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bearing (bearing) in the fixed mechanical parts. When other parts on the shaft are causing relative movement of the center of the shaft used to maintain and control the movement of parts to known bearings.
directory
About the role of the size classification of rolling bearings can bear the load direction of its classification of angular contact bearings, spherical bearings deep groove ball bearing linear motion bearings ball bearings roller bearings Thrust ball bearings Cylindrical roller tapered roller bearings needle roller bearings spherical roller bearings thrust bearings roller bearings cylindrical roller thrust bearing thrust bearing thrust roller spherical roller bearings bearings mounted bearing mill bearing bearings bearing structure of imports and the performance characteristics of thrust angular contact ball bearing deep groove ball bearings Tapered Roller Bearings Thrust Note the use of the invention the merits of packaging bearing the word is clear stamp is clear whether there are miscellaneous sound muddy surface traces of oil if there is uniform chamfer keep bearing installation bearing pre-installation notes heating installation method Note bearing removal bearing maintenance 1, 2 cleaning, inspection and fault recognition method to determine bearing identification by voice recognition through the work of the temperature of the identification by the state of lubricant bearings sealed packaging packaging packaging loss of lubrication to reduce friction and extend the fatigue life of friction the friction heat exhaust, cooling the other three major domestic manufacturers of industrial bearings manufacturer outstanding foreign companies excellent representation of the basic code and industry standard Dynamic load rating life rating life of bearing life bearing basic dynamic load ratings of damage cause of damage prevention issues bearing life About Bearings (7) China is the world's first invention bearing one of the countries in the Chinese classics, the axle bearing on the structure has long been documented. And data from the archaeological perspective, China's most ancient structure with a prototype of the modern rolling bearings, appeared in 221 ~ 207 BC (Qin Dynasty) in Yongji County, Shanxi Province, Xue this cliff village. After the founding of New China, particularly since the seventies of this century, a strong push in the reform and opening up, the bearing industry has entered a new period of rapid development of high quality. In the seventeenth century, the British design and manufacture of ball bearings C. Vallotton, and installed in the postal car, and the United Kingdom P. Worth trial made ball bearings of the patent. HR Hertz eighteenth century Germany made ball bearing contact stress on the paper. Build on the achievements in Hertz,shape up shoes, R. 施特里贝克 Germany, Sweden, Glenn A. Pam, who were a large number of experiments bearing on the development of design theory and contributed to the fatigue life calculation. Subsequently, the Russian NP Petrov apply Newton's law calculation of viscous friction bearings. Leo O. Renault UK discovery of a mathematical analysis of Reynolds equation is derived, from laying the hydrodynamic lubrication theory. Fifty years in the founding of the Chinese bearing industry has made remarkable achievements. Role

study in terms of its role should be to support the literal interpretation of the bearing axis is used, but only as part of its role, supporting its essence is the ability to bear radial load. Also be understood as it is for a fixed axis. Is fixed so that it can only achieve rotation axis, and control the axial and radial movement. Without bearing the consequences of the motor is not work at all. Because the axis of movement in any direction possible, while the electrical work required only for the rotation axis. Theoretically, the role of transmission can not be achieved, not only that, the bearings will also affect the transmission, in order to reduce the impact of high-speed shaft bearing lubrication must achieve good, and some lubricating bearing itself has called the pre-lubricated bearings, and Most of the bearings must be oil, the load at high speed, due to the friction will not only increase energy consumption, even more frightening is very easy to damage the bearings. The sliding friction into rolling friction is one-sided argument, as a kind of something called the sliding bearing. Rolling into size categories: (1) miniature bearings ---- nominal diameter size range of 26mm below the bearing; (2) small bearings ---- nominal diameter size range of 28-55mm bearings; (3 ) ---- small and medium sized bearing nominal diameter size range of 60-115mm bearings; (4) ---- large bearing nominal diameter size range of bearings for the 120-190mm (5) large bearing ---- nominal diameter size range of 200-430mm bearings; (6) ---- large bearing nominal diameter size range of 440-2000mm bearings. (7) significant bearing ---- nominal diameter size range of 2000mm above the bearings. The classification can bear the load direction can be divided into: ① radial bearings, also known as radial bearings, radial load. ② thrust bearing, also known as the thrust bearing, axial load. ③ radial thrust bearing, also known as radial thrust