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2015年11月27日星期五
Ferris wheel to take "sub-assembly method with" Install
Ferris wheel to take "sub-assembly method with" Install. Firstly the spindle and the ferris wheel bearing installation, which is the dot whole Ferris wheel; followed by the installation of the wheel and cockpit, wheel outside the racking several transparent cockpit, which can concept for hundreds of people; and finally electric drive mounting device, which is located in the Ferris wheel and bridge binding place, after opening the Ferris wheel can be controlled uniform rotation, revolution needs about 30 minutes to reach the highest point, with sweeping views of the surrounding, you can see within a radius of 40 km views. Ferris wheel means no gear wheel bearings four point contact ball slewing bearing, a separate type of bearings, it can be said that a two-way bearings can withstand axial load angular contact ball bearings.
2015年11月23日星期一
Wheel bearings applied ferris wheel bearing
turntable bearing can withstand a large axial load, radial load and overturning moment, such as integrated load, set bearing, large bearing rotation, transmission, fixed and other functions in a special structure. Under normal circumstances, transfer All with their own plate bearing mounting holes, lubricants and seals, to meet the different needs of a variety of different types of work working conditions hosts; on the other hand, wheel bearing itself has a compact, convenient rotation guide, installation Simple and easy maintenance, etc., are widely used in material handling equipment (ferris wheel bearing), mining machines, construction machinery, port machinery, wind energy, medical equipment, radar and missile launchers and other large rotary device.
2015年3月26日星期四
Crane bearing telescopic crane loop and lifting arm luffing loop
- Telescopic crane loop
The hanging arm is composed of basic arm and a telescopic arm,mobile crane bearing a telescopic arm in arm in the basic set. Telescopic boom is controlled by the telescopic hydraulic cylinder and steel wire rope. In order to prevent the hanging arm falling on the mass of the balance valve, a telescopic loop.
- The lifting arm luffing loop
The so-called amplitude hydraulic cylinder is used to change the angle of the boom.( ship loader bearing ) Luffing operation is also required to prevent the drop in weight function, therefore the lazy arm amplitude circuit is also provided with a balanced valve. Failure of truck crane bearing hydraulic system is mainly manifested in the five loop, the most common fault is the system pressure is insufficient and the hydraulic cylinder retracts.
2015年3月16日星期一
Hoisting mechanism circuit of mobile crane bearing
The lifting mechanism is the main implementation mechanism of crane, winch is driven by one or two large torque hydraulic motor.( ferris wheel bearing ) Motor forward and reverse control by a manual three position four way reversing valve.
The rotational( rotary bearing ) speed of the motor, namely the lifting speed can be adjusted by changing the speed of the engine. In the back of the oil motor decline on the road with the balance valve,ship loader bearing used to prevent the free falling weight.
2015年3月12日星期四
Slewing mechanism circuit of mobile crane bearing
The slewing mechanism ( slewing bearing manufacturer )adopts the hydraulic motor as the actuator. The hydraulic motor through a speed reducer to drive the turntable, the turntable speed is low, generally 1 ~ 3r/min. To obtain a left turn, right turn stop,mobile crane bearing three different conditions through a three position four way manual reversing valve.
2015年3月9日星期一
Outrigger retractable of hydraulic truck crane bearing
Because the bearing capacity of the Automobile Tire Co., during the lifting operation must put down the leg, make tire overhead, and the car must be the away leg. There are two legs before and after the crane bearing , each leg were controlled by the manual reversing valve, the legs with horizontal and vertical hydraulic cylinder hydraulic cylinder (mobile crane bearing ).Vertical hydraulic cylinder with bidirectional hydraulic lock, to ensure that the leg is reliably locked, prevent the lifting operations occurring in the process of Soft Legs phenomenon or in the driving process of hydraulic legs automatically falls,ferris wheel bearing .
2015年3月5日星期四
Full hydraulic mobile crane bearing
Full hydraulic truck crane is a kind of truck crane slewing （crane bearing ), luffing, full hydraulic transmission and hydraulic operation.
The outrigger retractable, slewing mechanism, the five part telescopic crane lifting mechanism, and the lazy arm amplitude are the hydraulic drive, stepless speed regulation( high speed bearing ), and according to the need to make any part of a separate action,mobile crane bearing also can be in the implementation of components is not full, the implementation of components of each series of any group of contract action.
