Bearing Manufacturers are equipped with their own performance

The actual performance of the Bearing manufacturer are fitted with the bearing not only its own performance, but also on the bearing is closely related to the specific installation conditions, therefore, to the bearing is installed with the form, fit the neutral center study, the actual use of the Dental bearing in able to get better performance.

Ceramic Ball Bearings with high temperature resistance

Ceramic Ball Bearings with high temperature resistance, wear resistance, corrosion resistance, no mercy, electrical insulation, self-lubricating, high-speed and other features. Can be used in extremely harsh environments and special conditions, can be widely used in aviation, aerospace, marine, petroleum, chemical, automotive, electronics, metallurgy, electric power, textile, pumps, medical equipment, scientific research and national defense and military fields, is the application of new materials, high-tech products; Cylindrical roller bearing  nd rolling silicon nitride (SI3N4) or zirconia ceramic materials, maintaining PTFE, nylon 66, polyimide, stainless steel or special aviation aluminum, thus expanding the application of ceramic bearing surfaces. Such as: high-speed bearings, high temperature bearings, corrosion-resistant bearings, magnetic bearings, electrical insulation bearings. Is internationally recognized as the future of the mainstream products bearing, bearing market will occupy 40 to 60 percent share. Recent market of 10 billion, mainly used in high-speed machine tools, high-speed motor, cryogenic equipment, the current development and production of precision can be gradually replaced, the speed above all bearing in all applications.

For some high-precision bearings

You need higher speeds (ie, high-speed machining centers or internal grinding), you need to find a different bearing solutions.
For some high precision bearing, its clutch bearing  requirements is very high, today we have to introduce a configuration problem on precision bearings.
Precision bearings spindle traditional application areas, according to different processes, machine tool spindle have different requirements. In general, the lathe spindle is used at lower speeds and larger cutting metal cutting load. This type of spindle are usually transmitted through the pulley or gear drive torque. This means that the load on the drive end shaft is quite large.

Precision bearings Definition

Precision bearing Precision bearings according to ISO grading standards are divided into: P0, P6, P5, P4, P2. Successively higher level, where P0 is the general accuracy, other grades are precision level. Of course, different classification standards, different types of bearings, their classification method somewhat different, but the meaning is to the. The use of performance requirements of precision bearings rotating body with high runout accuracy, High speed Spindle and small changes in friction and friction.

Roundness error and there are four main methods.

roundness measurement error and there are four main methods.
① minimum zone method: the outline of an inclusive circle radius difference measured radius of the smallest difference of two concentric circles as roundness error.
② method of least squares the circle: circular contour corresponding to the measured points to the square of the distance and the circumference of the smallest circle center of a circle, made inclusive measured radius of two concentric circular contour difference is the roundness error.
③ Minimum circumcircle method: apply only to the outer. Inclusive test circle contour and a minimum radius of circumcircle center of a circle, a circle made inclusive measured two concentric contour radius difference is roundness error.
④ maximum inscribed circle method: apply only to the inner circle. Connected to the test within a radius of two concentric circular contour and circular contour difference between the measured radius of the largest inscribed circle center of a circle, simulation testing the roundness error is made inclusive.

double row and multi- sleeve bearing

Thrust needle roller bearings
Separated by a Precision bearing  raceway ring and needle roller and cage components , (WS) can be used with any combination punching thin raceway ring (W) or processing of thick -cut raceway ring . Non-separable bearings are precision stamping by a raceway ring and needle roller and cage assemblies maintain overall bearing constituted . This class can withstand axial load bearing . Small footprint , compact design in favor of mechanical , they use only the needle roller and cage assemblies , and the Bearing test machine mounting surface of the shaft and housing to use as a raceway .
The basic structure of the bearing inner ring with the NU -type cylindrical roller bearings the same , but because of the use of the needle , the volume can be reduced , and can withstand high radial load bearing without inner ring should have a suitable mounting surface accuracy and hardness of the shaft as raceway use .

insert ball bearing than other plain bearing is also characterized by double-sealed

insert ball bearing than other plain bearing is also characterized by double-sealed, because the use of environmental conditions are generally spherical ball bearings more demanding, especially agricultural machinery bearings even more, and double sealed to ensure that the dust is not easy to enter its channel interior the last two years, some companies have developed triple-lip seal of the spherical railway bearing dust will greatly enhance the ability to extend bearing life.

Bearing Accuracy Improvement Method

precision bearing After the bearing is installed in the host, as measured radially spindle runout, measured values can be found in each of its turn has some changes; continuous measurements can be found after after a certain number of revolutions, this change will be approximately repeated appears. This change in the index to measure the degree of circular rotation accuracy, approximately repeated changes in the number of revolutions required for precision rotation cycle on behalf of the "quasi-periodic", the magnitude of change in the quasi-periodic large amplitude, rotation accuracy is poor circulation .
If properly pre-load on the spindle, the speed gradually increased to close to the operating speed,Roller Bearings in order to implement "running" the role of bearing can improve the accuracy of the spindle rotation cycle.

