Using factor mainly refers to the installation and adjustment, use and maintenance, repair and other maintenance meets the technical requirements. According cross roller bearing installation, use, maintenance, maintenance of the technical requirements for operation of the bearings to bear the load, speed, temperature, vibration, noise and lubrication condition monitoring and inspection, abnormal immediately find reasons to adjust bring it back to normal. Installation conditions are the primary factors that one of the factors bearing is often caused by improper installation package bearing force between the various parts of the state change, bearing in abnormal state of operation and early end of life
Internal factors mainly refers to the structural design, quality manufacturing processes and materials of the three factors that determine the quality of the bearing.
cross roller bearing materials metallurgical quality affect cross roller bearings early failure of the main factors. As metallurgical techniques (such as bearing steel vacuum degassing, etc.) progress, improve the quality of raw materials. Raw material quality factors in bearing failure analysis in the proportion has decreased significantly, but it is still bearing failure is one of the main factors. Appropriateness of the selection is still bearing failure analysis must be considered.
Crossed roller bearings are generally manufactured through forging, heat treatment, turning, grinding and assembly of multi-channel processing. The reasonableness of the processing technology, advanced, will also affect the stability of the bearing life. Which affect the quality of the finished bearing heat treatment and grinding processes, often with bearing failure have a more direct relationship. In recent years, the working surface of the bearing metamorphic layer studies show that the quality of the grinding process and is closely related to the bearing surface.
Cross roller bearing life analysis of the main task is based on a lot of background material, analysis of data and failure modes, find the cause of bearing failure of the main factors in order to have targeted improvements to extend bearing service period, to avoid bearing sudden occurrence of early failure.
2013年7月29日星期一
Thin section crossed roller bearings rust causes and preventive measures
Thin section crossed roller bearings rust causes and preventive measures
Thin section crossed roller bearing corrosion, there are two main reasons: First, the bearing itself metal corrosion, corrosion of two human factors.
Bearing itself accounted for the vast proportion of metal corrosion, because the work needs, many times this is unavoidable. Human contact bearing, the hand can cause bearing corrosion sweat, sweat contact bearings mainly in its surface sweat membrane interactions lead to corrosion electrochemical reaction will occur, but this is to be avoided, such as to bring professional pick Part of gloves and other tools.
Thin section crossed roller bearings cause metal corrosion which is mainly reflected in the following points:
1, the surface finish;
2, the metal materials, chemical structure and composition;
3, the metal surface of the component and the PH value of the solution;
4, the environmental media;
5, the ambient humidity and temperature.
Thin section cross roller bearing prevent corrosion measures are mainly: to maintain the bearing surfaces are clean, and the cleaning must use the appropriate method. General chemical treatment cleaning, mechanical cleaning and a solvent cleaning methods. Clean the surface after drying compressed air available, you can also use 120 ~ 170 ℃ the drier, and then wipe dry with a clean gauze. Finally, the bearings coated with anti-rust oil, as follows:
Using the immersion method, the film thickness can be controlled by anti-rust oil temperature or viscosity to achieve. Some small items using immersion in rust oils, allowed surface adhesion layer of anti-rust oil; Dena Man Mr. Gao
Using a spray method, the object can not be taken to some large rust oiled soaking method for thin-layer anti-rust oil or solvent dilution type rust preventive oil, but pay attention to labor and fire protection measures;
Use brushing, brushing not only to avoid the accumulation does not produce, but also to prevent leakage caused by paint. For non-immersion or spray with some of the special shape of the products or outdoor construction equipment.
Thin section crossed roller bearing corrosion, there are two main reasons: First, the bearing itself metal corrosion, corrosion of two human factors.
Bearing itself accounted for the vast proportion of metal corrosion, because the work needs, many times this is unavoidable. Human contact bearing, the hand can cause bearing corrosion sweat, sweat contact bearings mainly in its surface sweat membrane interactions lead to corrosion electrochemical reaction will occur, but this is to be avoided, such as to bring professional pick Part of gloves and other tools.
Thin section crossed roller bearings cause metal corrosion which is mainly reflected in the following points:
1, the surface finish;
2, the metal materials, chemical structure and composition;
3, the metal surface of the component and the PH value of the solution;
4, the environmental media;
5, the ambient humidity and temperature.