The outrigger retractable, slewing mechanism, the five part telescopic crane lifting mechanism, and the lazy arm amplitude are the hydraulic drive, stepless speed regulation( high speed bearing ), and according to the need to make any part of a separate action,mobile crane bearing also can be in the implementation of components is not full, the implementation of components of each series of any group of contract action.
2015年2月26日星期四
Safety test of ferris wheel bearing
About the test—— ferris wheel bearing installed in Beijing not only requires a 100 meter high tower, but also need for many eye bolt for bearing rising.
Some people think this is a very simple thing. But far from it, We conducted a series of complex experiment in Herzogenaurach ,Schaeffler group headquarters . Technical personnel must examine these eye bolt line whether can withstand so large a weight. Because one thing must be guaranteed, it is safe.
Some people think this is a very simple thing. But far from it, We conducted a series of complex experiment in Herzogenaurach ,Schaeffler group headquarters . Technical personnel must examine these eye bolt line whether can withstand so large a weight. Because one thing must be guaranteed, it is safe.
2015年2月16日星期一
Beijing bearing standard contrast the world's largest Ferris wheel
The real work that engineers are impressive, only when you really start to face with huge bearing imagined in the silver light you can realize its true size, an unprecedented huge monster.
Schaeffler heavy machinery group company's person in charge Henri van der Knokke recalled,When a written request we received Beijing great wheel dimensions and specifications, the first feeling is not believe my own eyes, when we research this project, like a spherical roller bearing require to undertake such a large size is unprecedented.
In fact, the team was involved in the design, the construction was acclaimed as the world biggest Ferris wheel of the London Millennium years ferris wheel bearing. But Beijing ferris wheel was put forward further requirements: bearing outside diameter size of London is 2600 mm, but this is just the standard of inner ring hole bearing in Beijing.
Schaeffler heavy machinery group company's person in charge Henri van der Knokke recalled,When a written request we received Beijing great wheel dimensions and specifications, the first feeling is not believe my own eyes, when we research this project, like a spherical roller bearing require to undertake such a large size is unprecedented.
In fact, the team was involved in the design, the construction was acclaimed as the world biggest Ferris wheel of the London Millennium years ferris wheel bearing. But Beijing ferris wheel was put forward further requirements: bearing outside diameter size of London is 2600 mm, but this is just the standard of inner ring hole bearing in Beijing.
2015年2月10日星期二
The ferris wheel appearance of Haihe River
In the German custom of Cihai Bridge giant wheel bearing reached construction site of Tianjin,China,2007. After the installation is complete implementation of the ferris wheel installed on the Cihai Bridge Human character support, basicly complete in June. 110 meters in diameter of the giant ferris wheel appear on Haihe river.
According to the construction personnel of Cihai Bridge introduction, the Cihai Bridge Ferris wheel is the world's only built on the bridge Ferris wheel, the 110 metres in diameter, which is relatively high for carrying the ferris wheel rotating bearing technology requirements.
The bearing in the German custom diameter of 3.5 meters, is located in the center of the main bearing of Cihai Bridge Ferris wheel.
Reportedly, at present, there are some parts of Cihai Bridge in the field of production, for supporting the Cihai Bridge giant Ferris wheel Human word bracket has been installed, with the installation of the ferris wheel condition.
The ferris wheel of the installation is a difficult engineering, roulette will be divided into 24 equal parts, a section to install, just as the segments into a big orange.
According to the construction personnel of Cihai Bridge introduction, the Cihai Bridge Ferris wheel is the world's only built on the bridge Ferris wheel, the 110 metres in diameter, which is relatively high for carrying the ferris wheel rotating bearing technology requirements.
The bearing in the German custom diameter of 3.5 meters, is located in the center of the main bearing of Cihai Bridge Ferris wheel.
Reportedly, at present, there are some parts of Cihai Bridge in the field of production, for supporting the Cihai Bridge giant Ferris wheel Human word bracket has been installed, with the installation of the ferris wheel condition.
The ferris wheel of the installation is a difficult engineering, roulette will be divided into 24 equal parts, a section to install, just as the segments into a big orange.
