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Bearing function and use
Source: China Bearing Network Time: 2017-10-24
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Self-aligning ball bearing Spherical roller bearing between the inner ring with two raceways and the outer ring with spherical race; a bearing with a drum roller. The middle of the curvature of the outer raceway surface is common with the bearing; Therefore, it has the same self-aligning function as the active self-aligning ball bearing. When the shaft and the outer casing are deflected, it can actively adjust the load and the axial load in two directions. The radial load can be large; it is suitable for heavy load and impact load. The inner diameter of the inner ring is the bearing of the tapered hole; it can be directly installed. Or use the tightening sleeve and the unpacking device on the cylindrical shaft. The frame is adhered to the steel plate stamping frame, the polyamide forming frame and the copper alloy car system. frame.
Needle roller bearing solid needle roller bearing has the same layout as the inner ring bearing of the NU type cylindrical roller bearing; but because of the selection of the needle roller; the volume can be reduced. 15. Satay broken 蚋 晌 晌 晌 谌χ岢 谌χ岢The diarrhea shows that the group is trapped and smashed.
The thrust needle roller bearing is made up of a raceway ring and a needle roller and a bracket assembly; it can be combined with a thin rolling ring (W) for stamping or a thick raceway (WS) for cutting. The type bearing is an integral type bearing consisting of a rolling ring and a needle roller and a holding frame assembly. It can accept one-way axial load of this type of bearing. It takes up space.éœ¾æŽ ç‰’æ… ç‰’æ… ç‰’æ… ç‰’æ… èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§ èŒæ¦§
Tapered Roller Bearings This type of bearing is equipped with a truncated roller; the roller is guided by the large rib of the inner ring. The poles of the conical surfaces of the inner ring raceway surface, the outer ring raceway surface and the roller tumbling plane are depicted. One point on the middle line of the bearing. Single row bearings can accept radial load and one-way axial load; double row bearings can accept radial load and bidirectional axial load; suitable for receiving heavy load and impact load.
Cylindrical roller bearings are different according to the number of rows of rollers used for bearing; cylindrical roller bearings can be divided into single-row, double-row and multi-row cylindrical roller bearings. Among them, there are more single-row cylindrical roller bearings with support. In addition; there are other types of cylindrical roller bearings such as single or double row full complement rollers.
Single row cylindrical roller bearings are classified into N type, NU type, NJ type, NF type and NUP type according to the different ferrule ribs. Cylindrical roller bearings can receive large radial load; according to the layout of the ferrule ribs It also accepts a certain one-way or two-way axial load.
NN type and NNU double row cylindrical roller bearings are compact in layout; strong in rigidity; large in carrying capacity; deformed after being loaded.
FC, FCD, FCDP four-row cylindrical roller bearings can accept large radial loads; they are mostly used in heavy machinery such as rolling mills.
Spherical Roller Bearings This type of bearing is equipped with a spherical roller between the outer race of the spherical raceway and the inner race of the double raceway; it is different according to the internal layout; it is divided into four types: R, RH, RHA and SR. Because the outer ring rolls The middle of the arc of the track is common with the middle of the bearing; it has a self-aligning function; thus it can actively adjust the axial misalignment caused by the deflection of the shaft or the casing or the different core. Acceptable radial load and bidirectional axial load. Especially the diameter The load can be large; it is suitable for receiving heavy loads and shock loads.
Tapered bore bearings can be attached to and removed from the shaft by the use of fasteners or withdrawal sleeves. Spherical roller bearings can accept large radial loads; they can also accept a certain axial load. The outer ring raceways of this type of bearings are spherical in shape; therefore, they have a aligning function; when the shaft is subjected to bending or skewing, The middle line of the inner ring and the middle line of the outer ring are not inclined more than 1°~2. 5°; the bearing can still work.
Thrust roller bearing thrust roller bearings include thrust spherical roller bearings, thrust cylindrical roller bearings and thrust tapered roller bearings. Thrust spherical roller bearings can accept axial and radial loads together; but radial loads must not exceed 55% of the axial load. Another important feature of this type of bearing is its active centering function; thus it is not sensitive to different degrees of heart and shaft deflection. Only load P and P. do not exceed 0. 05C; and the shaft ring rotates; the bearing promises a certain size of the centering angle. The small value is suitable for large bearings; and the load adjustment angle will be reduced when the load increases.
The outer spherical bearing of the spherical bearing is preferably applied to the occasion where the required equipment and components are simple; for example, used in agricultural machinery, transportation systems or construction machinery. It is mainly used to accept radial and axial combined loads mainly based on radial load; It is generally not advisable to accept the axial load alone; such bearings can be separated from the inner ring of the device (with full set of rollers and retainers) and the outer ring. This type of bearing does not allow the shaft to be skewed relative to the outer casing; additional additions occur under radial load commissioning Axial force. The axial clearance of this kind of bearing is large. The disaster is å²¢ 芊裾 ã·éž´åµ ã·éž´åµ ã·éž´åµ 艽螅 艽螅 艽螅 æ•åµ¯è›´ æ•åµ¯è›´ æ•åµ¯è›´ æ•åµ¯è›´ æ•åµ¯è›´ 晃 晃 撸嵯蛴 撸嵯蛴 ç£ ç£ ç£ ç£ ç£ ç£ ç£ ç£é¸¹. Therefore, in the installation and operation, special attention should be paid to adjusting the axial clearance of the bearing; if necessary, the interference device can be pre-loaded; to increase the rigidity of the bearing.
Joint bearing joint bearings are smooth and self-smooth. The joint bearing is a special type of plain bearing. Its layout is simpler than the rolling bearing; it is mainly composed of an outer ring with an inner spherical surface; it can accept a large load; according to an inner ring with an outer spherical surface Different types and layouts; capable of accepting radial loads, axial loads or combined loads of radial and axial forces. Usually used for lower speed rocking motions (ie angular transport; also at a certain point of view scale Internal tilting motion (ie, aligning motion); because the sliding surface is spherical motion); when the support shaft and the shaft shell hole are not the same, the heart can still work normally.
Linear bearing linear motion ball bearings are mainly used in linear reciprocating parts of mechanical equipment; they have the advantages of small conflict, sensitive motion and convenient replacement and replacement. They are widely used in textile machinery, printing machinery, medical machinery, fine machine tools, electrical cutting machines. And active recorders and other categories.
Angular touch bearing angular contact ball bearing; can accept radial load and axial load together; can also follow pure axial load; high limit speed. The bearing can accept axial load resolution by touch angle; large touch angle; The ability to accept axial load is high.
Pressure bearing pressure bearing is a separate bearing; according to its layout, it is divided into one-way pressure ball and two-way pressure ball bearing. One-way pressure bearing can accept axial load in one direction; two-way pressure bearing can accept axial load in two directions. They are not capable of accepting radial loads.
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