In order to ensure the bearing after installation without excessive deformation, must be

In order to ensure the bearing after installation without excessive deformation, must be:
(1) The roundness of the shaft and housing bore and the shoulder block verticality precision bearing in accordance to the respective requirements.
(2) it is necessary to accurately calculate the amount of interference with the rotating rings, but also accurately calculate the appropriate amount of fixed ferrule.
Rotatable collar burning interference to the extent possible should also get smaller. As long as the effects of thermal expansion and ensure the operating temperature, and maximum speed under the influence of centrifugal force, so as not to cause a tight fit creeping or sliding surfaces. The fixed ring according to the work load size and bearing size, choose small clearance fit or interference fit, too loose or too tight is not conducive to maintaining the original precise shape.
(3) bearing as running at high speed, and high operating temperatures, special attention should be rotating rings can not be too loose, in order to prevent the emergence with eccentric, and a gap can not be fixed ferrule to prevent ferrule deform under load and vibration excitation.
(4) Effect of fixed ring take a small interference fit with the proviso that both sides have a high mating surface shape accuracy and less roughness, or cause installation difficulties disassembly harder, in addition, also we need to consider the thermal elongation of the spindle .
(5) pairs of double angular contact ball bearing spindle, most of the load is light, the blending amount of interference, such as too large, then its internal axial preload amount will be significantly larger, resulting in adverse effects. Use double row cylindrical roller bearings and tapered roller bearings Spindle spindle, its load is relatively large, so its interference with relatively large.

One way bearing is free to rotate in one direction

One way bearing is free to rotate in one direction, while in the other direction to lock a bearing. Also known as the one-way clutch bearing, but according to different industries, the role of different named. One-way bearing metal housing, the roller containing a number, needle or ball, and the rolling seat (hole) in the shape that it can only scroll in one direction, while in the other direction will have a lot of resistance (The so-called "one-way").
One-way bearing powder metallurgy molding and sintering of metal powder (or mixture of metal powder and nonmetal powder) is made of technology products.Slewing bearing On the basis of research and technological changes characteristic properties of the powder on the use of appropriate technical process, change the shape, performance, and their organizational structure of the powder and become adapted to different needs of bearing products.

Air bearings are designed to meet the specific application requirements of the aviation industry.

Timken's standard configuration aviation bearing, designed to meet the specific application requirements of the aviation industry. Most aviation company bearing 52100 steel vacuum melting or double vacuum melting (VIM-VAR) of M-50 steel, in line with ABEC / RBEC 5 bearing level requirements, high strength machined cage. railway bearing, specializing in the supply of railway, motor car, the train used above.
By the following design criteria for assessing the chart, you can find the best design for your specific application. Single design may not meet all the required services, but to make the right choices for each application in most of the important features or conditions are met. The following chart compares the design to make a comparative assessment.

Rolling mill bearing, means for rolling industry

SKF super-precision bearing can help OEMs and end users to further optimize performance parameters of their equipment and applications. Depending on the bearing series and applications, its advantages are also varies, but always including high-speed and carrying capacity, bearing a long service life, long maintenance intervals, low energy consumption.
Rolling mill bearing, means for rolling industry, namely non-ferrous metals, ferrous metals and non-metallic products rolling. For bearing the roll diameter at the calender rolls and rollers. Usually four cylindrical roller bearings under radial load, thrust roller or thrust ball bearings and angular contact ball radial or radial roller bearing axial load. Now they use or the way mist lubrication oil lubrication and grease for lubrication cooling.

Machine tools and other applications requiring high precision bearings with excellent performance.

Machine tools and other applications requiring high precision bearings with excellent performance. Wide range of speed capability, maintaining high rotation accuracy, high system rigidity, low heat generation, low noise, low vibration level, but some of the many requirements.
Rolling general industrial applications can only meet part of the requirements. Therefore, SKF manufacturing a full line of super-precision bearing.
SKF super-precision bearings can help OEMs and end users to further optimize performance parameters of their equipment and applications. Depending on the bearing series and applications, its advantages are also varies, but always including high-speed and carrying capacity, bearing a long service life, long maintenance intervals, low energy consumption.
Slewing bearing is nearly four decades the gradual rise in the world of new mechanical parts, which have inner and outer rings, rolling, etc., at present, our stereotypes production of slewing bearings, mainly in the early 1980s designated by the Ministry of Machinery Industry Tianjin Engineering Machinery Institute organized introduction of the original Federal Republic of Germany Rothe Erde company's design and manufacturing technology.