2015年2月7日星期六
Strong mobile crane market
In March, 2009 ,truck crane, crawler crane ,lorry-mounted crane， wheel crane and other cranes of radar bearing four cumulative sales of more than 3000 , 56.82% growth than last month, 9.05% over the same period last year. The first quarter of four cranes of cumulative sales of 7056 units,4.40% below compared to the same period last year.
Overall, the recent China four categories of ship loader bearing market continued to show strong market development trend, showing a basic Production and Sales Booming situation. But due to the 1-2 month crane market dragged down, four categories of mobile crane market performance is still slightly less than a quarter of the same period last year.
According to the general rising market demand, a mobile crane bearing market must also ready for action.
Overall, the recent China four categories of ship loader bearing market continued to show strong market development trend, showing a basic Production and Sales Booming situation. But due to the 1-2 month crane market dragged down, four categories of mobile crane market performance is still slightly less than a quarter of the same period last year.
According to the general rising market demand, a mobile crane bearing market must also ready for action.
2015年2月4日星期三
The ferris wheel bearing tragedy
In December 4, 2014, Pakistan's second largest city Lahore Jalloh theme park ferris wheel bearing fault occurred, 5 school teachers and students died on the spot,leaving 47 victims.
At 11 AM, the local West school teachers and students sit to pull on the skyscraper wheel, with the big wheel rotation. When the ferris wheel to the top speed, bearing rupture suddenly,the ferris wheel like huge monster for the centrifugal force quickly to outside the crowd came hurtling, hitting people picnic on the grass, on the spot to fall dead, killed 5 teachers and students, of which 3 are children of 8-13 years old, the other 2 are old.
According to reports, the Jalloh theme park recreation facilities in disrepair, serious lack of maintenance. Events soon, casualties of teachers and students family members decided to jointly to resort to the law, requirements for the park managers to make tough sanctions.
Anything has use period, but LYHY ferris wheel bearing ,metallurgical bearing and mobile crane bearing can do our best to provide the best quality service.
At 11 AM, the local West school teachers and students sit to pull on the skyscraper wheel, with the big wheel rotation. When the ferris wheel to the top speed, bearing rupture suddenly,the ferris wheel like huge monster for the centrifugal force quickly to outside the crowd came hurtling, hitting people picnic on the grass, on the spot to fall dead, killed 5 teachers and students, of which 3 are children of 8-13 years old, the other 2 are old.
According to reports, the Jalloh theme park recreation facilities in disrepair, serious lack of maintenance. Events soon, casualties of teachers and students family members decided to jointly to resort to the law, requirements for the park managers to make tough sanctions.
Anything has use period, but LYHY ferris wheel bearing ,metallurgical bearing and mobile crane bearing can do our best to provide the best quality service.
2015年1月29日星期四
Find weakness,breakthrough bearing industry
Recent years, high speed bearing Rail, automobile, ship loader bearing and engineering machine industry of China is rapidly developing. as the industry foundation accessory equipment demand has increased dramatically, bearing opened huge market demand space of China bearing industry.
The current bearing produced in China and world industrial powers of production, where still exsits a certain gap .It mainly displays among the high technology, high precision bearing , high value added products the proportion of low, the stability of the product needs to be further improved and improvement.
The current bearing produced in China and world industrial powers of production, where still exsits a certain gap .It mainly displays among the high technology, high precision bearing , high value added products the proportion of low, the stability of the product needs to be further improved and improvement.
2015年1月26日星期一
Common sense of Ferris wheel
The Ferris wheel bearing , a structure composed of a rotating vertical wheel multi passenger component, in such a way, the rotation of the wheels on the edge, they remain upright, usually by gravity.
Some of the largest modern mobile crane bearing is arranged on the rim, the electric motor rotate independently, upright every car. These wheels are sometimes referred to as observation wheels, whose cars are called capsule, however these alternative name, sometimes used with conventional gravity type vehicle wheel.
The first Ferris wheel was built by George Washington gale Ferris, as small as, signs in the 1893 Chicago World Expo Kolumb. Ferris round of the term collectively referred to as all this structure, this is the type of now rides on national exhibition in the most common American.
Some of the largest modern mobile crane bearing is arranged on the rim, the electric motor rotate independently, upright every car. These wheels are sometimes referred to as observation wheels, whose cars are called capsule, however these alternative name, sometimes used with conventional gravity type vehicle wheel.
