wind power bearing Bearing grinding

Bearing grinding: grinding stainless steel material selection method and technical points

Because of some manufacturers of special requirements, Luoyang Boying bearing production cross roller bearings and YRT turntable bearing needs to use the stainless steel wind power bearing‍ material, the need to do not with ordinary high carbon chromium bearing steel grinding, the grinding requirements of stainless steel material are introduced.

1..... Abrasive: white corundum with cutting performance and word sharp good, suitable for grinding martensite and martensitic and ferritic stainless steel; single crystal corundum abrasives suitable for austenitic and austenitic and ferritic stainless steel; microcrystalline corundum abrasive self aligning ball bearing‍ is composed of many small crystals, high strength, toughness and self sharpening good,

The self sharpening characteristics is the gap along the microcrystalline broken column, so as to obtain micro toughness

And micro edge higher, can reduce the burn, hacking and other phenomena, and can reduce the grinding surface roughness, suitable for grinding various stainless steel; cubic boron bearing‍ nitride abrasive high hardness, good thermal stability, high chemical inert, 1300 ℃ ~ 1500 ℃ no oxidation, abrasive blade tip is not easy to blunt, grinding heat is small, suitable for grinding various kinds of stainless steel, in order to reduce the adhesion phenomenon, also can use silicon carbide.     

wheel bearing often occurred in winter

C. for only the radial load and the radial clearance is large but also easy to produce.

D. also can be in a certain range and different size bearing its speed range are also different.

E. may be a continuous sound may wheel bearing‍  be intermittent sound.

F. the forced vibration often excited outer two order, three order bending vibration, thus make the noise. Through the use of pre load equation method can effectively reduce the noise, reduce the installed bearing radial clearance, choose good lubricants can also improve, some foreign enterprises adopt light rolling body, such as ceramic roller or hollow roller and other technical measures to prevent the occurrence of such noise.

The 3 tip.

It is a metal sliding friction high precision bearings‍ produced quite sharp scream, though bearing temperature rise is not high, it will not have much impact on the service life of the bearing and grease life, does not affect the rotation, but not melodious sound disturbing, especially bear radial load of large cylindrical roller bearings often have this noise, the characteristics of:

A. bearing radial clearance large easy to produce.

B. usually occurs in grease lubrication, oil lubrication is rare.

C. decreases with the bearing size increases, Slewing drives‍ and often appears in a certain speed range.

D. winter often.

E. its appearance is irregular, and unpredictable, and associated with the installation of operating conditions and performance, filling grease amount. This noise can be used to reduce the bearing radial clearance and the shallow outer ring raceway structure to prevent.‍

wind power bearing fall rolling sound

The noise in general, mostly large bearings at low speeds and bear radial load. When the operation of the bearing in the radial load, load and non load bearing, wind power bearing‍ if the bearing has a radial clearance, the non load area of the rolling body and the inner raceway no contact, but because of the action of centrifugal force may be associated with the outer ring contact, therefore, at low speeds, the centrifugal force is less than when rolling body weight when the natural vibration and noise, the rolling of the fall and and inner raceway or cage collision and motivate the bearing, Flange Slewing Bearing‍ and has the following characteristics:

Easy to produce A. grease lubrication, oil lubrication is not easy to produce. When use inferior lubricating grease are more susceptible to.                                                                                                                                                                               ‍

LYHY deck crane bearing raceway acoustic

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 deep groove ball bearing this noise to bear radial load as the most typical, it has the following characteristics:

A. noise, vibration is random;

B. vibration frequencies deck crane bearing‍ 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 bearing‍ 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.

Rolling road sound source is the inherent vibration caused by load ring after. Due to the elastic contact rings and rolling elements of nonlinear vibration system. When the lubrication Angular contact ball bearings‍ or machining precision is not high it will inspire the vibration associated with the elastic characteristics, transfer into the air into a noise. As everyone knows, even using the modern technology of manufacturing the highest machining bearing parts, its work surface there are tiny geometric error is not a degree, so that the raceway and rolling body produce tiny wave excitation vibration vibration system. Although it is inevitable, however, can adopt high precision machining parts work surface, the correct selection of denoising bearing and precise use of the bearing so that the damping.

wheel bearing bearing arrangement includes

The bearing arrangement includes not only the rolling bearing, but also with the bearing components related, such as the shaft and the bearing seat. A very important part of the lubricant is also bearing configuration, as lubricants to corrosion abrasion proof, so that the bearing can give full play to the role of. In addition, the seal is also a very important component, the seal performance is very important for lubricant clean, ferris wheel bearing ‍keep clean the bearing service life have a profound impact.

In order to design of rolling bearing configuration, need

– select the suitable bearing type and

Determine the appropriate size of the - bearing,

But this is not enough. There are several other aspects to consider:

- such as the other parts deck crane bearing‍ of the bearing arrangement proper form and design,

- correct fit and bearing internal clearance or preload,

- fixed device,

Seal - proper,

The type and dosage, lubricant, and

- installation and removal methods.

Each individual will affect the performance, reliability and economy of the bearing arrangement.

Work required depends on whether similar bearing matching experienced. In case of lack of experience, there are special requirements, or the need for self aligning bearing‍ bearing configuration cost and any other subsequent appearance to give special consideration, we need to do more work, such as a more accurate calculation or test.

Selection and application of bearing‍

The reason of corrosion rust wind power bearing

wind power bearing corrosion is very common, it would reduce the service life of bearing. So everyone in daily work must pay attention to this problem.

Determine the cause and prevention method of high temperature bearing corrosion, first look at the high temperature bearing corrosion is caused by what, generally divided into external and internal. Sum up the main:

1 metal surface finish (oxygen concentration difference cell corrosion).

The 2 metal material chemical composition and structure.

Solution composition and pH 3 in contact with the metal surface value.

4 the environment temperature and humidity.

5 and all kinds of environment medium metal surface contact.

6 other people sweat also cause bearing corrosion, its pH value is 5~6. So in order to prevent corrosion caused by hand sweat, installation and production personnel should wear gloves, don't contact with high temperature Spherical roller bearings hand lightly.

The reasons and measures of wheel bearing the delamination damage

The reason of the delamination damage wheel bearing :
1, excessive load
2, poor installation (non linear), torque load, foreign intrusion, water.
3, poor lubrication, lubricant inappropriate bearing clearance is not appropriate.
4, the accuracy of bearing box is not good, the rigidity of bearing box uneven shaft deflection
5, rust, corrosion, abrasion and indentation (surface deformation) causes the development.
Guide roller, guide, slider, linear bearings, miniature ball bearings series of deep groove ball bearing series needle roller  bearings, thrust ball bearings
What measures to take to solve the peeling of bearings damage:
1, check the load size and Double Row Ball Slewing Bearing again using the Institute
2, improve the installation method, improved sealing device, shutdown protection.
3, the use of appropriate viscosity lubricant, improve lubrication method.
4, check the accuracy of the shaft and housing
5, check the clearance.