Cross roller bearing rotates the causes of noise analysis

The introduction of Cross roller bearing
Cross roller bearing is a kind of special type bearing division of inner ring and outer ring spinning.By integral inner ring or outer ring, after loading roller and retainer interval, and cross roller bearing ring fixed together, in order to prevent the separation of each other, so the installation of cross roller bearing ring when the operation is simple.Because of the roller for cross array, so only 1 set of cross roller bearing ring can bear the load of every direction, compared with the traditional model, rigid 3 ~ 4 times.At the same time, because of the cross roller bearing inner ring or outer ring is two integral structure, bearing clearance can be adjusted, even if be preloading, also can get high precision rotary motion.And, as a result of its special structure, often used as a joint bearing in the industrial robot.

The causes of noise analysis
Cross roller bearing rotates to produce noise, this basically is long the length of the roller, the roller end face and cross roller bearing seat up and down the rolling friction and noise.Under normal circumstances, cross roller bearing friction roller not race, if the length of the roller long, the noise due to friction.If the length of the roller long too much, can make the two end face pressure roller on the rolling path, cross roller bearing rotating difficulties.Further adjustment, which is generated by the friction washer raceway, mainly assembly adjusting washers aperture is greater than the bolt diameter.When lack of bolt pre-tightening force, adjust the washer to flee raceway and roller friction fillet.
1, Small axial clearance.
Cross roller bearing mounting datum roughness should be less than its axial clearance, otherwise, the assembly after the bolt tightening, due to the rigidity of cross roller bearing is small, uneven deformation will occur with installation datum.Cause the roller in rough rolling on turning.When the part deformation is greater than or close to axial clearance, can produce noise, or turn the difficult.

2, Cross roller bearing installation datum uneven or raceway surface distortion.
Cross roller bearing mounting datum roughness should be less than its axial clearance, otherwise, the assembly after the bolt tightening, due to the rigidity of cross roller bearing is small, uneven deformation will occur with installation datum.Cause the roller in rough rolling on turning.When the part deformation is greater than or close to axial clearance, can produce noise, or turn the difficult.
Supplier
BMB Bearings ia a precision bearing enterprise specializing in the production of double row angular contact ball bearings, double row deep groove ball bearings, and single row angular contact ball bearings. The company is a end bearings manufacturer enterprise producing double row angular contact ball bearings in China. Its models cover 3200 series, 3300 series, 3000 series, 3800 series, 3900 series, etc. The product accuracy grades are: P0, P6, P5, P4, and the products are widely applicable.The company also maintains an extensive inventory of superior roller bearings, ball bearings, Deep Groove Ball Bearings, Selfaligning ball bearing, Angular Contact Ball Bearings, Cross Roller Bearings and much more.