The first Ferris wheel was built by George Washington gale Ferris, as small as, signs in the 1893 Chicago World Expo Kolumb. Ferris round of the term collectively referred to as all this structure, this is the type of now rides on national exhibition in the most common American.
2014年12月3日星期三
The factors of slim ball bearing
A large number of domestic and international tests show: cage, collar, processing quality ball bearing vibration having different degrees of impact, which processing quality ball bearing vibration impact on the most obvious, followed by rings of processing quality, the most important influence factor is the roundness of the ball and rings, waviness, roughness, surface bump injuries.
Our ball products most prominent problem is the discrete vibration, surface defects serious (single point, the group points, pits, etc.), although the surface roughness, size, shape, and the error is not lower than the level of the loop, but the co-sets After high slim ball bearing vibration, and even different sound, the main problem is the waviness no control (no standard, no proper testing of the instruments), while the description of the machine vibration resistance poor, wheel, grinding disc, coolant, process parameters are problematic ; on the other hand to improve the management level, to avoid the bump injuries, scratches, burns and other machines of quality problems at any time.
For rings, the most serious impact of bearing vibration is channel waviness and surface roughness. For example, small and medium deep groove ball bearings inside and outside the channel roundness greater than 2μm, will have a significant impact on the bearing vibration, while the inner and outer channel waviness greater than 0.7μm, slewing ring bearing vibration value increases with increased waviness, the channel serious gouges Vibration can rise more than 4dB, and even different tone.
Whether balls or rings, waviness produced in grinding, superfinishing although you can improve waviness and roughness reduced, but the most fundamental measure is to reduce the process of ultra-fine grinding waviness, avoid randomness bump hurt, there are two main measures:
First, reduce the vibration of the rolling surface of ultra-fine grinding time, get a good shape accuracy and surface finish quality surface texture to reduce vibration, wear super machine must have good vibration resistance, bed and other important structural member having vibration absorption, super precision machine tools Whetstone oscillation system with good anti-vibration performance; improve grinding speed, grinding 6202 foreign commonly used outer raceway 60,000 spindle, grinding speed 60m / s or more, domestic general much lower, mainly due to the spindle and restrictions main bearing performance.
When the high-speed grinding, grinding force is small, thin grinding deterioration, do not burn easily, but also can improve the precision and efficiency, a significant impact on low-noise ball bearings; spindle speed characteristics of static and dynamic stiffness and low noise ball bearing large grinding vibration, the higher the stiffness, grinding speed, the less sensitive to changes in the grinding force, grinding system vibration is smaller; increase support rigidity spindle bearings, using random balancing technology to improve
the grinding spindle vibration sex. Foreign grinding vibration velocity approximately one tenth the domestic general spindle; Whetstone wheel is essential to improve the quality of cutting and trimming. China is currently the main problem is wheel Whetstone uniformity poor organizational structure, seriously affecting the ultra low noise ball bearing grinding process quality; sufficiently cooled, improve filtering accuracy; improve the resolution of the fine feed to the system, reduce the feed inertia; super reasonable processing mill process parameters and manufacturing processes are factors that can not be ignored, grinding allowance should be small, geometric tolerances and strict,
small ball ferris wheel bearing diameter should not use super-lapping, super coarse grinding should be separated to ensure good surface quality.
The second is to improve the machining accuracy of the reference plane, reduce grinding and superfinishing process of error reflection end surface is the outer diameter of the grinding process of super-positioning reference. The outside diameter of the channel ultra fine error reflection on the ditch by the outside diameter grinding, grinding on ditch super error reflection passed indirectly. If the work piece bump hurt in the transfer process, the complex will be directly mapped onto the raceway machined surface, the impact of bearing vibration. So you must take the following measures: to improve the positioning reference surface shape accuracy; processing pass smooth, no bump injury; rough allowance geometric error can not be too large, especially when allowance is small, too large error
will result in a final grinding and ultra-fine At the end of the final shape accuracy has not been improved to the quality requirements, seriously affect the consistency of the processing quality.
From the above analysis is not difficult to see: Auto-line consists of high performance, high stability of the machine system consisting of grinding the most suitable machining ultra low noise ball bearing, avoid bump hurt, reduce transmission error, eliminate artificial factors, improve processing efficiency and quality consistency reduce production costs and improve efficiency.
