Needle roller bearing to prevent what are the measures of aircraft noise

Needle roller bearing to prevent the measures of aircraft noise is as follows: a. To make maintains a stable orbit, should try to adopt ring guide way and note to guide the sufficient lubrication, the tapered roller bearing structure of the high speed working conditions to improve, keeping the L shape of roller guide frame to ring guard guide Z type cage. b。 Bearing high speed rotates, pocket large clearance of bearing bracket will be its vibration amplitude is greater than small cage pocket hole clearance vibration amplitude, so the pocket hole clearance values are particularly important. c。 Attention should be paid to minimize radial clearance. d。 Try to improve the retention value manufacturing precision, surface quality of the cage, is beneficial to reduce the rolling element and cage collision or friction noise. e. Actively adopt advanced cleaning technology for spare parts and products of thorough cleaning, effectively improve the cleanliness of bearing. 5. Rolling body by vibration when the bearing under the effect of radial load, its internal only several rolling element load bearing, due to the elastic contact with ring of 'spring' of supporting roller in periodic vibration produced by radial load line, the rotation center so move the vertical or horizontal direction, at the same time cause noise. This kind of vibration is called vibrating roller, especially in the low speed performance is more apparent. And its amplitude and bearing type, radial load, radial clearance and rolling element number. If the amplitude is small, usually large amplitude when the formation damage, reduce the radial clearance is often used for this or applying proper pre-load to reduce.