ZYS clutch bearing damage causes

ZYS clutch bearing operation and maintenance of bearing damage and the driver to adjust a great relationship, damage generally have the following reasons:
1) Operating temperature is too high overheating
Many drivers cornering or deceleration, often half-pedal ZYS clutch bearing, some hanging files also on the back foot Bearing test machine pedal; some vehicles free stroke adjustment is too large, making the ZYS clutch bearing is not complete, in a semi-engaged semi-isolated state, this state Dry friction caused by a large amount of heat transfer to the bearings, bearing the heat reaches a certain temperature, melt butter or diluted flow, so that the release bearing temperature is further increased when the temperature reaches a certain level will be burned.
2) lack of lubrication and wear
Bearing life testing machine release bearing grease lubrication, there are two methods added butter, for 360,111 bearings, it should be removed or transmission, open the back cover of the bearing grease fill during maintenance, and then re-install the cover close to; for 788611K bearings, it may remove it in the melted grease digesting, removed after cooling, can achieve the purpose of lubrication. In practice this is easy to overlook the driver, causing the ZYS clutch bearing release bearing short of oil. Separation of wear of the bearing lubrication or less in the absence of lubrication is often lubricated amount of wear several times to several times. Wear increases, the temperature will be greatly improved, so more damage.
3) free travel is too small or too many times by the load
Upon request, the general ZYS clutch bearing release bearing and the separation gap between the lever is 2.5mm more appropriate to reflect on the ZYS clutch bearing pedal free travel is 30-40mm, free travel is too small or no freedom of travel, and will make the separation lever release bearing is normally engaged state. According to the principle of fatigue damage, bearing work longer, the damage more serious; the more times by the carrier, the more easily separated bearing fatigue damage. And the longer working hours, the higher the temperature of the bearing, the easier burning, reducing the separation of bearing life.
4) In addition to the above three reasons, the separation lever is adjusted to smooth out bearing return sp

ZYS clutch bearing Caution

1) In accordance with operational requirements, to avoid half-engaged ZYS clutch bearing semi-isolated state, reduce the frequency of use of the bearing measurement
2) pay attention to maintenance, or when a regular annual maintenance in vetting, by cooking method make butter soaked it with ample lubricant.
3) Note leveling ZYS clutch bearing lever return spring force to ensure compliance.
4) Adjust the free travel, it meets the requirements (30-40mm), to prevent the free travel is too large or too small.
5) Minimize engagement separation times, reduce the impact load.
6) Cross roller bearings light step, easy to engage smoothly and separation.

ZYS clutch bearing action

ZYS clutch bearing  installed between the ZYS clutch bearing and the gearbox, separate loose sleevesealed angular contact ball bearings on the transmission of the first axis of the tubular extension of the bearing caps, by the return spring to release bearing shoulder always against the release fork, and retreat to the final position maintain the separation lever ends (separation means) about 3 ~ 4mm gap.
The ZYS clutch bearing pressure plate, release lever and the engine crankshaft synchronous operation, and the separation ZYS clutch bearing fork can move axially along the output shaft, with the release fork to direct dial release lever is clearly not enough, by separating the bearing can release lever while rotating an edge ZYS clutch bearing output shaft axial movement, thus ensuring the smooth Super precision ball bearings to engage, separation soft, reduce wear and extend ZYS clutch bearing life and the entire drivetrain.

ZYS clutch bearing Failure

(1) Free travel by excessive load is too small or the number. According to the requirements, generally ZYS clutch bearing gap between the Bearing manufacturing machine and the separation lever is 2.5mm more appropriate, is reflected in the free travel of the ZYS clutch bearing pedal 30 ~ 40mm, free travel is too small or no free travel, will make the separation with the separation lever Bearing in a normally engaged state. According to the principle of fatigue damage, bearing work longer, the more severe the damage; the more times by the carrier, the more easily separated bearing fatigue damage. And the longer working hours, the higher the temperature of the bearing, the easier burning, reduce the service life of bearings.

(2) whether the separation was smooth adjustment lever and release fork is deformed, release bearing measurement return spring is good, but also have a significant impact on the release bearing damage. Separated uneven, release fork deformation, release bearing spring does not return, will result in the ZYS clutch bearing release bearing against the work, the separated bearing condition is always in work, higher and higher temperatures, burn easily bearings, lower bearings life.

ZYS clutch bearing Failure

(1) excessive operating temperatures result in overheating. Many drivers cornering or deceleration, often half-pedal ZYS clutch bearing, and some also on the back foot in gear ZYS clutch bearing pedal; some vehicles free stroke adjustment is too large, making the ZYS clutch bearing is not complete, in a semi-engaged, semi-isolated state, this Status cause friction generated between sliding friction plate and flywheel, a large amount of heat transfer to the Wind turbine bearing, bearing the heat reaches a certain temperature, melting grease or diluted flow, so that the release bearing temperature is further increased when the temperature reaches a certain level will burn bad bearings.

(2) the lack of grease and abrasion. super precision bearings  lubricated with grease. In practice repairman Neglected release bearing lubrication problems, not the release bearing lubrication during installation, leading to ZYS clutch bearing release bearing short of oil. No lubrication or less the amount of wear lubricating bearings are often lubricated bearings several times to several times. Wear increases, the temperature will increase a lot, so more damage bearings. So in the repair process, the installation of the ZYS clutch bearing release bearing lubrication to be checked, timely lubrication maintenance.