Our ball products most prominent problem is the discrete vibration, surface defects serious (single point, the group points, pits, etc.), although the surface roughness, size, shape, and the error is not lower than the level of the loop, but the co-sets After high slim ball bearing vibration, and even different sound, the main problem is the waviness no control (no standard, no proper testing of the instruments), while the description of the machine vibration resistance poor, wheel, grinding disc, coolant, process parameters are problematic ; on the other hand to improve the management level, to avoid the bump injuries, scratches, burns and other machines of quality problems at any time.
For rings, the most serious impact of bearing vibration is channel waviness and surface roughness. For example, small and medium deep groove ball bearings inside and outside the channel roundness greater than 2μm, will have a significant impact on the bearing vibration, while the inner and outer channel waviness greater than 0.7μm, slewing ring bearing vibration value increases with increased waviness, the channel serious gouges Vibration can rise more than 4dB, and even different tone.
Whether balls or rings, waviness produced in grinding, superfinishing although you can improve waviness and roughness reduced, but the most fundamental measure is to reduce the process of ultra-fine grinding waviness, avoid randomness bump hurt, there are two main measures:
First, reduce the vibration of the rolling surface of ultra-fine grinding time, get a good shape accuracy and surface finish quality surface texture to reduce vibration, wear super machine must have good vibration resistance, bed and other important structural member having vibration absorption, super precision machine tools Whetstone oscillation system with good anti-vibration performance; improve grinding speed, grinding 6202 foreign commonly used outer raceway 60,000 spindle, grinding speed 60m / s or more, domestic general much lower, mainly due to the spindle and restrictions main bearing performance.
When the high-speed grinding, grinding force is small, thin grinding deterioration, do not burn easily, but also can improve the precision and efficiency, a significant impact on low-noise ball bearings; spindle speed characteristics of static and dynamic stiffness and low noise ball bearing large grinding vibration, the higher the stiffness, grinding speed, the less sensitive to changes in the grinding force, grinding system vibration is smaller; increase support rigidity spindle bearings, using random balancing technology to improve
the grinding spindle vibration sex. Foreign grinding vibration velocity approximately one tenth the domestic general spindle; Whetstone wheel is essential to improve the quality of cutting and trimming. China is currently the main problem is wheel Whetstone uniformity poor organizational structure, seriously affecting the ultra low noise ball bearing grinding process quality; sufficiently cooled, improve filtering accuracy; improve the resolution of the fine feed to the system, reduce the feed inertia; super reasonable processing mill process parameters and manufacturing processes are factors that can not be ignored, grinding allowance should be small, geometric tolerances and strict,
small ball ferris wheel bearing diameter should not use super-lapping, super coarse grinding should be separated to ensure good surface quality.
The second is to improve the machining accuracy of the reference plane, reduce grinding and superfinishing process of error reflection end surface is the outer diameter of the grinding process of super-positioning reference. The outside diameter of the channel ultra fine error reflection on the ditch by the outside diameter grinding, grinding on ditch super error reflection passed indirectly. If the work piece bump hurt in the transfer process, the complex will be directly mapped onto the raceway machined surface, the impact of bearing vibration. So you must take the following measures: to improve the positioning reference surface shape accuracy; processing pass smooth, no bump injury; rough allowance geometric error can not be too large, especially when allowance is small, too large error
will result in a final grinding and ultra-fine At the end of the final shape accuracy has not been improved to the quality requirements, seriously affect the consistency of the processing quality.
From the above analysis is not difficult to see: Auto-line consists of high performance, high stability of the machine system consisting of grinding the most suitable machining ultra low noise ball bearing, avoid bump hurt, reduce transmission error, eliminate artificial factors, improve processing efficiency and quality consistency reduce production costs and improve efficiency.
2014年11月27日星期四
Wheel Bearing Maintenance
Before removing the wheels, wheel maintenance should do the preparatory work, the car parked and set up a bridge in order to ensure the maintenance of safe operations.
(1) Remove the hub shaft head decorative cover, dust cover;
(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If the disc brakes, the brake should be removed and then used pliers to remove the lock ring or locking pin.
(3) with a special tool to remove the hub;
(4) scrape ferris wheel bearing, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and dry with a cloth, and finally with a cloth to wipe the hub cavity.