bearing to support radial load and axial load. Bearing friction by the different nature of the work can be divided into sliding friction bearings (the bearings) and the rolling friction bearings (the bearings) two broad categories. Angular contact ball bearings and rings contact angle is greater than the nominal 0 °, but less than 90 ° of the bearing. Can support radial load and axial load. Able to work at a high speed. The greater the contact angle, the higher the axial load capacity. High precision and high-speed bearings usually take the contact angle of 15 degrees. Axial force, the contact angle will increase. Single row angular contact ball bearings can withstand axial load in one direction, the radial load, will cause additional axial force. Shaft or housing, and can only limit the axial displacement in one direction. If pairs of double-installed, so a pair of bearing outer ring relative, that the wide end facing wide face, narrow side facing the narrow end. This can avoid additional axial force, but also in both directions so that the shaft or housing to limit axial clearance range. Spherical bearings are spherical and wide inner ring with locking pieces bearing to the heart. Used mainly for the simple case. Two roller bearing linear motion rolling direction in a relatively linear motion bearings. Ball bearings rolling body is a ball bearing. Deep groove ball bearings are a cross-section of each ring is about one-third of the circumference of the ball-type roller continuous groove ball bearings to the heart, for precision instruments, low noise motors, automobiles, motorcycles and general machinery , are the most widely used in machinery industry of a class of bearings. Simple structure, easy maintenance. Mainly used to bear radial load, but also can withstand a certain degree of axial load, when the radial bearing clearance increased with the performance of angular contact ball bearings can bear large axial load. This kind of bearing friction, high limiting speed, size range and diverse. Solid durability, versatility and low noise operation, can operate at high speed and easy to install. Sealed single row deep groove ball bearings and another design, you can not re-lubrication and no maintenance. Single row ball with gaps and double-row ball bearings, suitable for heavy working conditions. Thrust ball bearings Thrust ball rolling is rolling. Roller bearing is rolling bearing roller. Cylindrical roller bearings rolling body is cylindrical roller bearings to the heart, is a separation of bearings, installation and removal is very convenient. Divided into single row cylindrical roller bearings, double row and four columns. Installed in accordance with the rolling bearing different number of columns, cylindrical roller bearings can be divided into single row, double row and multi-row cylindrical roller bearings. One application is more cage row cylindrical roller bearings. In addition, single or double row full complement cylindrical roller and other structures of the cylindrical roller bearings. Single row cylindrical roller bearings under the ring ribs divided into N-type, NU type, NJ-type, NF-and NUP type. Cylindrical roller bearings under radial load capacity, according to the structure of ring wall can withstand a certain one-way or two-way axial load. NNU NN-and double row cylindrical roller bearings, compact structure, rigidity, load capacity, after the deformation under load, mostly for machine tool spindle bearing. FC, FCD, FCDP-type four-row cylindrical roller bearings can withstand greater radial load, and more for rolling mills and other heavy machinery. Cylindrical roller bearings are used in motors, machine tools, oil, mill machinery and all kinds of industrial material handling machinery. Tapered roller bearings rolling body is tapered roller bearings to the heart. Needle roller bearing is rolling bearing to the heart. Spherical roller bearings rolling body is convex or concave spherical roller bearings tone heart to heart. A convex spherical roller bearings, the outer ring raceway of a spherical shape; a concave roller bearings have a spherical shape of its inner ring raceway. Thrust roller bearings rolling body is thrust roller bearings. Thrust cylindrical roller bearings rolling body is thrust cylindrical roller bearings.
spherical roller bearings
thrust tapered roller bearings: rolling body is a tapered roller thrust bearing. Thrust needle roller bearings rolling body is thrust bearing. Spherical roller thrust bearings rolling body is convex or concave spherical roller thrust bearing aligning. A convex spherical roller bearing spherical roller ring-shaped,skechers outlet, with concave spherical roller bearing raceway ring axis spherical shape. Bearings Radial bearings with a seat combined with a component, in line with the axis parallel to the support bearing on the surface of the base plate mounting screws. Joint bearing surface of the spherical sliding contact, mainly used in swinging movement, tilting movement and rotation of the spherical plain bearings. Bearings of a bearing while the bearing structure of the two or more combination of rolling bearings. Such as needle roller and thrust cylindrical roller bearings, needle roller and thrust ball bearings, needle roller and angular contact ball bearings and so on.
