Quality of rolling bearing in the process of use due to itself and external conditions, bearing capacity, rotational accuracy and wear resistance to change. When the timken bearing performance index is lower than the use requirements and does not work, bearing failure and even failure, bearing failure after the accident, machine, device will stop, seems to be all sorts of anomalies, such as the reasons for the loss of function therefore need to find out in a short time, and take corresponding measures.
Bearing intact maintain its performance and use for a long time. Must be carried out on the bearing inspection and maintenance, inspection and maintenance, in order to prevent the failure is very important, in the work review rolling noise, vibration, bearing temperature and lubricants.
ron, Ken bearings rolling bearing noise is a kind of itself, namely bearing inherent noise; Another reason is that the bearing noise after installation, not the noise of the bearing itself. By listening to sounds can be analyzed some problems. Inherent noise: a) said: "all kinds of bearings and rolling friction (cylindrical roller bearing) is a rolling bearing natural voice." Ditch the elasticity of the rolling element and raceway contact, when bearing rotating roller rolling mill and the sound of a continuous and smooth; Abnormal sound of rolling friction can issue "funny, funny" abnormal uncomfortable metal friction, good lubrication, won't make such a sound. So in general is not a problem, only need to pay attention to increase the noise. B) bearing manufacturing related noise: this includes keeping aircraft noise and tremolo, maintaining a noise occurs mainly in ball bearings and tapered roller bearings, bearing rotates because of the influence of the vibration of the cage, roller and cage. Sound is cyclical. Vibrato (bearing), have a voice frequency is due to the big ditch surface waviness caused by vibration. C) caused by improper use of the existence of noise. All kinds of bearings of rolling bearing raceway surface or body damage, pit, rust, then you will have certain periodic noise and vibration. When bearing dust invasion operation can produce noise pollution. This sounds also regularly with the vibration noise is not fixed, sometimes not.
The first thing to consider when choosing cooperation, ring bearing type. Usually ring bearing type has the following three conditions:
Synthesis of radial load ACTS on the ring, ring groove, and the shaft or the bearing relative area, this load is called fixed load. Fixed load characteristic is radial load vector synthesis and relatively static ring. Ring radial load and synthesis will be fixed at the same speed or load. Ring can choose loose fit under constant load.
2 rotating load
Synthesis of radial load on the ring, along the circumferential direction, the progress of all parts, in which load called rotating load.
Rotating load characteristic is a synthesis of radial load vector rotation relative to the ring. Rotating load has the following three conditions:
(1) fixed load direction, rotating ring.
(2) load vector rotating ring;
(3) the load vector and ring at different rotate speed.
3 vibration load and variable load
Sometimes the direction of the load and size cannot be determined accurately, for example, in the high-speed rotating machinery, in addition to the direction of the rotor weight under fixed load, and rotating load caused by uneven quality, if the load is much bigger than fixed load rotating, comprehensive load still rotating load; If rotating load than fixed load, load of synthetic vibration load. Regardless of the rotation or vibration load, its size and the direction changing. Variable under the condition of the work, some ring load as much as possible but rotating load, but fixed load and vibration load. The load is called variable load.
Get the using fault TIMKEN bearing failure to the attention of the method
Rolling bearing in use process because of itself quality and external conditions, the bearing capacity, rotational accuracy and wear-resisting performance will change. When the TIMKEN bearing performance index is lower than the use requirement and when not working, bearing fault even failure occurs, bearing in the event of failure after accidents, machinery, equipment will halt, appear to wait for all sorts of anomalies, function loss causes were therefore need to find out in a short time, and take corresponding measures.
For the bearing in good condition to maintain its performance and the use For a long time. Must be carried out on the bearing inspection and maintenance, inspection and maintenance to prevent failure is very important, in the work to review the rolling noise, vibration, temperature of bearing and lubricant.
The rolling bearing noise is a kind of TIMKEN bearing itself, namely bearing The inherent noise; After another is bearing installed to produce noise, has nothing to do with the noise of the bearing itself. By listening to the sound can analyze some problems. A) inherent noise: roll say "all kinds of bearings and rolling friction sound (cylindrical roller bearing) is the voice of A rolling bearing inherent." raceway is By the elastic properties of the rolling element and raceway contact, when bearing rotating roller rolling on the rolling and send out the voice of A continuous and smooth; Abnormal sound of rolling friction can be issued a "tickle, tickle" uncomfortable metal friction abnormal sound, good lubrication, won't make such a sound. So in general is not a problem, only need to pay attention to increase noise after. B) bearing manufacturing related noise: this includes keeping aircraft noise and tremolo, maintains a noise occurs mainly in ball bearings and tapered roller bearings, when bearing rotation due to the vibration of the cage with roller and cage impact would sound. The sound is cyclical. Vibrato (all kinds of bearing), there is a sound frequency is due to large raceway surface waviness caused by vibration. C) noise caused by the improper use of exist. For all kinds of bearing as the rolling bearing raceway surface or body surface is damaged, pit, rust, then you will have certain periodic noise and vibration. When bearing dust intrusion in operation can produce contamination noise. This noise is periodically also accompanied by the sound vibration is not fixed, sometimes no.
The first consideration when choosing cooperate, ring load bearing type. Usually The ring load bearing type from The following three The conditions:
1 the fixed load SKF Bearing Introduction http://www.nskbearing-china.com/Aboutus/ .
The short of The radial load acting on The ring, The ring groove on The local area, and The shaft or The relative area of The bearing, this load is called fixed load. The fixed load characteristic is synthesized radial load vector and The relative static ring. The ring radial load and short are not turning turning are fixed at The same speed or load. Under fixed load ring can choose loose fit.
2 rotating load
Short of radial load acting on the ring, race along circumferential direction, progressive, by all parts under this load is called rotating load.
Rtating the load characteristic is synthesized radial load vector rotate relative to the ring, Rotating the load from the following three the conditions:
(1) fixed load direction, ring rotation.
(2) the load vector rotation, ring stationary;
(3) the load vector and ring to rotate at speeds.
3 oscillating load and variable load
At the direction of the load and the size can 't determine precisely, for example in high - speed rotating machinery, in addition to the direction of the rotor weight under fixed load, and rotating load under caused by uneven quality, if the load is much bigger than the fixed load rotation, the short load is still rotating load; And if the rotating load than fixed load, the synthetic load for oscillating load. The chopped of rotating load or oscillating load, its size And direction are constantly changing. In variable work condition, some ring by the load when possible but rotating load, but the fixed load, And the oscillating load. This load is called variable load.