Cylindrical Roller Bearing Higher Requirements
Shan Roller and Raceway are line contact, the radial bearing capacity is large, and it is suitable for heavy load and shock load.
Shan friction coefficient is small, suitable for high-speed, extreme speed close to deep groove ball bearings.
The Shan type and Nu type can be axially moved, Cylindrical Roller Bearing can adapt to the change of the relative position of the axle and the shell caused by the thermal expansion or installation error, and can be used as free end support. The inner ring or outer ring can be separated for easy installation and disassembly.
Shan to the shaft and seat hole processing requirements are higher, bearing installation after the inner and outer ring axis relative deflection to be tightly controlled to avoid causing contact stress concentration.
Shan double row cylindrical roller bearing with 1:12 taper in the inner hole, radial clearance can be adjusted, high radial stiffness, suitable for the spindle of machine tool.
Cylindrical roller bearing cage form
The solid cage is used for punching the steel plate cage, for high-speed bearings or for bearings that require smooth running. The glass fiber reinforced plastic cage can also be designed and provided according to the use situation and user requirements.
Cylindrical roller bearings are mainly used in large and medium-sized motors, rolling stock, machine tool spindle, internal combustion engine, generators, gas turbines, deceleration boxes, rolling mills, vibrating screens and hoisting and transporting machinery.
In order to enable cylindrical roller bearings in good conditions to maintain the proper performance and long-term use. The cylindrical roller bearing must be inspected and maintained, Cylindrical Roller Bearing and the inspection and maintenance is very important for the prevention of malfunction, and the rolling sound, vibration, temperature and lubricant of the cylindrical roller bearing should be checked in operation.
When the performance index of the cylindrical roller bearing is lower than the usage requirement, and the cylindrical roller bearings have a failure or even failure, cylindrical roller bearings Once the failure of such accidents, the machine, equipment will be stopped, Cylindrical Roller Bearing the loss of functions and other anomalies, so it is necessary to find out the cause in the short term, and take appropriate measures.
1. Rolling sound of cylindrical roller bearings
Cylindrical roller bearing noise One is generated by the cylindrical roller bearing itself, that is, the inherent noise of the cylindrical roller bearing; Cylindrical Roller Bearing the other is that the noise generated by the cylindrical roller bearing is not related to the noise of the cylindrical roller bearing itself.
Some problems can be analyzed by listening to sounds.
A noise related to the manufacture of cylindrical roller bearings: This includes the cage noise and vibrato, the cage noise mainly occurs in the spherical cylindrical roller bearings and tapered roller cylindrical roller bearings, when the cylindrical roller bearings are rotated as a result of the vibration of the cage and the impact of the cage and the rolling body will be sounded. The sound is periodic. Vibrato (all kinds of cylindrical roller bearings) is a certain frequency of sound, is due to the raceway surface has a larger ripple caused by vibration.
b) inherent noise: Raceway Sound: The raceway sound is produced by the elastic characteristics of the rolling body and the raceway, when the cylindrical roller bearing rotates, Cylindrical Roller Bearing the rolling body rolls on the raceway to make a continuous and smooth sound; abnormal rolling friction sound can be issued "creak, creak" and other uncomfortable metal friction unusual sound, lubrication is good will not make such a sound. Therefore, in general, it is not a problem, only the noise is increased before attention.
(c) Improper use of noise: for various cylindrical roller bearings exist. When a cylindrical roller bearing raceway surface or rolling body surface is bruised, pressure pits, rust, then there will be a certain period of noise and vibration. When a cylindrical roller bearing is in operation with dust intrusion, Cylindrical Roller Bearing the noise is generated. This noise is aperiodic, also accompanied by vibration, the sound size is not fixed, sometimes not.