Radial Internal Clearance Range of Full Complement Cylindrical Roller Bearings

Full Complement Cylindrical Roller Bearings can be ordered according to the designation for radial inner clearance in either of the following two tables 'Timken R Series Clearance' or 'ISO/ABMA C Series Clearance'. If there are special requirements, this type of bearing can also be ordered with non-standard values. The radial inner clearance values ​​are listed in the following tables according to the size of the inner hole. The clearance required for a given application is related to the accuracy expected to be obtained, the rolling speed of the bearing, and the bearing used. The specification or C0 clearance adopted by most places of use. In general, larger clearance reduces the load area of ​​the bearing, increases very high roller loads and reduces bearing life expectancy. There are many types of full complement cylindrical roller bearings, which are identified by layout, including N, NF, NJ, NU, NUP, NCL, RN and RNU types. According to the load capacity, there are ordinary and reinforced cylindrical roller bearings. The outer dimensions of the reinforced cylindrical roller bearing are the same as the ordinary type, but the diameter, length and number of the rollers have increased, so the load can be increased. According to the number of rows of cylindrical rollers, there are single-row and multi-row cylindrical roller bearings. Cylindrical roller bearings are divided into four-row cylindrical rollers and double-row cylindrical rollers. The radial bearing capacity is high, but it cannot bear axial force. The radial size is small and the limit speed is high. Because the inner ring has no ribs, it can be separated. Install the inner and outer ring assemblies (with complete set of rollers and cages). This kind of bearing has the advantages of large radial bearing capacity, high rotational accuracy and convenient installation and disassembly for various cold and hot rolling mills with frequent roll replacement. Suitable for all kinds of hot and cold rolling mills, blanking mills and other rolling mills, full complement cylindrical roller bearing manufacturers should pay attention to the following points: 1. According to the working conditions of the bearing (including load direction and load type, Speed, lubrication method, coaxiality requirements, positioning or non-positioning, installation and maintenance conditions, ambient temperature, etc.), select the basic type, grade and clearance of the bearing; 2. According to the working conditions, stress conditions and life of the bearing If required, determine the bearing model by calculation, or select the bearing model according to the use requirements, and then check the life; 3. Check the rated load and limit speed of the selected bearing. The main factors to consider when choosing a bearing are the limit speed, required good life and load capacity, and other factors help to determine the bearing type, layout, size, and the design of the grade and clearance requirements.

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