plane bearing
Other Bearings: In addition to the above other than the structure of the bearing. Bearings: Plain bearings, regardless of inner and outer rings are not rolling, generally from wear-resistant materials. Commonly used in low-speed, heavy load and filling oil and difficult to maintain mechanical moving parts. Rolling mill bearing mill bearing is generally used to bear radial load, and the same size deep groove ball bearing, has a large radial load capacity, speed close to the deep groove ball bearings, but with the axis of such bearings Shell Hole higher, and allow the inner ring and outer ring axis inclination of the axis is very small (2 ° -4 °), two-axis tilt, such as beyond the limits of roller and ring raceway contact situation will be worse, serious of the load bearing capacity, reduce bearing life. Therefore, these bearings such as axial load needs to be installed in the role of host components, only the simultaneous use of other types of bearings to carry axial load of the premise, before use.
thrust roller bearings
General said bearings are rolling bearings (ball and roller bearing). Rolling is the operation of the shaft and the sliding friction between the axle seat to rolling friction, thus reducing the friction loss of a precision mechanical components. Generally bearing outer ring, inner ring, rolling body and cage components. Rolling easy maintenance, reliable, good starting performance, carrying capacity in the medium high speed. Compared with the sliding bearing, radial bearing large size, the less vibration, high speed, low life sounds great. Rolling bearings in to the heart (mainly radial force) are generally the inner ring, outer ring, rolling and rolling body cage 4 parts. In the journal on the inner sleeve along with the axis of rotation, the outer ring installed in the bearing hole. In the inner and outer peripheral were made within weeks on a rolling road. When the relative rotation of inner and outer rings, rolling the scroll, including the outer ring raceway, they are separated by a cage, to avoid rubbing against each other. Tight ring and thrust bearing live ring divided in two parts. Tight tight circle with the sleeve, live in the bearing seat bearing ring. Rings and rolling bodies are usually high strength, good wear resistance bearing steel, the surface hardness after quenching should reach HRC60 ~ 65. Cage is made more pressing with the soft steel, copper alloys can also be used bakelite cloth or plastic and other manufacturing. Bearing performance characteristics of the structure and thrust angular contact ball bearings Axial angular contact ball bearing contact angle of 60 ° is generally used in the thrust angular contact ball bearings are generally two-way thrust angular contact ball bearings, mainly used for precision machine tool spindles, usually with double row cylindrical roller bearings used in conjunction with, can withstand two-way axial load, with high accuracy and good rigidity, low temperature, high speed and easy assembly and disassembly. Deep groove ball bearings deep groove ball bearings in the structure of each ring with a cross-section of both the ball around the equatorial circumference is one-third of the continuous groove type raceway. Deep groove ball bearings are mainly used to bear radial load, but also can withstand a certain axial load. When the bearing radial clearance increases, with the nature of angular contact ball bearings, can withstand both directions alternating axial load. With the same size compared to other types of bearings, such bearings friction, high limiting speed, high precision, when a user selection of the preferred bearing type. Deep groove ball bearing structure is simple and easy to use, is the largest production volume, most widely used of a class of imported bearings. Thrust tapered roller bearings

thrust tapered roller bearings as the rolling body is tapered roller, rolling in the structure of the bus and washers are Raceway bus lines intersect at a point bearing axis , which can form the surface of pure rolling rolling, speed limit higher than the thrust cylindrical roller bearings. Features: Thrust tapered roller bearings can withstand axial load in one direction. Thrust tapered roller bearing type codes for the 90000 type. 4 bearings in the double row tapered roller bearing structure, performance characteristics

double row tapered roller bearings range, the maximum amount of 35,000 type, there is a double and two within the outer ring raceway circle, one between the two separated inner circle, changing the thickness of the spacer adjustable clearance. Such bearing radial load at the same time can withstand two-way axial load may be axial clearance in the bearing shaft and housing within the limits of the axial displacement. Tapered roller bearing structural characteristics. Tapered roller bearing type code is 30000, tapered roller bearings for the separation of bearings. Tapered roller bearings are mainly used to bear radial load mainly consisting of radial and axial load. Compared with the angular contact ball bearings, bearing capacity, low speed limit. Tapered roller bearings can withstand axial load in one direction, to limit the shaft or housing axial displacement in one direction. The early invention of the form of linear motion