Hello friends on this topic,
we covered all aspects related to the bush bearing.
In which we will know what is bush bearing and its parts, material, uses, etc.
Bush Bearing is the
most important type of bearing.
A bearing can be divided into
only two categories first one is friction bearing and the second one is
antifriction bearing.
Bush bearing comes in the category of friction bearing and
always uses lubrication for reducing friction.
So without wasting time let's know what is bush bearing and its parts, material, uses.
What is Bush Bearing?
This is the simplest type
of bearing.
A circular hole is made in the block or body of this bearing where the bush is fitted, in which support is provided to the rotating shaft.
It is also known as the solid bearing.
In
this bearing, there is no rolling elements are used.
Parts and Material of Bush Bearing
There are following parts are used in bush bearing:
- Block or Body
- Bush
- Oil Hole(for lubrication)
 |
| Bush Bearing |
The body of this bearing
is usually made of cast iron (C.I.) while
the shafts are made of mild steel.
Cast iron is harder than mild steel, so when the shaft, block, or body is moving relative to the friction, the shaft starts to wear out, and due to this, the recesses of the body and shaft increase.
This causes vibrations and noise in
the shaft and eventually the shaft breaks.
To avoid this problem,
a bush is fitted in the hole of the block.
A bush is a hollow
cylinder whose outer diameter and length are equal to the hole in the body
while the inner diameter is equal to the diameter of the shaft.
The bush is hammered into the
body and fitted. Sometimes a cylindrical pin is placed between the body
and the bush in which there is no relative motion between them. The shaft
is mounted inside the bush.
The material of the bush is usually made of brass, gun metal, or any other bearing metal.
Due to the softness of this material and due to
relative motion between the shaft and
the bush, this bush wears out quickly.
When worn out, a new bush is
replaced with the old bush.
In order to reduce the friction between
the body, shaft, and the bush and to minimize wear, this bearing also provides the lubrication.
For this purpose,
an oil hole is made in the upper part of
the body and also in the bush, in which the
lubricating oil is kept on the flax and which reaches the shaft through this hole and lubricates it.
Holes are also made in
the base of the bolt to fit it on
the foundation or in the bracket.
Uses of Bush Bearing
Bush bearing is generally
used where a requirement of high speed and maximum possibility of corroding
parts.
And
also bush bearing was preferred where found a heavy load on
the shaft.
So friends here I discussed
completely bush bearing like
what is bush bearing and its parts, function, uses.
I hope you all
enjoy this topic.
FAQ Related to Bush Bearing
Can we use metal on Bush in place of bearing at high load and temp?
Yes, because bush bearing is used for high load and temperature.
Why elliptical hole is used in bush bearing?
Because it is used constraints,guide and reduce friction.
How to design bush bearing for presses to avoid seizure?
Bush bearings are based on shrink fit or press fit by using interference between bush and hole to avoid seizure.
Where the Bush bearing preferred in engine?
Bush bearing generally preferred where the heavy load on the shaft and requirement of maximum speed.
Which substance is used to make a bearing bushes?
Cast phosphorus bronze is the substance which is mostly used to make a bearing bushes.
0 Comments