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Rolling bearing marking specification

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1. Scope of application This specification applies to the marking of various types of bearings.
2 . Marking method 2. 1 Mechanical method 2. 2 Electro-erosion method 2. 3 Chemical method: This method is only applicable to a small number of prototypes, rewriting the gap group code and precision grade code, and the relevant compensation code for the multi-joint bearing. And tags, etc.
3 . The content and orientation of the mark are usually on the end face of the ferrule; the bearing code, the date of manufacture, and the code (or trademark) of the manufacturer should be marked; the three are evenly spread at intervals of 120 degrees; they can be evenly distributed for beautiful and beautiful. The requirements are marked on the end faces of the shield, cage, retaining ring, sealing or dustproof equipment. The year of manufacture and code should conform to the rules of the design part of the manufacturer. The useful width of the end face of the ferrule is less than 0.8 mm; On the outer diameter and on the package.
3.1 Regarding the non-detachable bearing; it is allowed to be on the end face of a ferrule; marked with a good mark. It is the reference plane of the difference of the other ring; it is allowed to mark the process mark on the non-reference surface of the ferrule.
3.2 Pairs of separate bearings; it is necessary to be on the end face of each ferrule; marked with a good mark; but it is also allowed to be on the end face of one of the ferrules; the bearing code and the manufacturer code (or trademark) are marked 180 degrees apart ).
3.3 When several types of bearings use the same ferrule; can be on the end face of the ferrule; mark the code of these bearings; perhaps chemically.
4. The markup font and the word height font should conform to the rules of the manufacturer's product design.
The word height is selected according to the following heights.
0. 5,0. 7,1,1. 2,1. 5,2,2. 5,3,4,5mm
If necessary; according to the rules of the product drawings; the same bearing parts can be used with different sizes of fonts; the height should be able to use two standards near each other.
5 . Marking requirements 5.1 Markings need to be complete and intact.
5. 2 The handwriting is necessary to be closed and clear, and the lines should be uniform in thickness.
Handwriting should have a certain depth. For the electric erosion method: the word height is less than or equal to 1mm; its word depth must not be less than 0. 003mm; the word height is greater than 1mm but less than or equal to 2. 5mm, its word depth must not be less than 0. 005mm; More than 2. 5mm; its word depth shall not be less than 0. 01mm.
5.3 Marking the diameter of the middle circle, aliquots and fonts, etc. shall not have a visually visible offset.
5.4 Marking fonts, symbol shapes, word widths, line widths, and inter-word spacing should conform to the rules of the manufacturer's product design.
5. 5 The appearance of the bearing parts shall be in addition to the markings approved by the drawings and related documents; there shall be no other markings.
5.6 When the subscriber has special needs; can negotiate with the manufacturer; select the required marking method and mark content according to the skill requirements of the negotiation.

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