bearings, skid plate is a row in a row of wood placed. This technique may be traced back to when the construction of the Great Pyramid of Giza, though no clear evidence. Modern linear motion bearings are used in a working principle, but sometimes the ball instead of rollers. The first sliding and rolling bearings are made of wood. Ceramics, sapphire, or glass are also used, steel, copper, other metals, plastics (such as nylon, bakelite, teflon, and UHMWPE) have been widely used. From the heavy axle and spindle to precision watch parts, many occasions need to rotate the bearings. The simplest rotary bearing is the sleeve bearing, it is just a folder in the bush between the wheel and axle. This design was subsequently replaced rolling bearing is a cylindrical roller with a lot of the original bushing replacement, each rolling body is like a single wheel. First put into practical bearing cage with a clockmaker John Harry is worse than 1760 total time for the production of H3 invented. Nano Lake in Italy found a Roman vessel, found examples of early ball bearings. The wooden ball bearings are used to support the rotating desktop. The ship was built in BC 40 years. Leonardo da Vinci in around 1500 is said to have been of a description of ball bearings. The various factors bearing immature, there are a very important point is that collisions will occur between the ball, causing additional friction. But you can put the ball into a small cage to prevent this phenomenon. The 17th century, Galileo on the But in the following for a long time, install the bearings on the machine has not been realized. The first patent is on the ball channel Philip Vaughan Carmarthen acquired in 1794. In 1883, Friedrich Fischer proposed the use of suitable production machines grinding the same size and roundness of the ball and accurate claims. This laid the creation of an independent bearing industry base. In 1962, FAG has been modified and the trademark still in use today, and in 1979 became an integral part of the company. In 1895, Henry Timken designed the first tapered roller bearings, three years later obtained a patent and set up Timken Company. In 1907, SKF bearing factory Sven Lindqvist designed the first temperature and the modern self-aligning ball bearings. Note the use of mechanical parts, compared with the general, high precision roller bearing, so use accordingly should be careful. 1) Keep the bearing and its surroundings clean 2) when used carefully if the reckless use of a strong shock to the bearings will make in bearing injuries, indentation, fracture and other injuries. 3) Use the right tools 4) Note that to avoid rust bearings used in wet places, but also not to sweat stained, should wear gloves. 5) Users should be familiar with the bearing 6) used to develop job specifications bearing a, bearing the custody of b, and the surrounding bearing cleaning c, install the parts of the size and processing quality of the test d, installation e, f post-installation inspection , Demolition g, maintenance (regular inspection) h,shape ups skechers, additional bearing lubricant bearing the merits of how to identify strengths and weaknesses to identify the quality of equipment bearing quality, we usually from the following aspects: packaging under normal circumstances is clear , regular manufacturers have their own special brand of external packaging designers to design, production conditions and arrangements for clearance of the factory production of production, therefore, in terms of product packaging lines to the color should be very clear and unambiguous. Every word is clear stamp bearing products will be printed on the products bearing its brand body of words, labels and so on. Although the font is very small, but the formal product manufacturers have adopted the symbol printing technology, but without the heat pressure treatment is carried out before the word, so the fonts may be small, but a deep concave, very clear. And usually, the font of counterfeit products not only vague, because the rough printing technology, fonts, floating on the surface, some of them can be easily wiped off by hand or hand signs seriously. Whether there is complex set of bearing the body holding the left hand ring, right hand rotation to toggle coat, listening to whether the process of bearing operation miscellaneous ring. As most of the conditions behind the production of counterfeit products is entirely hand-workshop-type operations, bearing the body in the production process will inevitably be distracted by dust, sand, impurities in a class, so in time there will be rotating bearing ring or run complex phenomenon that is not smooth . This is to determine whether a product comes from strict production standards, and regular use of machine operation the key to brand manufacturers. Are there traces of oil the surface of the muddy muddy surface traces of oil if it necessary for us to buy imported bearings should be special attention. Because of the current anti-rust technology and advanced manufacturing countries there is a gap, so the rust on the bearing body can easily deal with traces of oil left behind a thick, sticky feeling when you touch the thick, viscous, and foreign bearings imported almost do not see any traces of rust preventive oil. According to insiders, in