ZYS clutch bearing Works

Automobile Dental bearing release bearings are a more important part, if not faulty maintenance, will not only cause economic loss, but also dismantling a rather cumbersome, need to spend a lot of man-hours. So, find out the ZYS clutch bearing release bearing cage failure cause and reasonable care and maintenance in use, to extend the life of bearings, improve labor productivity, achieve better economic efficiency are important. When the ZYS clutch bearing release bearing work, the ZYS clutch bearing pedal force will be transmitted to the ZYS clutch bearing release bearings.  ZYS clutch bearing pressure plate toward the center, so that the pressure plate is pushed away from the ZYS clutch bearing, the ZYS clutch bearing plate and flywheel separation. When the ZYS clutch bearing pedal is released, the pressure plate before the spring pressure will push the pressure within the disc, press the ZYS clutch bearing, the ZYS clutch bearing plate and ZYS clutch bearing  separation, and complete a cycle.

Rolling structure

Common Rolling generally consists of two rings (ie, inner, outer), the basic element rolling elements and cage and other components. Usually the inner ring and the journal mate and rotate with the shaft, the outer ring mounted in a rack of the high speed bearing hole stationary. When the inner and outer ring relative rotation, rolling into account, the outer ring raceway, the rolling body cage uniform distribution and to avoid contact between the adjacent rolling elements and friction, and wear.
Inner and outer rings and rolling elements of rolling bearings generally use a dedicated rolling bearing steel, such as GCr9, GCr15, GCr15SiMn etc. retainer is used softer materials such as carbon steel plate by stamping, or copper alloy, plastic and other system to make.

Rolling the type selection

When you select the type of rolling bearings, bearing the working load should be considered (size, nature, direction), speed and other requirements.
1) The speed is high, the load is small, the requirements should be selected when the ball bearing high precision rotation; low speed, load impact load is large or the selection of roller bearings.
2) the bearing by both radial and axial load, generally used in the angular contact ball bearings or tapered roller bearings; if a large radial load, axial load is small, can use deep groove ball bearings; and when the axial load large radial load hours, can be thrust angular contact ball bearings, four row cylindrical roller bearing or a combination of structural choose thrust ball bearings and deep groove ball bearing.
3) When all kinds of bearings, the tilt angle between the outer ring should be controlled within the allowable angle of deflection value, otherwise it will increase the additional load bearing and reduce life expectancy.
4) the larger shaft stiffness requirements, should use double row ball bearings, roller bearings or four-point contact ball bearings, the load is large or larger impact force may be employed on the same point double column or row roller bearings . Bearing system rigidity and high rotational accuracy can be increased shaft, reducing noise and vibration.
5) For ease of installation and removal, and adjusting the gap often used in inner and outer rings separable separation of bearings (such as tapered roller bearings, four row cylindrical roller bearings).

hybrid bearings Precautions

Hybrid Hybrid bearings are sliding bearings in one, it is to work in a fluid state energy lubricated plain bearings, while static Hybrid bearings can operate under hydrostatic lubrication and hydrodynamic lubrication. When we pressed hybrid bearings in the movement need to pay attention to the following six things, prevent static journal bearing failure during use.
1, the normal use should be replaced 2 # spindle oil and coarse and fine filter after one year.
2, be sure to join the three-layer silk cloth filter during normal use pumping stations to add oil.
3, spindle pulley, wheel loading and unloading must be carried out in the state of the pumping station work. That spindle under hydrostatic oil floating state. This does not damage the spindle and Hybrid Bearing manufacturers.
4, the front wheel spindle work and grinding hydrostatic pressure pumping observation is within specification range.
5, when the device is shut down, it must first stopped grinding motor, until wheel stop, then turn off the pump station, or easy to damage the grinding head.
6, for any component on the pumping station, be sure to remove the high-pressure inlet hose fittings, complete replacement parts, oil self circulation 15-20 minutes before the inlet pipe connected to the grinding head, thus ensuring into the grinding spindle oil is filtered through fine super clean spindle oil. This can prolong the life of the hybrid spindle.

Precision angular contact ball bearings

In the several bearings to precision angular contact ball bearings most widely used. We all know that angular contact ball bearing rolling body is ball; because it is a point contact (as opposed to line contact roller bearings), so it can provide higher speeds, less heat and higher rotational accuracy. In some super-high-speed spindle applications, but also the use of ceramic balls (typically Si3N4 or Al2O3) hybrid bearings. Compared with the traditional full hardenability ball, ceramic ball material itself characteristic gives ceramic ball bearings with high stiffness, high speed, high temperature, long life, to meet customer demand for high-end products bearing the machine.
On angular contact ball bearing contact angle, the more popular 15 and 25 of the contact angle;???? 15, the contact angle is usually a relatively high speed performance, while 25 of the contact angle with high axial carrying capacity. Due to the impact of the choice of pre-loaded precision angular contact ball bearing applications is very large, for example, in high load, high rigidity of the occasion, the general will choose medium or heavy Bearing manufacturing machine preload; and for some high-speed, high-precision applications We in the early selection of the bearing, need to pay attention to choose the right pre-load, general light preload more common. Preload generally divided into light, medium and heavy three; in order to facilitate the customer's use, now several major bearing manufacturer in the world are generally available previously ground bearing end faces plus preloaded bearing, which is what we usually refer to the universal matching precision angular contact ball bearings form. This kind of Wind turbine bearing preload adjustment eliminates the customers, thus saving installation time.

