Bearing failure analysis method (1)

Source: China Bearing Network Time: 2017-10-22

/*250*250 was created on 2017/12/25*/ var cpro_id = 'u3171089';

In the process of dissecting bearing failures; there are often many confusing appearances; the results of various tests may be opposite each other or the first time is unclear; this requires repeated trials and certifications; to obtain a satisfactory basis or counter-evidence. Proper analysis of methods, procedures, processes; ability to find the real cause of failure.
Under normal conditions, the analysis of bearing failure can be roughly divided into the following three processes: collection of ineffective materials and scenery materials, microscopic observation of microscopic observations and microscopic analysis.
1. The collection of ineffective materials and scenery materials collects as many parts and fragments as possible of the ineffective things. The operating conditions, application process and production quality of the failed bearings are fully known. The specific contents include:
(1) The drawing conditions of the bearing such as the load, rotation speed and working condition of the main engine.
(2) Failure status of bearings and other parts of their associated parts; type of bearing failure.
(3) Recording of the bearing operation of the bearing. Whether there is abnormal operation during the operation of the operation.
(4) Whether the actual load accepted in the bearing operation can match the original depiction.
(5) The actual speed of bearing operation and the frequency of different speeds.
(6) Can there be a sharp increase in temperature or smoke when it fails? Can there be noise and oscillation?
(7) Whether there is corrosive medium in the working environment; whether there is any special oxidation color or other staining between the bearing and the journal.
(8) Description of the bearing device (including the re-inspection status of the bearing standard in the front of the device); original bearing clearance, device and alignment; how rigid the bearing seat and the base; whether the device can be abnormal.
(9) Whether the bearing operation can have thermal expansion and power transmission changes.
(10) The smooth condition of the bearing; including the trademark, composition, color, viscosity, impurity content, filtration, replacement and supply status of the smoothing agent; and collecting the sediment.
(11) Whether the material selection of the bearing can be correct; whether the quality of the material can meet the requirements of the relevant specifications or drawings.
(12) Whether the manufacturing process of the bearing can be normal; whether the appearance can be plastically deformed; whether there is any external grinding burn.
(13) Recording of the correction and protection of the failed bearing.
(14) Failure conditions of the same batch or similar bearings.
In the collection of practical scenery materials; it is difficult to fully satisfy the above requirements. But the more materials are collected; it will undoubtedly be more conducive to the correct profiling.

Recommend to friends comments close window

Bearing related knowledge

NSK bearing block shows cracking failure analysis why the bearing will make a movement (sound)
The layout and characteristics of the slewing bearing, how to distinguish the fake bearing imported bearing smooth and small common sense

This article links to http://
Please indicate the bearing network http://

Previous:The characteristics of various types of adherents Next:The key skills in bearing production

PE Pipe Fitting Socket Fusion

PE is polyethylene, a basical plastic, has excellent resistance to most of the characteristics of life and industrial chemicals. there are MDPE and HDPE pipes by class of SDR11 and SDR17 series according to the wall thickness. PE pipe has the advantages of simple construction process, a certain degree of flexibility, which is not used for anti-corrosion treatment, will save a lot of procedures. Ningbo RMI Plastic Co.,Ltd supply PE Pipe Fitting Socket Fusion for water supply.

Ningbo RMI Plastic Co.,Ltd offer PE Pipe Fitting Socket Fusion with specification:

Size:20mm to 110mm
Connection: socket fusion
Standard: ISO
Pressure rate: PN10
Items: Coupling, elbow, tee, reducer, flange, stop valve, reducing tee, female coupling, made adaptor,Quick Coupler,union, end cap.

PEÂ PipeÂ FittingÂ SocketÂ Fusion,HDPEÂ PipeÂ Fittings,PE Socket Fittings PN10,PE Fittings,HDPE Pipe PN10, HDPE Fittings

Ningbo RMI Plastic Co.,Ltd , https://www.rmiplast.com