particular, careful people can import a particular bearing on the taste of smell, which is anti-rust oil flavor. The so-called bearing chamfer chamfer is uniform, that is, horizontal surface and vertical side of the junction, counterfeit products bearing the restrictions in production technology, in which the rougher edges of the site was unsatisfactory treatment, which we can easily identification. Were kept at the factory bearings coated with an appropriate amount of anti-rust oil and use rust-proof paper packaging, as long as the packaging is not damaged, the bearing quality will be guaranteed. But the long-term storage, to be below 65% humidity, the temperature is around 20 ℃ condition, stored in a shelf 30cm above the ground is appropriate. In addition, the storage place should avoid direct sunlight or touch the wall with the cold. Bearing Installation Precautions 1) The preparation of the bearing after bearing anti-rust treatment and be packaged, so do not open the package before installing Pro. In addition, anti-rust oil coating on the bearings with good lubrication performance, and for general purpose bearing grease bearings or filling can be used directly without cleaning. But for the instrument bearing or bearings for high-speed rotation, the application of clean oil clean oil will wash away the rust, then bearing easily rust, can not long be placed. 2) washing the test shaft and bearing housing and the housing, make sure to leave no scars or machining burr. Enclosure is absolutely prohibited abrasive (SiC, Al2O3, etc.) sand, chips and so on. Second, check the shaft and the shell size, shape and processing quality is consistent with the drawings. Bearings before installation in the shaft and housing inspection with the surface coating of various mechanical oil. Replace bearings bearings is a result of bearing types and vary with conditions. Because most multi-axis rotation, so the inner and outer ring can be used separately with the interference fit and clearance, while the outer ring rotates, the outer ring with the interference fit. (1) pressure to install the mounting pressure into the general use of press, but also can make use of bolts and nuts, when forced into the use of hand-loaded hammer. (2) sets of installation of hot bearings in oil heated to expand it and then install the shaft bearing thermal sets of methods can avoid being affected by unnecessary force, in a short time to complete the installation. Heating Note 1) general heating should not exceed 100 ℃. 2) does not allow contact with tank bottom bearing. Another hot set of installation can also use the induction heating device to heat expansion of the bearing and then installed in the shaft. Bearing periodic inspection or replacement of parts removal, you need to remove bearings. Shaft and bearing housing are usually almost always continue to use, the bearings tend to continue to use. Therefore, the structural design should take into account the removal of bearings, not to damage bearing, shaft, bearing housing and other parts, while also preparing the appropriate removal tools. Static with the ring removal, only to increase tension in the ring, and may not pull through the rolling ring. Maintenance of bearings is the bearing to maintain its full and proper performance of the long-term, regular maintenance must be a really good job (regular inspection). Through appropriate periodic inspection, so that early detection of failure, to prevent accidents in the first place, to increase productivity and economy is very important. 1, cleaning the bearings removed for inspection, first with photography and other methods to do the appearance record. In addition, to confirm the remaining amount of lubricant and lubricant samples, and then cleaning bearings. a, bearing wash to clean coarse and fine points for washing, and placed in the bottom of the container used in the metal grid. b, rough wash, brush used in oil grease or sticky materials such as clear. At this point if the rotating bearings in oil, pay attention to damage due to foreign bodies such as rolling surface. c, sperm washing, slowly rotating bearings in oil should be carefully carried out. Cleaning agents commonly used for the neutral non-water diesel or kerosene, is sometimes necessary to use warm lye. Regardless of what kind of cleaning agent used, must be kept clean filters regularly. Cleaned immediately after the anti-rust coating on the bearing oil or rust and grease. 2, check with the judge to determine whether the re-use the bearings removed, we should focus on checking the accuracy of its size, rotation accuracy, internal clearance, and with the surface, raceway, cage and ring. On the inspection results may be proficient with a bearing or bearings are used to judge. Criteria to determine the mechanical properties and importance under the inspection cycles, and vary. If the following injury,shape up skechers, the bearings may not re-use, must be replaced. 1) bearing parts of the faults and defects. 