing flange vibration tester (frequency analyzer, etc.) can measure the size of the vibration, through frequency points cannot deduce the abnormal situation. Measured values for their conditions of use, or sensor installation position is different, so you need to in advance of each machine is analyzed by the measured value of the determined after judgment standard.
1 NSK imported bearings, shaft and chamber of tolerance of choice and control: after the imported bearing pressure should be flexible rotation without blocking. If there are any obvious rotation is not flexible, indicates the size of the shaft is too big, tolerance to downgrade. Such as imported bearing pressure into the shaft by hand after the rotation has obvious "sasha vujacic" feeling, may be the shaft or shaft roundness tolerance is too big. So to control the import of shaft and bearing chamber when the tolerance is to control good roundness, at present many domestic manufacturers to control the tolerance only, not to control the roundness.
2, imported bearing assembly way: because import bearings are high precision products, such as improper assembly is easy diagonal channel contact ball bearing damage, lead to damage of angular contact ball bearing. Angular contact ball bearing in the assembly shall have a dedicated mold, not casually, only when the pressure into the shaft
Can the small circle stress, pressure can force the circle circle. Require the use of pneumatic or hydraulic assembly, lower die when being connected to outside the state level, such as with sloping channel leads to import bearing from mechanical damage, and make the imported bearing guide ring.
3, assembly to prevent foreign body: NSK bearing import when loaded on the rotor to do dynamic balance will be generated when the dynamic balance of iron into easily import bearing internal, so it is best to install before import bearings do dynamic balance. There are some manufacturers in order to convenient assembly, assembly in imported bearing indoor coated with some oil or grease lubrication effect, but usually operators good amount of it is hard to control, if oil or grease on the import bearing indoor storing up more, the imported bearing rotates along axis to the imported bearing inside easily. Imported bearing chamber is best not to apply oil or grease, if must apply to control shall not be in imported bearing indoor have left.
On the surface of the flange bearing temperature, generally speaking, there are outdoor temperature can be predicted, if using the oil hole can directly measure the flange bearing outer ring temperature, is more appropriate.
Generally, the temperature with flange bearing operation began to slowly rise, 1 to 2 hours to reach a steady state. Flange bearing normal temperature due to the heat capacity of the machine, heat dissipating capacity, rotational speed and load. If the appropriate lubrication, installation department, FAG bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions.
Using thermal device can monitor the bearing temperature at any time, and realize e. automatic alarm when the temperature exceeds or stop to prevent burning high temperature often said bearing is in abnormal situation. High temperature is also harmful to FAG bearing lubricant. Sometimes overheated bearings can be classified to the bearing lubricant. If the bearings are working in more than 125 ℃, they will have a shorter bearing life. The causes of high temperature flange bearings include: lubrication inadequate or excessive lubrication, the lubricant. Contains impurities, the load is too large, the flange ring bearing damage, clearance, high friction and oil seal and so on.

 

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Full-function CNC bearing heater is analyzed

Full-function CNC bearing heater is analyzed | fagbearings | Scoop.it
FANADE Bearings co,.ltd.【Professional Bearings supllier】All Bearings Series/Types with good quality&best price,email us now will get discount.
FANADEbearing's insight:

FANADE Industry(HongKong) Ltd is a professional agent and distributor of Parameter Of Bearing http://www.fagbearings-hk.com/ and has been engaged in Ball Bearing Series:Deep Groove Ball,Thrust Ball(Single Row Double-Directino/Doubel Row Single-Direction),Radial Ball,Self-aligning Ball,Filling Slot Ball,Counterbored Ball,Three/Four Point Contact Ball.Roller Bearing Series:Spherical Roller,Radial Roller,Cylindrical Roller,Tapered Roller,Needle Roller,Drawn Cup Needle Roller,Convex Roller,Concave Roller,Crossed Roller,Thrust Roller,Cylindrical Roller Thrust,Tapered Roller Thrust,Needle Roller Thrust,Spherical Thrust Roller.FANADE Bearing Seals Type include:RS,2RS,Z,2Z,2RZ,DDU,LLU,VV.Bearing Row:Single-Row,Double-Row,Four-Row with imported and domestic famous brands including SKF,FAG,NSK,TIMKEN,NTN,NACHI,IKO,INA,KOYO,FYH and so on from Swenden,Germany,France,Japan,India,USA,Canada,Brazil and other country in European/Asia and North America/South America.FANADE Bearing website provide Structure、Dimensions、Net Weight and all Parameter and Details of all kind of bearings.Here we'd like to talk about Full-function CNC bearing heater is analyzed.