Advantages of single ball bearings

Advantages of single ball bearings


(1 Ball+1 sleeve a single ball bearing is the improvement of traditional oil bearing, sliding friction and rolling friction mixed, in fact, Slewing bearing is to use a ball bearing paired with an oily bearings to reduce the cost of double ball bearing, it between the rotor and the stator with ball for lubrication, and with lubricating oil. It overcomes the problem that the life of the oil bearing is short, the operation is unstable, and the cost is very limited.

Single ball bearing to absorb oil bearing and double ball bearing has the advantages and the bearing service life of up to 40000 hours, the disadvantage is in after entering into the ball, and the running noise is increased, insert ball bearing but still less than the double ball bearing.

The leading figures of special bearing design and precision processing technology

Presided over a number of provincial scientific and technological projects and the state standards, radial clearance ,provincial and ministerial level scientific and technological progress award a third prize 3, the municipal science and technology progress, fatigue testing machine ,each two second prize, a number of technical innovations included provincial scientific and technological achievements, won 7 national invention patent.

Bearing manufacturers and oil bearing

Major radiator bearing manufacturers in bearings with the launch of the new technology in recent years, such as magnetic bearing, fluid protection system bearings, hydraulic bearings, rifle bearing, nano ceramic bearing are also on the above the basic form of bearings improved, basic working principle is no change.

Oil bearing sleeve bearing is to use sliding sleeve bearings, Thin section bearing using oil as a lubricant and drag reduction agent, the initial use of operation low noise, low manufacture cost, but the bearing wear serious, life is ball bearing has a big gap.

And the bearing use time, due to the oil seal (computer radiator products can not use high-grade oil seal, in general, is ordinary oil paper), lubricating oil will gradually volatile, sealed angular contact ball bearing and dust will be entering the bearing, causing the fan speed slows down and increase the noise problems, serious but also because of bearing wear caused by severe vibration caused by eccentric fan. These phenomena, either open or seal gas, only buy new fan out.

The world's 8 largest bearing manufacturers catalogue

The world's 8 largest bearing manufacturers catalogue

1, SKF bearing
2, INA bearing
3, NSK bearing
4, FAG bearing
5, NTN bearing
6, IKO bearing
7, KOYO bearing
8, TIMKEN bearing

10 domestic bearing manufacturers,Slewing bearing

1, Luoyang LYC Bearing Co. Ltd
2, Wafangdian City bearing Refco Group Ltd
3, Harbin Bearing Co. Ltd.
4, wanxiangqianchao Limited by Share Ltd
5, the Group Co. Ltd.
6, Zhejiang Tianma bearing Limited by Share Ltd
7, northwest bearing Limited by Share Ltd
8, Xiangyang automobile bearing Limited by Share Ltd
9, Fujian Longxi bearing (Group) Limited by Share Ltd
10, Jinxi axle Limited by Share Ltd

Bearing Manufacturing industry wonderful work

Comrade Wang Bing in 1982 to participate in work, have worked at the former Ministry of Machinery Industry, Luoyang Bearing Research Institute, Zhongshan bearing plant, TCB

Bearing Manufacturing Co., Ltd., served as engineers, technicians, Director, Technology Department, Thin section bearing ,Technical Center, Chief Engineer .

1996 won the Ten Outstanding Youth Science and Technology of Guangdong Province pacesetter" title in 2004, was elected Communist Party of China in Zhongshan City, on behalf of the Eleventh Congress, in 2009 was approved as China Bearing Industry Technology experts, bearing manufacturers has been awarded Excellent Zhongshan Women Scientists , Zhongshan City, outstanding communist , in 2014 was elected National Machinery Industry labor model, theZhongshan outstanding experts · talent title.

She has long been engaged special special bearing design and precision processing technology and unique achievements,high speed bearing , more technical level to solve the military and civilian bearing design, manufacture and technical problems.

Precision bearings industry will usher in a new round of development opportunities

At present, China's secret bearing market environment is changing, industry development policy environment is changing, bearing manufacturers the previous government used to promote the development of the use of incentives, and now it is by comprehensively deepen reforms to seek a new impetus for economic development.

For the transformation and upgrading of enterprises, more accustomed to in the past, driven by administrative means, High speed Spindle but now more Forced by market forces.

Similarly, in the product technology and industrial scale, China's secret bearing industry has made great breakthrough. In the process of development of precision bearing industry, our market has been mainly adhere to the innovation and development, angular contact thrust ball bearing strengthen technical exchanges between the developed countries, greatly enhance the strength of precision bearings industry, enhance the market competitiveness of products. Public Wyatt emerged as precision bearings so influential at home and abroad in the precision bearings brand.

