Have you ever noted the bearing in the slider block? How much do you know about it?Compare with a big machine, it plays a vital part in the whole using.
What Is Bearing ?
A bearing is a
machine element that constrains relative motion to only the desired motion,and
reduces friction between moving parts.When it produces relative movement each
other with other parts on the shaft, bearing can be used to reduce the friction
coefficient and maintain fixed axis center position. By the different
frictional properties of motion element, bearing can be divided into rolling
bearing and sliding bearing.
Bearing Type
While according to
the difference of its function and design,there are many types of bearing.
Generally include: Needle bearings, Self-aligning ball bearings, Deep-groove
ball bearings, Spherical roller bearings, Thrust bearings, Plummer blocks,
Knuckle bearings,Combination bearings, Rolling mill bearings and so on. Different
bearings have different function, but they have played a vital role in various
mechanical equipment.What’s more, different type of bearing and quality, there
is a difference of a couple of dollars in prices (That will cause different
cost price of camera slider).
Type Symbol
A complete bearing symbol consists of the
basic symbal and one or more complementary symbol.Basic symbal is used to
represent the types of bearings,the basic design of bearings,the appearance of
bearing size. While complementary symbol refers to the bearing parts,and the
different structure of basic design or other variant characteristics.
0
Double row angular
contact bearings
1
Self-aligning ball
bearings
2
Spherical roller
bearings ,
thrust self-aligning roller bearings
3
Tapered roller
bearings
4
Doulble row groove ball bearings
5
Thrust bearings
6
Deep-groove ball
bearings
7
Angular contact ball bearings
8
Cylindrical roller thrust bearings
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