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Bearing Use |
9.1、Points
of attention for use bv
Roller bearing is a precise part.
Therefore it should be used carefully. No matter how high performance
the bearing is, it can not be obtained by improper use. The followings
are the points for attention of use to the bearings.
(1)
Keep clean the bearing and its surrounding areas
It is harmful to the bearing even
by tiny dust which can not be seen by human eyes. Therefore it should
always keep clean the surrounding environments in order to prevent
the bearing from dust corrosion.
(2)
Cautious use of the bearing
Scar or indentation can easily be
produced out of strong impact to the bearing in use and become the
cause of accidents. It will even be cracked or broken in severe
occasions. Therefore special caution
should be given to its use.
(3)
Use the appropriate operating tool
It is forbidden to use the current
tool in operation. Proper and appropriate tool should be adopted
then.
(4)
Be careful to the rust corrosion of the bearings
The sweat in the hands will cause
rust in operating the bearings. Therefore your hands should be cleanly
washed and dried before operation. You'd better wear gloves in doing
the work.
9.2、Installation
The bearing installation has close
relationships with the accuracy, life and performance. Therefore
the design and assembly departments should fully research into the
bearing installation.
It is better to implement installation
according to the operation standard. The items of the operation
standard are usually as follows:
(1) Clean bearing and its related
parts
(2) Check the size and finishing
conditions of the related parts
(3) Installation
(4) Examine bearings after installation
(5) Feed the lubricant
The bearing packing should be opened
shortly before installation. There is no need for cleaning to ordinary
lubricating grease lubrication, direct-filling of lubricating grease
or lubricating oil. Whereas it should use the clean oil to rinse
the instrument purpose bearing or high speed purpose bearing etc.
and get rid of the anti-rusting agent on the bearing. The bearing
easily gets rusty without rust inhibitor. Therefore special care
should be taken to such kind of the bearing.
What is more, the bearing which has
been sealed with lubricating grease can be put into direct use with
no cleaning at all.
The installation methods of the bearing
vary according to the difference in the bearing structure, matching,
condition. As it is mostly of axle rotation, the inner ring needs
interference fit. The cylindrical bore bearing is commonly pressed
in by pressing machine or most probably, it adopts the heat installation
method. The taper hole can be directly installed in the taper axle
or by sleeving.
When it has been mounted to outer
casing, usually it has excess clearance fit, the outer ring has
shrink range, it will be pressed in
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