Thin section cross roller bearing prevent corrosion measures are mainly: to maintain the bearing surfaces are clean, and the cleaning must use the appropriate method. General chemical treatment cleaning, mechanical cleaning and a solvent cleaning methods. Clean the surface after drying compressed air available, you can also use 120 ~ 170 ℃ the drier, and then wipe dry with a clean gauze. Finally, the bearings coated with anti-rust oil, as follows:
Using the immersion method, the film thickness can be controlled by anti-rust oil temperature or viscosity to achieve. Some small items using immersion in rust oils, allowed surface adhesion layer of anti-rust oil; Dena Man Mr. Gao
Using a spray method, the object can not be taken to some large rust oiled soaking method for thin-layer anti-rust oil or solvent dilution type rust preventive oil, but pay attention to labor and fire protection measures;
Use brushing, brushing not only to avoid the accumulation does not produce, but also to prevent leakage caused by paint. For non-immersion or spray with some of the special shape of the products or outdoor construction equipment.
2013年7月24日星期三
Bearing Noise Remedy
Bearing materials metallurgical quality affect the bearing early failure of the main factors. Followed by metallurgy technology (such as bearing steel vacuum degassing, etc.) to improve, improve the quality of raw materials. Raw material quality factors in the overall eccentric bearing failure analysis in the proportion has decreased significantly, but it is still bearing failure is one of the main factors. Appropriateness of the selection is still bearing failure analysis of the factors that must be considered.
The main task of bearing failure analysis is based on a lot of background material, analysis of data and failure modes, find the cause of failure of the main factors roller bearing for targeted improvement measures are proposed to extend the self-aligning roller bearing service period, to avoid occurrence of unexpected early bearing failure.
Bearing vibration effects on the bearing failure is significant. Example: peeling, dents, rust, cracks, wear, etc. will be in ball roller bearing vibration detection reflected so through the use of special overall eccentric bearing vibration measuring devices (frequency analyzer and vibration instrument, etc.) can measure the size of the vibration frequency distribution can be inferred by the details of the abnormal vibration of the measured values due to the use of INA Bearing premise or sensor mounting location is different for each machine so requires prior analysis and comparison of the measured values determined after judgment scales.
1, reason: overall eccentric bearing low precision approach: use specified levels of precision bearings
2 reasons: Spindle bore different heart bent or box method: Fix spindle or cabinet
3 reasons: belt too tight: Adjust the belt so that the appropriate tightness
4 reasons: poor lubrication Methods: provide grade lubricating material and properly cleaned
5 reasons: the low quality assembly methods: improving the quality of assembly
6, reason: bearing housing laps: Replace worn bearings and related components
7, the axial force is too large Methods: cleaning, alignment ring seals the gap between the requirements of 0.2 ~ 0.3mm, correct impeller balance hole diameter and the checksum value of static equilibrium
The main task of bearing failure analysis is based on a lot of background material, analysis of data and failure modes, find the cause of failure of the main factors roller bearing for targeted improvement measures are proposed to extend the self-aligning roller bearing service period, to avoid occurrence of unexpected early bearing failure.
Bearing vibration effects on the bearing failure is significant. Example: peeling, dents, rust, cracks, wear, etc. will be in ball roller bearing vibration detection reflected so through the use of special overall eccentric bearing vibration measuring devices (frequency analyzer and vibration instrument, etc.) can measure the size of the vibration frequency distribution can be inferred by the details of the abnormal vibration of the measured values due to the use of INA Bearing premise or sensor mounting location is different for each machine so requires prior analysis and comparison of the measured values determined after judgment scales.
1, reason: overall eccentric bearing low precision approach: use specified levels of precision bearings
2 reasons: Spindle bore different heart bent or box method: Fix spindle or cabinet
3 reasons: belt too tight: Adjust the belt so that the appropriate tightness
4 reasons: poor lubrication Methods: provide grade lubricating material and properly cleaned
5 reasons: the low quality assembly methods: improving the quality of assembly
6, reason: bearing housing laps: Replace worn bearings and related components
7, the axial force is too large Methods: cleaning, alignment ring seals the gap between the requirements of 0.2 ~ 0.3mm, correct impeller balance hole diameter and the checksum value of static equilibrium
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