An important part of a bearing is widely used in mechanical transmission; But in the process of installation repair; Cooperation for the service demand of "interference" has done a lot of difficult to operate; General to bearing the outside pressure or flame heating, cooking oil heating or use the most primitive way such as skills, use the hammer knock; This method is easy to constitute a shaft is hair; The bearing is broken and increase noise; Utilizing life down; Other big energy consumption; Workers' labor intensity weakness; Our factory developed newly for this YG51 DKQ - I ~ V type fully functional electronic CNC bearing collar heater dealt with the problem; Thus in the bearing application field for domestic initiative. Used to heat the bearing inner diameter size of 115-200 - mm

This machine use the large current in transformer short circuit ring and principle of eddy current heating of the motor; Introduction of Europe and the United States and related electronic components; Choose high precision temperature sensor; Electronic numerical control machine. Control bearing (set) temperature heating selecting parameter table accurately by using the principle of the metal thermal expansion, and to supply bearings (set) the cooperation with shaft with data and smooth installation.

A, primary layout:

Host by the power transformer, moving iron core (matching), temperature sensor, electronic numerical control number and other parts.

Second, the use and operation:

1, according to the bearing collar with shaft needs; Choose from parameter table will check heating temperature.

2, according to the inner diameter of the bearing dimensions; Choose the different diameter of core column; And its moving iron core spin on the bearing heater panel; Will be heated bearing sleeve on the moving core core column; Then will push panel together with the core of moving iron core column; The transformer constitute a closed magnetic circuit.

3, the heater power step switch to corresponding gear; Turn on the juice; According to the bearing, collar diameter intrusive, heating time can be finished within 30 seconds to three minutes.

4, will be the core temperature sensor plugs into the heating stand sensor socket; Then put the sensor temperature sensing head bearing or sleeve within the inner ring; And the bearing pressure on thermal head and working on the counter; The outstanding touch; So temperature measurement precision.

5, appeared open digital temperature controller, and open the power switch; Heating the beginning; Manifest temperature digital device constantly bearing heating temperature; Temperature for temperature rise to booking ambition; Can block the power supply, pull out iron core, panel to take out the bearing, set into the need to install trunnion, or come to an end.

Four, matters needing attention:

1, the heater warming faster. After turning on the power supply. To be close to stare at temperature appeared; After waiting for temperature rise to book value, immediately turn off the power supply; Avoid high temperature damage bearing metallographic arrangement.

2, use appeared after the temperature to digital device into the machine; Avoid damaged and blocked all the power.

3, remove the heat bearing must pay attention to safety. Avoid burnt.

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Various industries one-way bearing applications is introduced

Various industries one-way bearing applications is introduced | fagbearings | Scoop.it
FND Bearings CO.,LTD is specialized in produce FAG 6305 bearings,original quality,fifty years of cultivation.China's leading distributor.
FANADEbearing's insight:

Rolling bearing performance depends largely on the material performance. Imported bearings with low alloy and high purity usually overwhelm chrome steel and crafting bearing rings and rolling body materials. To withstand the high impact load and alternating bending stress of import bearings, using carburizing steel.
In recent years, due to imported bearing steel quality constantly raise (rise in price, of course), FAG 6305 bearings  http://www.fagbearings-hk.com/product/FAG-6305-bearings-1741.html ;                         make imported bearing capacity increases significantly. Research results and practical experience have proved that today's standard import bearings rolling bearing steel manufacturing, in good lubrication, clean environment and under the condition of load is not big, have infinite fatigue strength can be achieved.
1, bearing radial load
Mainly bear radial load bearing for centripetal bearing. This type of bearing the nominal contact Angle of a0 < = 450. Size of the same roller bearing is larger than the ball bearing can bear radial load.
N and NU type cylindrical roller bearing can bear radial load, other types of centripetal bearing can bear radial load, can also carry axial load.
2, bearing axial load
Mainly bear axial load of bearing, generally for the thrust bearing, its nominal contact corner a0 > 450. Thrust bearing and thrust angular contact ball bearing according to the different structures can take one or two directions at the same time of axial force. When bear particularly high force optimization with thrust cylindrical roller NSK bearings import           http://www.nskbearings-hk.com/ ;          thrust spherical roller bearings.
Thrust spherical roller bearings and one-way thrust angular contact ball bearings can carry axial load and radial load at the same time, other thrust bearing can only carry axial load.
3, the length compensation of the bearings of their own
A shaft bearing usually adopts fixed bearing and floating bearing structure. The winding shaft bearings make compensation for length error and thermal expansion.
NU type and swimming N type cylindrical roller bearings are the ideal bearing, the bearing itself can compensate for length. Bearing inner and outer circle can use a tight fit.
4, the length of the sliding fit compensation
Integral bearing (such as deep groove ball bearing and spherical roller bearing) can also be swimming bearings. This kind of bearing with a use of the two ring, no axial fixed surface. Therefore, bearing a ring can be the supporting surface activity.
5, separable bearing (accuracy)
This is a kind of bearing ring can be installed in a separate, when both ring with tight fit its advantage is very outstanding.
FAG bearings ceramic ball bearings can be completely cover now precision, medium speed above all steel bearing all the applications. FAG bearings imported ceramic bearing performance is much better than the all steel bearings, life is now using the bearing life increased by more than 3 times, can save a lot of down time, reduce scrap, reduce inventory bearing spare parts, etc.
Compared with FAG bearing steel performance, weight bearing steel is 30%, 40%, can reduce some of the load increases because of the centrifugal force and slip. Due to the high wear resistance, rotational speed is 1.3 1.5 times the size of bearing steel, can reduce the channel because of the high speed rotating surface damage. Elastic modulus is 1.5 times higher than that of bearing steel. High stress elastic is small, can decrease due to the load generated by the deformation. Hardness is a FAG bearing steel 1 times, reduce wear and tear. Compressive strength is imported FAG bearing steel 5 to 7 times. Thermal expansion coefficient accounts for less than 20% bearing steel. Friction coefficient is less than 30% bearing steel, can reduce because of the friction heat, can reduce the bearing early spalling failure caused by high temperature, equivalent tensile, bending and metal.
Separable bearings include four-point contact ball bearing, two and a half circle of double row angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, thrust cylindrical roller bearings, thrust spherical roller bearings.
Here is also the introduction of the integral bearing types, a integral bearings: deep groove ball bearings, single row angular contact ball bearings, self-aligning ball bearings, roller bearings and spherical roller bearings.

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The characteristics and application of main shaft bearing oil

The characteristics and application of main shaft bearing oil | fagbearings | Scoop.it
FND Bearings CO.,LTD is specialized in produce FAG 6203 bearings,original quality,fifty years of cultivation.China's leading distributor.
FANADEbearing's insight:

Under normal circumstances, when flange bearings were just lubricated with oil or grease, there will be a natural temperature rise that will last one to two days. Flange bearing stability and performance of the vibration is key to FAG bearings, such as peeling, indentation, rust, crack and wear will be reflected in the vibration measurement, therefore, through the use of special flange bearing flange vibration tester (frequency analyzer, etc.) can measure the size of the vibration,FAG 6203 bearings sale      http://www.fagbearings-hk.com/product/FAG-6203-bearings-1702.html       frequency points cannot deduce the abnormal situation. Measured values for their conditions of use, or sensor installation position is different, so you need to in advance of each machine is analyzed by the measured value of the determined after judgment standard.

