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Installation of bearing
Whether the bearing are installed correctly or not influences precision, life, and performance of bearing.
Thus, design and assembly department must fully research installation of bearing. Hopefully you can install bearing according to operation or work standard.
Operation or work standard items are usually as below
<1>clean bearing and connected components
<2>check dimensions and finish machining of connected components
<3> install
<4>check after installation
<5> lubricant supply
We hope you don¡¯t open the package of bearing before you install it.
Common grease lubricant needn¡¯t cleaning, and you can directly fill grease.
Lubricating oil lubricant commonly needn¡¯t clean, either. However, for apparatus or high speed bearing application etc. you need to use clear oil to clean rust inhibitor on the bearing.
With rust inhibitor cleaned, bearing can easily get rusty. So don¡¯t lay it aside without paying attention to.
Moreover, if bearing has been sealed with grease, it can be directly used.
Different structures, cooperations and requirements ask for different installation methods of bearing. Generally, internal ring needs interference fit because in most cases it is rotation of axes.
Bearing with cylindrical bore often use press machine to impress or use shrinkage fit.
In taper-bored occasion, directly fix on taper-bored spindle or use sleeve to install.
Fixing on outer cover is often combined with lash. If external ring has interference, often use press machine to impress or shrink fit, which means fix after it cools.
Use ice as freezing mixture. In shrink fit occasion, the moisture in the air will condense on the surface of bearing.
Thus, it is needed to take appropriate antitrust action.
Use bearing
Notes of use:
Rolling bearing is precision instrument. The application should be cautious accordingly.
No matter how high the performance of bearing is, if it not be used appropriately, you cannot approach the desired high performance.
The notes of bearing are as bellowing.
<1> keep bearing and its environment clean
Even the small dust the naked eye cannot see can also bring bad influence to bearing. Thus, keep the environment clean and free from dust intrusions.
<2>Cautious use
Givestrong impact to bearing when it is running because it can result to bruise and dent. In worse situation, it will generate crack, fracture. So, you must be careful.
<3> Using appropriate operating tool
Avoid using existing tool and must use appropriate tool.
<4>. Taking care bearing¡¯s corrosion
When operate the bearing, the perspiration on your hand can be the reason for bearing¡¯s corrosion. So you must pay attention to using dry and clean hands when operating. You¡®d better possibly wear gloves.
Bearing¡¯s hurt and countermeasure
Bearing¡¯s Hurt: In most case, if you correctly operate bearing, it can be used as long as its life. But there can be accidental case that may hurt bearing too early and make it not durable. This case, corresponding to fatigue life, is so-called false or accidental quality using limit. It mainly results from carelessness in installation, use, lubrication, as well as lack of analysis on the influence coming from outside invasion to axis and out cover.
Referring to bearing¡¯s hurt state, ferrule of bearing roller and extrusion hurt of apron can be the reason. Lacking lubricant, not appropriation, deficiency of fabrication of oil apply, intrusion of foreign matter, installation error of bearing , too large curving of bearing can also be the combined reason.
Therefore, only checking bearing hurt cannot find out the real reason. But if you know bearing¡®s setting up, service conditions, surrounding structure and the situation before and after the accident, combined with bearing¡¯s hurt state and several reasons, you can prevent the same accident from happening again.
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Quality£º