- Hello Customer - Log in or Register!
Vibrating screen is mainly used in the production of stone, refractory materials, metallurgy, coal and other fields. Shaker cylindrical roller bearing screen box. Exciter. Suspension (or supporting devices and electric motors. Motor through V-belt, due to the imbalance exciter Luoyang Bearing Factory weight of the centrifugal force of inertia, driven exciter spindle rotation, the vibrating screen box, complete the material screening Harbin Bearing Factory.
Rolling vibration of the vibrating sieve factors.
Exciter eccentric special TIMKEN bearings quality centrifugal force generated by the eccentric shaft bending, inertia force and inertia couple generated in the operation will cause the reaction forces and tapered roller bearing vibration frequency and its eccentric will have to turn various stages of the vibration frequency, destruction of parts of the smoothly-like the Luoyang Bearing network state, resulting in the relative deflection of the bearing inner and outer rings, resulting in high-frequency vibration. Research analysis, the exciter the vibration bearings frequency and screen box elastic vibration of a first-order natural frequency will cause the the screen box elastomer strong vibration.
The shaker excitation force, resulting in under a lot of radial force, resulting in a strong vibration. Reduce vibration bearing joints first raise the rolling surface machining accuracy. The higher the accuracy, the smaller the vibration. Raceway, especially the ripples on the surface of the rolling element bearings TIMKEN the degree of vibration of bearing the greatest impact, which is due to the rolling element spin frequency is higher, the rolling element and keep the frame and the inner and outer rings with Block spherical bearing rolling surface gap relative motion will cause vibration, work surface with both inside and outside the raceway contact rolling element thrust roller bearings. rings the cage vibration generated by roughly the size relationship of 4.3.1.
Coordinate
Bearing geometric accuracy
Radial clearance
Eccentric
The outer ring of the bearing hole with the impact of the transmission of vibration, the tight tie would force the raceway deformation, increase the shape error, resulting in increased vibration model query. The outer ring (Block away from the material properties of the supporting hole, particularly rubber damping ring is placed therebetween, a loose film to produce a damping effect with the gap can be.
Radial clearance Bighorn contact ball bearings too small will make the system have a greater vibration. Shaker bearing test results show that reduce the natural frequency of the elastic system of the radial bearing, it is easy to generate resonance, and the radial clearance is too large, resulting in a larger low-frequency vibration. The impact of the late, self-aligning roller bearings mechanical force generated by a shock wave low frequency mechanical vibration. Radial clearance is too small to cause high-frequency vibration is caused by low-frequency vibration is too large rolling mill bearings. Radial clearance will make in the pass band vibration intensified. This is because in the rolling body and ferrule of the point of impact of the bearing will have a greater acceleration. Early in the impact, produces mechanical quality and shape of the object has nothing to do with the high frequency compression-way bearing wave and descendant of metal internal.
TIMKEN bearing is the main source of vibration of the vibrating screen is difficult to control, so the received thrust ball bearings radial force, vibration sieve shaker is maintained by large excitation force to work in the work process, a large deep groove ball bearings exciting force caused by the elastic vibration of the system. If poor lubrication, which in turn exacerbate friction, the radial clearance significantly will have a greater friction full complement cylindrical roller bearings to reduce excessive temperature rise, thermal expansion is too large, further increase in temperature rise.
Friction and lubrication
Vibration system, consisting of the eccentric system can be regarded as a single-degree-of-freedom system. Bearing active turntable bearing shaft and the driven shaft systems are the resonance frequency of a certain value exists, if an excitation frequency and the resonant frequency is close to the linear bearings Hygiene resonance. Further, since the eccentric presence of centrifugal force, if the speed is close to the critical value, it will generate the bending vibration of needle roller bearings, and the bending resonance occurs.
Shaker exciter, mostly eccentric shaft vibration exciter and box-type laser type vibration. The eccentric shaft vibration exciter and easy to install, but the cost is higher, and the eccentricity can not be adjusted. Box-type vibration exciter using the fan-shaped eccentric of TIMKEN bearings relative position adjustable vibrating force adjustment, so as to achieve the purpose of adjustable amplitude.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 30315DU NTN | 75 | 160 | 37 |
| 30315U NTN | 75 | 160 | 37 |