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    "Wind Power Bearing"

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    72 series
    2014-04-30

    719 series
    2014-05-16

    Single Row
    2016-12-02

    618/619
    2014-05-17

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    "Wind Power Bearing"

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    The failure forms of rolling wind power bearings
    2015-07-13
    (a) fatigue spallingInside and outside the rolling bearing raceway and rolling body alternately to enter and exit the bearing area, these parts due to long time under alternating load, first from the contact surface following the largest alternating shear stress fatigue crack, and then extend to the contacting surface produced punctate stripping in... (a) fatigue spallingInside and outside the rolling bearing raceway and rolling body alternately to enter and exit the bearing area, these parts due to long time under alternating load, first from the contact surface following the largest alternating shear stress fatigue crack, and then extend to the contacting surface produced punctate stripping in the Taper roller bearings surface layer, and gradually developed into large particles, called fatigue spalling.(two) wearThe raceway and rolling body relative motion and dust caused by foreign body surface wear, lubrication will aggravate the wear, the bearing clearance increases, the surface roughness increased, decreased the SUNTHAI bearing rotation accuracy, and thus reduce the motion accuracy of the machine, showed increasing vibration and noise.(three).Because the bearing inner raceway and rolling body contact on the surface of the micro convex or hard particles make contact surface uneven stress, in poor lubrication, high speed and heavy load conditions, due to the local friction heat caused by the contact surface of local deformation and friction welding, serious when may partially melted metal worm gear speed reducer surface, the contact surface on the local friction force the welding point tear from the base.(four) fractureWhen the wind power bearing load, vibration is too large, the defect position of inner and outer rings in the repeated impact roller, defects gradually expanded and fracture.(five) corrosionWater or acid, alkaline substances directly can cause invasive SUNTHAI bearing corrosion. When the SUNTHAI bearing internal shaft current through it, causing spark at the contact point raceway and rolling body to cause electrical erosion, formed on the surface of the uneven washboard. View Details
    angular contact ball bearing
    2015-06-01
    The structure and properties of angular contact ball bearing(1) the angular contact ball bearing deep groove ball bearing basic similar shape, there is a ring with only a wall, the other side slope. Compared with the same series of deep groove ball bearings with inner diameter specifications, the difference high speed bearing lies in the cage ... The structure and properties of angular contact ball bearing(1) the angular contact ball bearing deep groove ball bearing basic similar shape, there is a ring with only a wall, the other side slope. Compared with the same series of deep groove ball bearings with inner diameter specifications, the difference high speed bearing lies in the cage structure and with the number of the steel ball a little more.(2) in the deep groove ball bearing inner ring angular contact ball bearing with outer slope of the inner ring is completely general, such as the inner ring to the deep groove ball bearing 6204 generic row angular contact ball bearing 7204AC.(3) the angular contact ball bearing retainer is real shape or stamped, no need of rivets.(4) the limit speed angular contact ball bearing is higher than that of deep groove ball bearing the same size.(5) can bear radial load, also can Double Row Ball Slewing Bearing withstand a one-way axial load is larger, the contact angle is large ratio the bearing axial load and radial load is bigger.(6) even bear radial load, also produce axial force, so the general angular contact ball bearings are used in pairs.(7) the wind power bearing Ding is, because of the effects of axial pre load after installation. Can eliminate bearing internal clearance, so relatively improve the rotation accuracy of R bearing. The application example in the machine tool spindle high precision, can make the radial and axial spindle runout minimum.(8) two or more than two angular contact ball bearing group, can bear double direction axial load, or increase the bearing capacity of the single slewing rings direction axial load.(9) through the pre load can obtain more rigid and maintain long-term rotation precision characteristics of bearing the original. View Details
    wind power bearing raceway acoustic
    2015-05-07
    Influence of bearing structure on the vibration and noise.Rolling road sound is due to rotation of the bearing rolling body raceway rolling in and create a smooth and continuous noise, only when the sound pressure level or tone greatly when attention. In fact, the rolling sound excited acoustic energy is limited, such as in the normal condition, th... Influence of bearing structure on the vibration and noise.Rolling road sound is due to rotation of the bearing rolling body raceway rolling in and create a smooth and continuous noise, only when the sound pressure level or tone greatly when attention. In fact, the rolling sound excited acoustic energy is limited, such as in the normal condition, the quality of the 6203 bearing raceway acoustic ranged from 25 to 27dB. Single row wind power bearing bearing this noise to bear radial load as the most typical, it has the following characteristics:A. noise, vibration is random;B. vibration frequencies above 1kHz;C. No matter how changes in speed, noise frequency and sound pressure level is almost the same with the speed increase;D. when the radial clearance increases, the sound pressure level increases sharply;Rigid E. bearing increases, the lower the total sound pressure level, even if the speed increased, the overall sound pressure level increases slightly;F. lubricant viscosity is high, the sound pressure level is low, but for grease lubrication, the shape and size of the viscosity, the soap fiber can affect the value of the noise. View Details