(5) Check the wheel bearings and bearing races, found cracks, flaking and loose roller bearings and other phenomena, replace the bearings. If you find pitting on the bearing race, it should replace the bearings.
When cope with the situation
(6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the maximum wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Is not allowed to play glitches, pitting the journal to narrow the gap.
(7) Upon completion of all parts meet the requirements, the inner flanged ball bearing grease after release hub.
(8) When grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge from the other side of the bearing. In the hub and shaft cranial cavity Apply a thin layer of grease to make it play a role in rust. Note the hub cavity grease Do not apply too much, otherwise it will affect the cooling and braking.
(9) the hub and the outer bearings mounted back on the journal, hand-axis head adjustment nut, and then use the shaft torque wrench required to tighten the adjusting nut. After tightening the nut, turning left and right wheels laps should see bearing installation; on the other hand, by rotating the bearing and the race proper fit. At this time spherical plain bearings tightness appropriate wheels to rotate freely and not feel the axial clearance.
(10) Finally, in order to install the locking plate, fixing nut, tires, dust cover and decorative cover and other parts.
(11) wheel bearings adjusted, with some mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, caused by bearing adjustment too tight, should be re-adjusted
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appropriately relaxed bearing tightness.
(1) Remove the hub shaft head decorative cover, dust cover;
(2) Remove the wheel nuts and tires, be careful not to bruise the tire bolt threads. If the disc brakes, the brake should be removed and then used pliers to remove the lock ring or locking pin.
(3) with a special tool to remove the hub;
(4) scrape ferris wheel bearing, journal and hub cavity of the old grease, cleaning wheel bearings and journal with detergent and dry with a cloth, and finally with a cloth to wipe the hub cavity.
(5) Check the wheel bearings and bearing races, found cracks, flaking and loose roller bearings and other phenomena, replace the bearings. If you find pitting on the bearing race, it should replace the bearings.
When cope with the situation
(6) Check the bearing bore and the journal, with the gap should not exceed 0.1Omm measuring journal, should be in the upper and lower parts of the vertical ground (where the maximum wear parts) measurements. If used with the gap exceeds the limit, replace the bearing, so back to normal with the gap. Is not allowed to play glitches, pitting the journal to narrow the gap.
(7) Upon completion of all parts meet the requirements, the inner flanged ball bearing grease after release hub.
(8) When grease the bearing cavity attention should be squeezed into the bearing grease until grease to date to emerge from the other side of the bearing. In the hub and shaft cranial cavity Apply a thin layer of grease to make it play a role in rust. Note the hub cavity grease Do not apply too much, otherwise it will affect the cooling and braking.
(9) the hub and the outer bearings mounted back on the journal, hand-axis head adjustment nut, and then use the shaft torque wrench required to tighten the adjusting nut. After tightening the nut, turning left and right wheels laps should see bearing installation; on the other hand, by rotating the bearing and the race proper fit. At this time spherical plain bearings tightness appropriate wheels to rotate freely and not feel the axial clearance.
(10) Finally, in order to install the locking plate, fixing nut, tires, dust cover and decorative cover and other parts.
(11) wheel bearings adjusted, with some mileage (about 1Okm), stop and check for swab touch wheel temperature, if fever, caused by bearing adjustment too tight, should be re-adjusted
2014年7月16日星期三
The speed limit ferris wheel bearing raceway noise solution
The speed limit is the maximum speed allowed in ferris wheel bearing load, lubrication condition, and the bearing type, size, load magnitude and direction, lubrication, clearance, cage structure and cooling conditions and many other factors.
Factors affecting the speed limit: load size, Slewing drives load type and direction, lubricant and lubrication method. Experience shows that: to improve the manufacturing precision, bearing the appropriate to increase the bearing clearance, the cage material and special structure, but also can improve the speed limit bearing.
The reason of high temperature of bearing: lubricating oil quality does not meet the requirements or deterioration, the oil viscosity is too high; mechanism assembly tight (spaces); one-way preloaded bearing; bearing race rotation on the shaft or shell; overload; bearing retainer or rolling body fragmentation. Guide roller, guide, slider, linear bearings, miniature ball bearings series of deep groove ball bearing series needle roller bearings, thrust ball bearings
Rolling bearing is allowed in the work of the minor operation noise, if the sound is too loud or unusual noise or impact sound, it indicates that the bearing failure.
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