ZYS clutch bearing

When the clutch release bearing work, the clutch pedal force will be transmitted to the clutch release bearing. Clutch pressure plate clutch bearing toward the center,durability tester ,so that the pressure plate is pushed away from the clutch, the clutch plate and flywheel separation.

When the clutch pedal is released, before the spring pressure within the pressure plate pressure plate will push,Slewing bearing ,press the clutch, the clutch plate and clutch bearing separation, and the completion of a work cycle.

The basic model consists of a deep groove ball

The basic model consists of a deep groove ball angular contact ball bearing outer ring, an inner ring, a set of balls and a group holding structure into. Deep groove ball bearing type has two kinds of single and double row deep groove ball structure also points sealed and open two structures, open means without turbocharger bearings seal structure, sealed deep groove ball into the dust seal and oil seal. Dust sealing cap material is steel stamping.
When the only radial load, the contact angle is zero. When the deep groove ball bearings with a larger radial clearance, with angular contact bearings can bear large axial load, the friction coefficient is small deep groove ball bearings, the speed limit is also high.
Shielded deep groove ball High speed Spindle with rubber ring of deep groove ball bearings with snap groove deep groove ball bearings, have installed ball gap large load capacity of deep groove ball bearings, double row deep groove ball bearings.

High-speed motors have broad application prospects in the following areas:

High-speed motors have broad application prospects in the following areas:
(1) high-speed motor to be applied in a variety of occasions, air conditioner or refrigerator centrifugal compressor, etc., and with the development of science and technology, more and more specific requirements, its application will be more extensive.
(2) With the development of automotive hybrid cars, small size, light weight, high-speed generator will get full attention, and has a good prospect in the field of hybrid vehicles, aviation, shipbuilding and so on.
(3) high-speed gas turbine generator driven by a small volume, with high mobility, can be used in a number of important facilities, standby power, but also as an independent Bearing manufacturing machine supply or small power stations to make up for lack of centralized power, and has important practical value .

Common spindle bearings have grease lubrication

Common spindle bearings have grease lubrication, oil mist lubrication, oil lubrication, lubrication and ring jet lubrication and so on.
Grease lubrication without any equipment, lubrication method commonly used in low-speed spindle. dn value of the spindle at 1.0 × 106 or more, use more oil lubrication methods.
Oil mist lubrication is a lubricating oil (such as turbine oil) after pressure air atomizing for railway bearing lubrication. This way to achieve easy, simple equipment, oil mist lubrication function of both, but also play a role in cooling the bearing, but mist difficult recovery, serious environmental pollution, it is gradually being replaced by new oil and gas lubrication.
Oil lubrication is not a small amount of lubricant is atomized by compressed air directly timing, quantitative uniform bearing lubrication area was brought to a dedicated oil and gas pipelines along the wall. Lubricating oil lubrication role, and compressed air to propel the movement and cooling lubricants bearing role. Oil is always in the disengaged state, which facilitates oil recovery, while the environment is not polluted. The implementation of oil lubrication, generally requires that each has a separate oil and gas bearing nozzles to spray at the position of the Deep groove ball bearing, there are strict requirements, otherwise difficult to ensure lubrication, oil lubrication effect is also affected air traffic and oil and gas pressure. Generally speaking, the air flow can be increased to improve the cooling effect, and improve oil and gas pressure, not only can improve the cooling effect, but also contribute to the lubricating oil to reach the lubrication zone, and therefore, to improve the oil and gas pressure helps to improve the speed of the bearing.

Common spindle speed dn value

Common spindle speed dn value (dn value is the average diameter of the spindle radial clearance (mm) and the limit speed (r / min) the product of the spindle) to measure the speed spindle often refers to the value of the spindle dn 1.0 × 106 or more. With the development of bearing technology, lubrication technology, the spindle speed to improve year by year. The data show that in the 1980s, spindle bearing grease lubrication dn values ​​under conditions of maximum reach 0.5 × 106, but after the oil lubrication device developed, dn values ​​rapidly increased to 1.0 × 106, using angular contact ceramic ball bearings after, dn value of the spindle bearings further increased to 2.0 × 106.

High-speed machining technology more and more people's attention

High-speed fatigue testing machine technology more and more people's attention, it is not only for greater productivity, but also get high processing quality, and reduce production costs, and thus is considered to be the 21st century's most promising advanced manufacturing technology one.
In the advanced industrial countries, this technology has been widely used in aviation, aerospace and die industries. In the past five years, the technology of our country has made considerable progress. Is a prerequisite for high-speed cutting,
High-speed machine tools and virtual axis machine tools are groundbreaking major change. Whether ordinary or virtual axis CNC machine tools, a key component to achieve high-speed spindle unit remains.