1 NSK imported bearings, shaft and chamber of tolerance of choice and control: after the imported bearing pressure should be flexible rotation without blocking. If there are any obvious rotation is not flexible, indicates the size of the shaft is too big, tolerance to downgrade. Such as imported bearing pressure into the shaft by hand after the rotation has obvious "sasha vujacic" feeling, may be the shaft or shaft roundness tolerance is too big. So to control the import of shaft and bearing chamber when the tolerance is to control good roundness, at present many domestic manufacturers to control the tolerance only, not to control the roundness.
2, imported bearing assembly way: because import bearings are high precision products, such as improper assembly is easy diagonal channel contact ball bearing damage, lead to damage of angular contact ball bearing. Angular contact ball bearing in the assembly shall have a dedicated mold, not casually, only when the pressure into the shaft
Can the small circle stress, pressure can force the circle circle. Require the use of pneumatic or hydraulic assembly, lower die when being connected to outside the state level, such as with sloping channel leads to import bearing from mechanical damage, and make the imported bearing guide ring.
3, assembly to prevent foreign body: NSK bearing import when loaded on the rotor to do dynamic balance will be generated when the dynamic balance of iron into easily import bearing internal, so it is best to install before import bearings do dynamic balance. There are some manufacturers in order to convenient assembly, assembly in imported bearing indoor coated with some oil or grease lubrication effect, but usually operators good amount of it is hard to control, if oil or grease on the import bearing indoor storing up more, the imported bearing rotates along axis to the imported bearing inside easily. Imported bearing chamber is best not to apply oil or grease, NSK bearings picture http://www.nskbearings-hk.com if must apply to control shall not be in imported bearing indoor have left.

On the surface of the flange bearing temperature, generally speaking, there are outdoor temperature can be predicted, if using the oil hole can directly measure the flange bearing outer ring temperature, is more appropriate.
Generally, the temperature with flange bearing operation began to slowly rise, 1 to 2 hours to reach a steady state. Flange bearing normal temperature due to the heat capacity of the machine, heat dissipating capacity, rotational speed and load. If the appropriate lubrication, installation department, FAG bearing temperature will rise sharply, appear unusually high temperature, must stop at this moment, take the necessary precautions.
Using thermal device can monitor the bearing temperature at any time, and realize e. automatic alarm when the temperature exceeds or stop to prevent burning high temperature often said bearing is in abnormal situation. High temperature is also harmful to FAG bearing lubricant. Sometimes overheated bearings can be classified to the bearing lubricant. If the bearings are working in more than 125 ℃, they will have a shorter bearing life. The causes of high temperature flange bearings include: lubrication inadequate or excessive lubrication, the lubricant. Contains impurities, the load is too large, the flange ring bearing damage, clearance, high friction and oil seal and so on.
Flange bearing temperature measurement can help make a thermometer on a regular basis, such as digital thermometer, can accurate FAG bearing temperature measurement and display by ℃ or Fahrenheit units. The importance of bearings means that when the damage cause of equipment downtime, so this class should be equipped with best temperature probe.
(1), keep the surrounding of the bearings clean. Even the eyes can't see the little dust, also can bring bad influence to FAG bearings. So, keep the surrounding clean, dust from invading bearing.
(2), Careful operation. In use for bearing strong impact, will produce scar and creasing, become the cause of the accident. Severe cases can crack, fracture, so must pay attention.
(3), using the appropriate operating tools. Avoid to existing tools to replace, must use the appropriate tools.
(4), attention should be paid to FAG bearing corrosion. During operation of the flange bearings, sweat will become the source of rust. Handle the operation with clean hands, and it is best to wear gloves

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Methods of processing bearing failure

Methods of processing bearing failure | fagbearings | Scoop.it
FND Bearings CO.,LTD Is Authorized Supllier Of Fag Bearings.Well Known Because Of Original Quality And Best Price In Fag Bearings In Asia Market.
FANADEbearing's insight:

