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Inspection and requirement of the sign of the rolling bearing


30th March 2010 Bearing Technology 0 Comments

In the government is energetical are laid severely, generally speaking, the bearing on the market hardly has counterfeit and shoddy products at present. By customers the masses of,while buying the bearing must inspection carefully, so as not to present the unnecessary trouble.

The the intersection of we and the intersection of bearing and the intersection of trade and the intersection of network and reputable expert give you answer, check about the intersection of rolling bearing and sign:

1The sign of the bearing is dispelled just

There are the following three kinds of sign methods that the rolling bearing stipulates, namely:

a.C. chemical law of the mechanical law b. electricity losing law

The chemical law is only applicable to the goods on trial-manufacture of small quantity; Write backlash group’s code and precision grade code troactively; And pair relevant supplement codes of many antithetical couplet bearings and marking,etc..

2Content and position of the sign

Should generally mark the bearing code on the terminal surface of one set of circles, make code and factory’s code or trade mark in year ,The three are at intervals of uniform distribution of 120 degrees, it is distributed that can also be uniform for being esthetic. But can also mark in the guard shield, keep the shelf, blocks and encloses according to the products drawing requirement, on the terminal surface of sealing or dustproof device. It should accord with the regulations of products design department of the factory to make and divide codes every year.

The effective width of terminal surface of one set of circles is smaller than 0.8mm, it indicates that allows to mark on the external diameter and on the packing article; One that is for greater than 0.8mm, can mark according to following rule:

1To the separating bearing, allow to mark the intact sign on the terminal surface of circles. In order to distinguish the datum levels of another set of circles, allow not to mark the craft sign in this set of circles on the datum level.

2To the separating bearing, must mark the intact sign on the terminal surface of each circle. But allow to mark bearing code and factory’s code or trade mark on the terminal surface of the one of these circle at intervals of 180 degrees .

3When the bearings of several types utilize the same set of circle, can mark the codes of these bearings on the terminal surface of this set of circles, or add the sign with the chemical law.

[Example ] bearing 627 and 618 can mark ” 627- 618 ” on the terminal surface of outer lane while utilizing the same outer lane .

[When example ] bearing NU2C4, NJ204 and RNU204 utilizes the same outer lane, can mark ” NU-NJ-RNU204 ” on the terminal surface of outer lane ,Common the intersection of part and ” the 204 ” can use the mechanical law sign among them.

3It is high to mark script and word

The script should accord with the regulations of products design department of the factory. The word is chosen according to the following height high: 0. 5,0. 7,1,1. 2,1. 5,2,2. 5,3,4,5mm. If necessary, can according to the regulation of products drawing, the same every part of bearing can adopt different script of size, its height should select two neighbouring specifications each other for use as much as possible.

4Requirement of the sign

1It must be complete, intact to mark.

2The writing must be corrected, clear; The lines are even in conformity with thickness. There should be certain depth in the writing. To the electricity losing law; Word higher primary school, on equal 1mm, word its can’t be less than 0.003mm while being dark; Word tall and big to less than or equal to 2.5mm on lmm, word its can’t be less than 0.005mm while being dark; Word tall and big on 2.5mm, word its can’t be less than 0.01mm while being dark.

3It mark centre it is round diameter,in equal division and script,etc. can’t estimate by visible skew.

4Indicate the script, symbol shape, word are wide, the distance should accord with the regulations of products design department of the factory between width of lines and word.

5Surface of bearing part drawing and outside sign that relevant document allows Xu, there can’t be other signs.

6When subscriber have special requirement, can consult with factory, adopt necessary method of indicating and mark content according to supplementary technical requirement that consult.










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