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NTN bearing type marked
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The basic type is the type of the NTN bearing; the code of the primary content such as the primary scale; consists of the bearing series code; the inner diameter code and the contact angle code. The subsidy code consists of the prefix code (Prefix) and the subsequent subsidy code (Suffix); Mark the internal clearance of the bearing and other standards.
The first is the rear number; the front number and the basic number are some. The rear number is the information of the NTN bearing, the public service and the layout in English and Arabic numerals. The NTN bearing type is only used under normal circumstances. The type is indicated. The radical type is also composed of three parts; respectively: type code; scale code and inner diameter code. The front number indicates some other parts of the bearing; for example: sub-parts; marked in English.
The type of the rolling bearing is the first; the rolling bearing is taken as an example; it is its front number, rear number, and fundamental number.
NO1. The front number is in practice; the type of roll bearing used is many; the number is marked relatively messy. The front number of the NTN bearing is marked as a sub-assembly; it is marked in English. For example, K is used to represent the roll and hold of the NTN bearing. Frame assembly. NTN roll bearing specific analysis can be found in the ntn thrust roll bearing ntn cone rolling bearing.
NO2. The rear number of the rear number bearing is the bearing information, public service and layout of the bearing in English and Arabic numerals. The commonly used bearing radial clearance series is divided into 1 group, 2 groups and other 6 groups. From high-end to primary, it is divided into six levels; the internal layout number is a different internal layout with the same code for the same type of bearing.
NO3. The fundamental number of the fundamental number indicates the width series, inner diameter, diameter series and type of NTN bearing. The ntn bearing type code is marked with the fifth digit from the right code (for cylindrical roller bearings and needle bearings, etc.), bearing The inner diameter is indicated by the first digit from the right code to the right. The change in the outer diameter and width of the bearing with the same layout and the same inner diameter is indicated by the third digit from the right code to the right. For example; about the radial bearing and the radial thrust bearing; 0, 1 marked the special light series, the bearing layout, the inner diameter and the diameter series are the same. The series of bearing width changes are marked with the fourth digit from the right code. In 1990; China decided to amend the original rolling bearing code method; National standards have been drawn up.
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