Everything is not perfect

Everything is not perfect, roughness measuring instrument also has some disadvantages. For example, the equipment is more complex, requires a relatively high cost of inputs, the sensor components (induction loop) poor interchangeability and adaptability, not in some complex shape of the workpiece applications.
Although there are some shortcomings, but it's comprehensive index is good, obvious advantages outweighed the disadvantages. Therefore, induction heating is a major process of metal machining. Is to replace coal heating, ideal for heating the oil heating, gas heating and electric heating, electric oven heating, etc.

Induction heaters

Induction heaters, induction heating precision bearing supply selection generally requires the following parameters:
First: the shape of the workpiece is heated, the external dimensions, the weight of the workpiece is heated.
Second: the workpiece material is heated (usually induction heating, only positive for non-metallic conductors like metal conductors such as graphite).
Third: the heating of the workpiece is the desired target temperature, time, and the target temperature.
Once the above three points clear, you can make the selection of induction heating equipment including matching power.

Also known as induction heating power induction heater

Also known as induction heating power induction heater, also known as induction heating equipment, all collectively work piece is heated both involve induction heating include: induction heating power supplies, induction heating equipment, bearing heater, mechanical spindle induction heater, including industrial after preheating induction heating power supply piping hot, Evaporation, copper brazing used, the basic working principle is to use alternating current generates an alternating magnetic field, the alternating magnetic field which is generated inside the metal conductor eddy (eddy current), heat rapidly so that the metal of the workpiece, in general, the heating effect, there is a frequency, a current, a magnetic field joint decision.
In induction heating, the temperature rise of the workpiece to be heated is a metal part, there will be induced heat the heater itself, most of the work to be induced through the use of cooling water to cool the heated portion of the workpiece is not a non-metallic heat .
All metal parts can be used induction heater to heat, such as cast iron, electrical short-circuit ring, car wheels, metal bars, pipes, bolts, screws large turbine, wind power blades slice,durability tester, gears, pulleys, couplings, etc. .

Magnetic bearings due to expensive

Magnetic bearings due to expensive, complex control system, the heating problem is difficult to solve, and therefore can not promote the use of the high-speed spindle unit.
Water-based hydrostatic super-precision bearing is currently the more popular research topic, it is the use of water has a large heat capacity, bearing temperature rise is small features, a partial solution to the ordinary move, hydrostatic bearing fever serious problems, mainly used in low-speed heavy-duty applications.
Air hybrid bearing radial stiffness and a low-impact, but high-speed performance, generally used in ultra-high speed, light load, the precision spindle.
Angular contact ball Slewing bearing dn value in 2.0 × 106 following the application of a high-speed spindle unit, whether it is the speed limit, all aspects of carrying capacity, rigidity, precision can satisfy the requirements and have been standardized, inexpensive,
Angular contact ball bearings but also through the following methods to improve performance.

Also known as induction heating power induction heater

Also known as induction heating Cross roller bearing induction heater, also known as induction heating equipment, all collectively work piece is heated both involve induction heating include: induction heating power supplies, induction heating equipment, bearing heater, bearing induction heater, including industrial after preheating induction heating power supply piping hot, Evaporation, copper brazing used, the basic working principle is to use alternating current generates an alternating magnetic field, the alternating magnetic field which is generated inside the metal conductor eddy (eddy current), heat rapidly so that the metal of the workpiece, in general, the heating effect, there is a frequency, a current, a magnetic field joint decision.
In induction heating, the temperature rise of the workpiece to be heated is a metal part, there will be induced heat the heater itself, most of the work to be induced through the use of cooling water to cool the heated portion of the workpiece is not a non-metallic heat .
All metal parts can be used induction heater to heat, such as cast iron, electrical short-circuit ring, car wheels, metal bars, pipes, bolts, screws large turbine, wind power blades slice, journal bearing, gears, pulleys, couplings, etc. .

Also known as surface roughness roughness

Also known as surface roughness sealed angular contact ball bearing, surface finish instrument, surface roughness tester, roughness tester, roughness tester, roughness tester, and other names, the first overseas R & D and later introduced the country. When the roughness of the surface roughness measurement, the sensor on the measured surface of the workpiece, driven by the drive mechanism inside the instrument sensors do constant glide along the surface to be measured, the sensor through the built-in stylus feel sharp measured surface roughness degrees, then the measured surface roughness of the workpiece caused by a displacement of the stylus, the amount of displacement of the inductance of the sensor coil changes the inductance, the measured surface roughness to generate an analog signal proportional to the output of the phase-sensitive rectifier, after the signal is amplified and level conversion into the data acquisition system.