2) rolling raceway surface of the strip material. Bearing fault identification method is not by removing the check, you can identify or predict whether the failure of bearings in operation, to improve productivity and economy is very important. Identification of the main methods are as follows: identification by voice recognition using sound need to have a wealth of experience. Must be adequately trained to be able to identify voice and non-bearing bearing sound. Therefore, we should try to carry out this work by hand. Listening, or listening with a stick attached to the shell can be clearly heard the voice bearing. Temperature through the work of identification of the methods are of relatively recognition method is limited not by changes in the functioning of state occasions. To this end, the temperature must be continuously recorded. Failure, not only temperature, but also irregular changes. Recognition by the state of lubricant sampling and analysis of lubricants, whether through its pollution level, or metal powders mixed with foreign matter to judge. This method can not be observed near the bearings or large bearings are particularly effective. Bearing bearing packaging packaging packaging and packaging since the beginning. Bearing in the manufacture of finished and after passing inspection, the cleaning and anti-rust treatment, then put the package in order to achieve the water, moisture, dust, shock, maintaining the quality and precision bearings, and ease of use and sales. Bearing on three types of packaging by rust: ① short rust on the packaging: rust of 3 to 6 months for high-volume shipments to the same subscribers in the short term will be put into use in the bearings. By mutual agreement, to facilitate the use of the principle, the use of simple packaging. ② general corrosion of the packaging: anti-rust period of one year for general purpose bearings. ③ long rust on the packaging: anti-rust period of two years for special and precision bearings. Packaging materials bearing a polyethylene plastic tube (box), kraft paper, polyethylene and wrinkles plain paper, cartons, polyethylene or polyethylene plastic film, nylon fastening tape or plastic woven fastening tape, waterproof plastic with high strength , sacks, and so on. These materials are required to ensure the corrosion resistance of the material passing the test. ① miniature bearings inside the packing: 10 ~ 15 sets of bearings into a plastic tube, 5 to 10 per plastic tube put into a box (or bag, paper bag). ②, small bearings: bearing sets of polyethylene film, kraft paper or polyethylene for external use of paper for paper bag; several sets of bearings into a plastic tube (box); a single set of bearings with polyethylene film bag, collapse or Seal the bag and then into a box. ③ Large Bearing: polyethylene film or polyethylene single set of packaging paper, and then into a box; with polyethylene film bag, a single set packaging folding pocket, and then into a box; single package into a special plastic boxes; a single set of three bind up our wounds Packing: inner with polyethylene film or a composite tape, the middle fastening band, infiltration of plastic tape with a waterproof outer layer. ④ large bearings: a single set of three bind up our wounds packaging (ibid.); one by four bind up our wounds Packaging: packaged in the above three bind up our wounds, the outermost layer of linen with the then bind up our wounds. Diameter ≥ 150mm of the separable tapered roller bearings, in the packaging, the external component should be preceded by polyethylene film liner, or inner and outer components packaged separately. Diameter ≥ 150mm of interchangeable cylindrical roller bearings, complete packaging easy to knock because of injury, general internal and external components can be packaged separately. ① Double corrugated packaging boxes, each box of the total weight (gross weight) does not exceed 25kg, external tank strap tied; ② nail plate box (wooden box),skechers shoes online, each containing a total weight not exceeding 30kg, blue steel box tied topical; ③ Gaisu corrugated boxes, each containing a total weight not exceeding 25kg, packaged with a box tied with a plastic love. Will be packaged with the products bearing the load box, the box should be in plastic bags or plastic film liner; box if the gap required corrugated blocks, paper and other dry material to fill. Bearing parts (a) of the bearing parts General 1. Composed of rolling bearing parts of the various components, but does not include all of the attachments. 2. Bearing ring with one or more roller bearings to the heart of the circular parts. 3. Bearing washers with one or more thrust roller bearing ring parts. 4. Flat ring is basically a detachable flat washer, with its inner or outer part of the heart as a cylindrical roller bearings to the outer or inner ring of a wall. 5. Oblique collar (detachable) with a detachable 6. In the ring with two or more columns in the roller of a roller bearing detachable circle, used to isolate the two rollers and guide rollers. 7. Stop ring has a constant cross-section of single rings, installed in the ring ditch, a roller bearing or the shaft in the axial position inside the enclosure. 8. Locking ring has a constant cross-section of single rings, mounted on the ring ditch as a roller or ring to keep the bearing cage. 9. Every circle is a circular parts, for two washers between the bearing rings or bearings or bearing rings or between the two half bearing washer between the two halves so that they are provided between the axial distance. 