According to FAG formation mechanism of grinding badness layer of bearings working surface, the main factors influencing the grinding metamorphic layer is a function of grinding and grinding force. The following analysis about FAG bearing failure reason:
1. FAG bearing grinding heat
In FAG bearing grinding, grinding wheel and workpiece contact zone consumes large amounts of energy, so as to produce a large number of grinding heat, local transient high temperature caused in grinding area. Deducted on the basis of the theory of linear motion heat source heat transfer formula,FAG bearings size  http://www.fagbearings-hk.com/ ; calculated by the method of infrared ray and measured experiment under the condition of instantaneous temperature thermocouple, in the grinding zone within 0.1 ~ 0.001 ms instantaneous temperature can be found up to 1000 ~ 1000 ℃. The instantaneous high temperature, amorphous group, high temperature tempering, secondary hardening, and even burn cracking and other changes produce high temperature oxidation down to a certain depth on the surface of the working surface.
(1) oxide layer of the surface
Transient high temperature of the surface of the steel reacts with the oxygen in the air, creating extremely thin (20 ~ 30 nm) iron oxide thin layer. It is worth noting that the oxide layer thickness and surface grinding metamorphic layer is the total thickness test results in corresponding relation. This shows that the thickness of oxide layer, is directly related to the grinding process, an important symbol of grinding quality.
(2) the amorphous layer
Instantaneous high temperature parts in grinding area make the surface molten state when molten metal molecular flow is evenly coated to the work surface, and the matrix metal cooling at breakneck speed, formed a very thin layer of amorphous tissue layers. It has high hardness and toughness, but it is only about 10 nm, it is easy to be removed in the precision grinding processing.
(3) high temperature tempering layer
Transient high temperature can make the surface of the grinding area within a certain depth (10 ~ 100 nm) heated to a temperature higher than tempering heating temperature of workpiece. In the absence of austenitizing temperature reached, with the improvement of heated temperature, the surface will produce one by one and heating temperature corresponding to the organization transformation, or high temperature tempering tempering hardness. The higher the heating temperature and hardness of the decline is more severe.
(4) the hardening layer on the second floor
Instantaneous high temperature heat the workpiece surface layer when the grinding area to the austenitizing temperature (Ac1) above, then the austenitizing layer of tissue in the subsequent cooling process, the quenching into martensite structure anew. Where the secondary hardening burns of workpiece, the second time hardening layer must be under very low temperature tempering hardness layer.
(5) the grinding crack
The secondary hardening burns will make the workpiece surface layer stress changes. Secondary hardening zone is in compression state, the high temperature materials back to the fire area underneath there are the largest tensile stress, this is the place where the most likely to occur crack core. Crack is the most easily spread along the original austenite grain boundary. Serious burns can lead to crack of the grinding surface artifacts scrap (takes the crack).
2. The metamorphic layer formed by the grinding force on the FAG bearing
In the process of grinding, the workpiece surface layer will be grinding wheel cutting force, compression force and friction force. And, in particular, the role of the latter two, make the workpiece surface layer formed directional strong plastic deformation and strain hardening layer. The metamorphic layer is bound to affect the surface residual stress changes.
(1) cold plastic deformation layer
Every moment in the process of grinding, grinding grain is equivalent to a cutting edge. But in many cases, the rake Angle of cutting edge negative, in addition to abrasive cutting action, is to make the surface under compression (plough), make the left obvious plastic deformation of workpiece surface layer. The degree of the deformation layer will increase with as the degree of grinding wheel and grinding feed growing.
(2) Thermoplastic deformation (or high temperature deformation) layer
Grinding heat in the transient temperature of the work surface formation, makes a certain depth of the workpiece surface layer elastic limit fell sharply, even to the point of elastic disappear. The work surface on the grinding force, especially under the action of compression force and friction force, caused by free stretch, subject to the conditions of the matrix metal, the surface is compressed (plough), caused a plastic deformation in the surface layer. High temperature plastic deformation under the condition of the grinding process is constant, with the temperature increasing of workpiece surface.
(3) the hardening working layer
Sometimes use micro hardness and metallographic method can be found that caused by the machining deformation of surface hardness.
In addition to grinding machining, casting and heat treatment heating caused by the surface decarburized layer, if again later processing has not been completely removed, residual on the workpiece surface will cause surface softening metamorphism, result of bearing early fa