Double row angular contact ball bearings can withstand the same time

Double row angular contact ball bearings can withstand the same time characterized by joint load radial and axial load, limiting the axial displacement of both axes. Compared with the two-way thrust ball bearings, these bearings speed limit is higher, the contact angle of 32 degrees, rigid, can withstand the overturning moment, widely used in cars in the front wheel hub (some models also use the same size double row tapered roller bearings).
Single row angular contact ball roughness measuring instrument: machine tool spindles, high frequency motors, gas turbines, centrifuges, small car front wheel, differential pinion shaft, booster pumps, drilling platforms, food machinery, dividing head, fill welder, low-noise cooling towers, electrical equipment, coating equipment, machine slot board, arc welding machine
Double row angular contact ball bearings: pump, blower, air compressor, various types of transmission, fuel injection pumps, printing machinery, planetary reducer, extraction equipment, cycloid reducer, food packaging machinery, welding machines, electric iron, square box, gravity gun, wire strippers, axle, test analysis equipment, fine chemical machinery

Single row angular contact ball bearings can withstand axial load in one direction

Single row angular contact ball mechanical spindle can withstand axial load in one direction, when the radial load, will cause additional axial force must be applied to the corresponding reverse load, therefore, the kinds of bearings are generally used in pairs. Double row angular contact ball bearings can withstand greater radial load mainly radial and axial joint load and moment loads, it can limit the bi-axial displacement of shaft or housing, the contact angle of 30 degrees.
Paired angular contact ball bearings can bear radial load mainly radial and axial joint load can also be subject to pure radial loads. Tandem configuration can only bear axial load in one direction, the other two configurations can withstand axial load in either direction. This type of bearing is generally matching pairs by the manufacturer to submit a user after installation preload interference, rings and balls in the axial pre-load condition, thereby enhancing the entire group as a single bearing support stiffness and rotation accuracy.

Angular contact ball bearings

Angular contact ball journal bearing: 7000C-type (α = 15 °), 7000AC type (α = 25 °) and 7000B (α = 40 °) of several types. This kind of bearing lock port on the outer ring, the inner and outer rings can not be separated in general, can withstand radial and axial joint load and axial load in one direction. Axial load capacity from the contact angle, the contact angle is larger, the ability to withstand high axial loads. This kind of bearing can limit the axial displacement in one direction shaft or housing.
Higher speed limit contact ball bearings can support radial load and axial load can also be subject to pure axial load, axial load capacity by the contact angle and the contact angle increases with the increase.

Bearing universal distribution group

Bearing universal distribution group
Universally matchable Cross roller bearing are specially processed, when the bearing is installed close to each other, any combination can achieve the established internal clearance or preload, and the average load distribution, without the use of shims or similar devices.
Paired bearing applications: When insufficient load carrying capacity of a single bearing (using channeling associated configuration) or when to bear the role of joint load or axial load in both directions (with back to back or face to face configuration).
2, the basic design of the bearing (can not be used as general-purpose with the group), is used to configure the way the individual bearings
Single row angular contact ball bearings are mainly applied basic design of only one bearing configuration at each location. Its width and the amount of outstanding ordinary level tolerances. Therefore not suitable for the two single row angular contact ball bearings close to the installation.

Pairs of double ball bearings

Pairs of double ball bearings
If paired installation, so that one pair of Ceramic Ball Bearings outer ring relative to that wide side face of wide and narrow side facing the narrow end. This can avoid additional axial force, and the shaft or housing to limit axial clearance within the range in both directions.
Its inner and outer ring raceway relative displacement on the horizontal axis, so it can support radial load and axial load - combined load (single row angular contact ball bearings can withstand axial load in one direction, so often paired installation).
Cage made ​​of brass, synthetic resins, etc., depending on the bearing forms, and application conditions.
More angular contact ball bearings are manufactured abroad bearing manufacturers, domestic applied to imported equipment such as more angular contact ball bearings 3204RS, etc.
Think back to back, back to front contact contact more simple, narrow side out, including wide-brimmed, another broadside included, narrow home, is back to back contact.

Single row angular contact ball bearings can withstand axial load in one direction

Single row angular contact ball bearings can withstand axial load in one direction, while the radial load, will cause additional axial force. And the only limit axial displacement in one direction shaft or housing. Angular contact ball bearings contact angle of 40 degrees, so you can bear large axial load. Angular contact ball bearings are non-separable design, inner and outer rings on both sides of the shoulder uneven. In order to improve the load angular contact ball bearing capacity, in which the shoulder side of the processing will be lower, so that the ball bearings can be put more.
Double row angular contact ball bearings can withstand greater radial load mainly radial and axial joint load and moment load limit axial displacement both axes. Mainly used to limit the axial displacement of the shaft and housing components in a two-way double row angular contact ball bearings, the outer ring can be tilted between finite, allowing the tilt angle depends on the bearing internal clearance, bearing size, interior design and acting on forces and moments on the bearings, and the maximum allowable tilt angle should ensure that the bearing will not generate excessive additional stress. If the bearing inner and outer angle of inclination between, will affect bearing life, also causing loss of precision bearings running, running noise increases. Double row angular contact ball bearings generally use nylon cage or solid brass cage. When the double row angular contact ball bearings installed should be noted that while bearings can withstand axial load, but if one side of the ball gap, you should be careful not to let the main axial load side through the gap Mizobe. Bearings should pay attention to the side without the ball gap to bear the main load raceway.