    The new trend of the development of wind power technology
    2015-01-28
    With the increasing capacity of wind power unit, a main design direction is to reduce the weight of engine room,that is,lower per kilowatt of power required for raw material input (kg / kW). Many studies show that the current design trends and major manufacturers, taper roller bearings can adapt to large wind turbine operation and bear the com... With the increasing capacity of wind power unit, a main design direction is to reduce the weight of engine room,that is,lower per kilowatt of power required for raw material input (kg / kW). Many studies show that the current design trends and major manufacturers, taper roller bearings can adapt to large wind turbine operation and bear the combined load, improve the rigidity of the system, ensure the fan steady operation in the greater load under. Whether used for gear box or the main shaft, design of conical roller bearing can be based on ensuring the reliable operation of the effective control the size of bearing and spindle and gear box and other related parts size, preventing cabin weight increased too much, to further upgrade help wind turbine design. View Details
    Darling of clean energy,wind power.
    2015-01-28
    The world wind power generating capacity by the end of 2002 is about 31000MW, a 27% increase over the previous year. The wind power generation is no carbon dioxide emissions and clean energy minimum influence on the environment,  recent years  with the rapid popularization in the world.  In the field of wind power, improving equ... The world wind power generating capacity by the end of 2002 is about 31000MW, a 27% increase over the previous year. The wind power generation is no carbon dioxide emissions and clean energy minimum influence on the environment,  recent years  with the rapid popularization in the world.  In the field of wind power, improving equipment reliability and reducing the cost of power generation to improve its economy is the main subject. An important component of support bearing of wind generator, fully consider the environment, which need to the best design of high reliability and high economy coexist. View Details
    Angular contact ball bearings feature
    2014-12-18
    Angular contact ball bearings four point contact ball slewing bearing namely, due to be loaded more of the ball, the radial load capacity is greater than the ordinary ball bearings can withstand large axial load or under pure axial load, which allows operating speed and deep groove ball bearings are similar but more rigid support, but requires the ... Angular contact ball bearings four point contact ball slewing bearing namely, due to be loaded more of the ball, the radial load capacity is greater than the ordinary ball bearings can withstand large axial load or under pure axial load, which allows operating speed and deep groove ball bearings are similar but more rigid support, but requires the installation of precision, to the axis misalignment error is very sensitive, it is generally not used alone to bear radial load, while at the same radial load must bring additional axes to load. This variant bearing many varieties of applications, often made with 15 °, 25 ° and 40 ° contact angle three kinds of series, the greater the contact angle, the higher the axial load capacity, but should be used in high speed small contact angle is appropriate.Most of these bearings in pairs for small span rigid support shaft or double precision spindle, should be carefully adjusted when using good clearance, change in the bearing outer ring axial distance, you can adjust the internal bearing clearance, while the sets of bearings installed in parallel and give some preloaded amount, can improve the rigidity of the angular contact ball bearing system.This type of single bearings can withstand axial load in one direction, while the need to configure additional bearings to offset their additional axial force, made for the installation of its additional axial force that cancel each other out, and the two forces can withstand up axial load in both directions and has a strong ability to limit axial, generally use two sets of bearings installed in pairs opposite (back to back) or a relatively narrow end (face to face) is installed in the form of its two outer wide face, which rigid bearing system mounted back to back is best. For ease of installation in pairs or groups, some bearing plants supply pairs, three of a group and a set of four sets of bearings, etc., bearing the same batch processing thus supplied good consistency, when used to bear the load more evenly, additional axial forces cancel each other out more thoroughly.This type bearings are non-separable and non-release of two separate triple row roller slewing bearing for restricted installation conditions, requirements from the entire outer or inner ring bearings were installed to remove the case to the next, due to the separation of angular contact ball magnetic bearings are widely used in motors, so also known as magneto bearings. This type of bearing on the inner locking variety, and can be adapted to the higher speed. View Details