10. Ring formed by one or more parts of the ring cover, fixed to the bearing washer and a ring or rings or gaskets with another contact or the formation of the labyrinth of narrow gap, to prevent oil leakage and foreign matter. 11. Dust cover is a circular cover, usually made of sheet metal stamping, fixed in a ring or a washer bearing on, and extends towards the other rings or washers, hidden inside the bearing space, but not with another ring or gasket contact. 12. Retainer ring attached to the inner ring or shaft of a part, using centrifugal force to enhance the bearing capacity to prevent foreign matter. 13. Rolling in the groove between the rolling ball or roller. 14. Retainer part or parcel number of rolling, and with the movement of bearing parts together, to isolate rolling, and rolling guide and usually keep their bearings. (B) of the bearing structure of part 1. Roller bearings under the load part of the surface, for rolling the rolling track. 2. Straight roller rolling in the direction perpendicular to the plane of the bus for the line roller. 3. Convexity roller rolling in the direction perpendicular to the plane convex curve was continuous basic cylindrical or conical roller to prevent the roller and raceway contact of stress concentration. 4. Spherical ball raceway raceway portion of the surface. 5. Channel ball bearing raceway groove shape, usually an arc-shaped cross section, slightly larger than the radius of its radius. 6. (Groove) groove shoulder (roll) side of road. 7. Rib prominence in the raceway surface and rolling direction parallel to the narrow shroud. To support and guide the rolling elements and keep it in the bearing. 8. Guide the cage surface of the cylindrical bearing rings and gasket surface to the radial guide cage. 9. Ring (gasket) face perpendicular to the ring (washer) axis line of the ring (gasket) surface. 10. Bearing bore or shaft bearing inner ring bore 11. Cylindrical bore bearing or bearing part of the inner hole, the bus was basically straight line or with the bearing axis parallel to the axis of bearing parts. 12. Conical bore bearing or bearing part of the inner hole, the bus was basically a straight line and with the bearing or bearing part axis line intersects the axis line. 13. Bearing outer surface of the bearing outer ring or the outer surface of seat. 14. Ring (gasket) chamfered bearing bore or the outer surface of one end connected with the ring ring (gasket) surface. 15. The more process slots in the bearing ring or bearing wall or flange gaskets to facilitate grinding the root of the open trench or slot. 16. Seal (contact) surface and the ring sliding contact surface. 17. Seals (dust cover) slot to maintain the bearing seal (dust cover) of the slot. 18. Snap ring groove to maintain the snap ring groove. 19. Lubrication groove in the bearing part on the slot used for the transmission lubricant. 20. Lubrication hole in the bearing parts, and used to transport the lubricant holes on rolling. (C) of the bearing ring 1. Inner ring raceway surface of the bearing outer rings. 2. Outer ring raceway surface, including bearing rings. 3. Conical inner tapered roller bearing inner ring. 4. Cone outer tapered roller bearing outer ring. 5. Double roller tapered inner raceway of the double-tapered roller bearing inner ring. 6. Double roller cone outer ring raceway of a double-tapered roller bearing outer ring. 7. Wide inner ring at one end or both ends of the widening of the bearing inner ring, in order to improve the axis of the hole in his boot or install additional fasteners or sealing position. 8. Locking shoulder all or part of an inner ring is removed the groove-type ball bearing inner ring. 9. Locking one shoulder all or part of the outer ring is removed the groove-type ball bearing outer ring. 10. Drawn by a sheet metal stamping, one end of the sealing (sealing Drawn) or open at both ends of the ferrule, generally point to the outer ring of needle roller bearings. 11. Flange flange bearing outer ring outer ring. 12. Self-aligning spherical outer surface of the outer ring outer ring to accommodate the axis line and the axis line bearing the permanent angular displacement between the generated. 13. Self-aligning seat outside the outer ring and the seat for aligning the ferrule between the holes, there is a sphere with the outer ring to match the outer surface of the spherical inner surface. 14. Spherical bearing outer surface of the ball out of the loop portion of the surface. 15. Conical tapered outer wall in front of the outer ring raceway on the wall in front to guide the roller large end and to withstand the thrust roller. 16. In the ring with a double roller bearing rings, for example, double-tapered roller in the middle of the whole inner wall. (D) bearing washer 1. Shaft loop installed in the shaft bearing washers. 2. Seat installed here within the bearing washers. 3. In both sides of the raceway ring bearing washers, Thrust bearing for double row rolling elements between the two. 4. Self-aligning ball seat with seat back to accommodate the axis line and a permanent seat axis angular displacement between the lines. 5. Aligning seat washers for aligning seat ring and the shell to withstand the thrust washers between the surface,skechers shape ups, the surface is concave spherical surface and aligning the ball on the back seat match.