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Bearing ABEC parameter strategy
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The ABEC specification is a set of specifications for the different grades used by fine bearings in the production of production. This specification is by the American Bearing Manufacturing Association (ABMA) under the Ring Bearing Engineering Association / Committee (abbreviated ABEC) The predecessor of the American Bearing Manufacturing Association (ABMA) is the Smooth Bearing Manufacturing Association.
Bearings under the ABEC system are usually called fine bearings; numbers are from 1 to 9; the higher the number; the higher the accuracy level for bearing production. (Large = narrower service belt size = more expensive price)
What does the public service belt mean?
The public service zone refers to a sequence of differences between the production and processing processes that must be accurately measured. (Editor: Simply speaking, the narrower the public service zone; the higher the accuracy of the machining. If it is not clear; I want to learn mechanical comrades to ask.)
Other grade numbering system:
ABEC is just a way to define the level of bearing public service. The International Organization for Standardization and the German Specification Arrangement (DIN) have similar specifications to measure the accuracy of bearings. In ISO and DIN systems; The smaller the value, the narrower the public service belt; the larger the number, the wider the public service belt. This is the opposite of the ABEC specification; see the corresponding table below.
ABEC ISO DIN
ABEC 1 Normal P0
ABEC 3 Class 6 P6
ABEC 5 Class 5 P5
ABEC 7 Class 4 P4
ABEC 9 Class 2 P2
abbreviation:
ABEC = ABMA system for rating ball bearing tolerances
ISO = International Standards Organization
DIN = German National Standards Organization
After the above analysis, it is not difficult to see that the norm rules the scale of the ball and the public service; it has nothing to do with the practical application of the bearing. There is no rule on the important objectives of data, seal, bearing frame, smoothness, conflict and public service; Therefore, it can be seen from the specification that the following conclusions are not necessarily correct: the bearings of the ABEC-7 specification are faster and longer than the bearings of the ABEC-1 specification; the bearings of the ABEC-7 specification must use only smooth oils without smooth grease; The bearing frame is better than brass; brass is better than steel. . . Listed above are common misconceptions about common ABEC specifications.
It is generally thought that the selection of bearings is more important than the brand; because the parameters of each manufacturer are the same, but the functions of practice are very different.
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