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Good imported bearing about it

Good imported bearing about it | fagbearings | Scoop.it
FND Bearings CO.,LTD is specialized in produce FAG 6202 bearings,original quality,fifty years of cultivation.China's leading distributor.
FANADEbearing's insight:

Rolling bearing performance depends largely on the material performance. Imported bearings with low alloy and high purity usually overwhelm chrome steel and crafting bearing rings and rolling body materials. To withstand the high impact load and alternating bending stress of import FAG 6202 bearings picture     http://www.fagbearings-hk.com/product/FAG-6202-bearings-1701.html  ;     steel.
In recent years, due to imported bearing steel quality constantly raise (rise in price, of course), make imported bearing capacity increases significantly. Research results and practical experience have proved that today's standard import bearings rolling bearing steel manufacturing, in good lubrication, clean environment and under the condition of load is not big, have infinite fatigue strength can be achieved.
1, bearing radial load
Mainly bear radial load bearing for centripetal bearing. This type of bearing the nominal contact Angle of a0 < = 450. Size of the same roller bearing is larger than the ball bearing can bear radial load.
N and NU type cylindrical roller bearing can bear radial load, other types of centripetal bearing can bear radial load, can also carry axial load.
2, bearing axial load
Mainly bear axial load of bearing, generally for the thrust bearing, its nominal contact corner a0 > 450. Thrust bearing and thrust angular contact ball bearing according to the different structures can take one or two directions at the same time of axial force. When bear particularly high force optimization with thrust cylindrical roller bearings, thrust spherical roller bearings.
Thrust spherical roller bearings and one-way thrust angular contact ball bearings can carry axial load and radial load at the same time, other thrust bearing can only carry axial load.
3, the length compensation of the bearings of their own
A shaft bearing usually adopts fixed bearing and floating bearing structure. The winding shaft bearings make compensation for length error and thermal expansion.
NU type and swimming N type cylindrical roller bearings are the ideal bearing, the bearing itself can compensate for length. Bearing inner and outer circle can use a tight fit.
4, the length of the sliding fit compensation
Integral bearing (such as deep groove ball bearing and spherical roller bearing) can also be swimming bearings. This kind of bearing with a use of the two ring, no axial fixed surface. Therefore, bearing a ring can be the supporting surface activity.
5, separable bearing (accuracy)
This is a kind of bearing ring can be installed in a separate, when both ring with tight fit its advantage is very outstanding.
FAG bearings ceramic ball bearings can be completely cover now precision, medium speed above all steel bearing all the applications. FAG bearings imported ceramic bearing performance is much better than the all steel bearings, life is now using the bearing life increased by more than 3 times, can save a lot of down time, reduce scrap, reduce inventory bearing spare parts, etc.
Compared with FAG bearing steel performance, weight bearing steel is 30%, 40%, can reduce some of the load increases because of the centrifugal force and slip. Due to the high wear resistance, rotational speed is 1.3 1.5 times the size of bearing steel, can reduce the channel because of the high speed rotating surface damage. Elastic modulus is 1.5 times higher than that of bearing steel. High stress elastic is small, can decrease due to the load generated by the deformation. Hardness is a FAG bearing steel 1 times, reduce wear and tear. Compressive strength is imported FAG bearing steel 5 to 7 times. Thermal expansion coefficient accounts for less than 20% bearing steel. Friction coefficient is less than 30% bearing steel, can reduce because of the friction heat, can reduce the bearing early spalling failure caused by high temperature, equivalent tensile, bending and metal.
Separable bearings include four-point contact ball bearing, two and a half circle of double row angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, thrust ball bearings, thrust cylindrical roller bearings, thrust spherical roller bearings.
Here is also the introduction of the integral bearing types, a integral bearings: deep groove ball bearings, single row angular contact ball bearings, self-aligning ball bearings, roller bearings and spherical roller bearings.

 

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