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introduction：Linear bearings are widely used in electronic equipment，Tensile testing machine and digital three-dimensional coordinate measuring equipment and other precision equipment，And multi-axis machine tools、Punching machine、Tool grinder、Automatic gas cutting machine、printer、Card sorter、Sliding parts of industrial machinery such as food packaging machines。 （1）Lubrication and friction，Anti-corrosion oil is injected into the linear bearing，If lubricated with grease，Remove the anti-corrosion oil with kerosene or organic solution first，Air dry before adding grease。It is recommended to use a sticky labelN0.2Lithium soap grease。 （2）If the linear bearing is lubricated with oil，No need to remove the anti-corrosion oil，Can be selected according to the temperature changeISOViscosity classVG15-100Lube oil。Shaft lubrication can be supplied from the supply tubing without，Or feed the oil from the oil hole on the external bearing seat。Because the sealing ring will scrape off the lubricating oil，Oil lubrication is not suitable for n
2018-09-01 Reading quantity 206
introduction：Where there are bearings, there must be support points，The inner support point of the bearing is the shaft,The external support is often referred to as the bearing seat。Because one bearing can choose different bearing seats，At the same time, a bearing seat can choose different types of bearings，therefore,There are many varieties that bring bearing seats。Many large foreign bearing companies also have their own bearing seat type record。However, the same bearing housing model is not marked exactly the same in different company samples。Different applications for standard bearing housings，Bearing housings of different materials can be selected such as:Gray cast iron、Ductile iron and cast steel、Stainless steel、Special bearing housing in plastic。
2018-08-30 Reading quantity 344
introduction：Ceramic bearing has low thermal expansion coefficient because of its material，Low heat transfer performance，Elasticity measures small and other characteristics，Can completely cover the present precision、All applications of all-steel bearings above medium speed，However, attention should be paid to the installation。When installing ceramic bearings，Equal pressure must be applied to the circumference of the ring face，In order to load the ceramic bearing ring, it is forbidden to hit the bearing face directly with a hammer and other heavy objects，Bearing for protection!When a non-separable ceramic bearing is mounted on both the shaft and the bearing box，The inner and outer rings are pressed evenly with a cushion iron。In addition，If on one side of the ring( E.g. outer ring )Apply pressure，Will pass the roller to the other side of the ring( E.g. inner ring )indentation，This often causes indentation or abrasion on the rolling surface of ceramic bearings，Remember not to use。
2018-08-28 Reading quantity 223
introduction：The actual situation is the same as the rolling bearing，rollkoyoBearing accuracy is also divided into（main）Dimensional accuracy and rotation accuracy。The accuracy level has been standardized according to international parameters，Fall intoP０level、P６level、P５level、P４level、P２Grade five。 Accuracy from０Step by step increase，For general purpose0Level sufficient，But when used in other conditions or occasions，We need it5Grade or higher accuracy up。 The accuracy level above is althoughISOThe standard is formulated as the basis，However, the name varies from country to country。 Dimensional accuracy（Items related to shaft and housing installation） １、Inside diameter、Outside diameter、Permissible deviation of width and assembly width ２、Allowable deviation of inner and outer complex diameter of roller group ３、The permissible limit of the chamfer size ４、Allowable variation in width
2018-08-27 Reading quantity 966
introduction：Linear bearing is a linear motion system，Used in combination with linear travel and cylindrical shaft。Linear bearings have low friction，And relatively stable，Does not vary with bearing speed，It can obtain smooth linear motion with high precision。 Linear bearing consumption also has its limitations，The main thing is that the bearing impact load capacity is poor，And the carrying capacity is also poor，Secondly, the vibration and noise of linear bearings are larger when moving at high speed。Linear bearings are widely used in precision machine tools、Textile machinery、Food packaging machinery、Sliding parts of industrial machinery such as printing machinery。
2018-08-22 Reading quantity 508
introduction：snBearing seat design,The fit of shaft and bearing seat SNThe bearing seat is one that can accept a combined load、Construction of special large and extra-large bearing seats，It has a compact construction、gyrosensitivity、The device is easy to maintain。Bearing housings are widely used in the rolling industry，The selection and installation requirements for the bearing seat are also relatively strict。Even if bearings are correctly selected from numerous types，If the mounting part of the bearing is improperly designed，Nor can it give full play to its performance。Especially needle roller bearings，The wall thickness of the ring is thinner than that of other rolling shafts，Therefore, special consideration must be given to the design and coordination of the shaft and bearing seat。
2018-08-21 Reading quantity 365
introduction：1.superheating frominaThe microstructure overheating after quenching can be seen on the rough edges of imported bearing parts。However, it is necessary to examine the microstructure to determine the level of superheat。ifGCr15Coarse acicular martensite appears in the quenched structure of the steel，It is quenched superheated tissue。The reason may be that the quenching heating temperature is too high or the heating and holding time is too long；It may also be due to the severe carbide in the original tissue，The low carbon region between the two zones is composed of martensitic acicular thickness，The formed parts overheat。The residual austenite in superheated tissue increases，Dimensional stability drop。Overheating of the tissue due to quenching，The crystal of steel is thick，It will cause the toughness of the parts to fall，The impact resistance is reduced，Bearing life is also reduced。Overheating is so severe that a quenching crack may form。
2018-08-18 Reading quantity 329
introduction：Tapered roller bearing commonly used materials：The material of the rolling element and the inner and outer ring requires high hardness and contact fatigue strength、Good wear resistance and impact toughness。Generally made of chrome-containing alloy steel，Commonly used materials areGCr15、GCr15SiMn、GCr6、GCr9Etc.，The hardness can reach after heat treatmentHRC61-65。Cages are generally made of low carbon steel plates，High-speed bearings are mostly made of non-ferrous metals(brassiness)Or plastic cages。 The seal prevents the loss of lubricant and the entry of dirtSKFTapered roller bearings，Thus maintainSKFThe lubrication and cleanliness of tapered roller bearings are conducive to achieving a long life，But also consider the simplicity of the sealing structure、expense、Seal effectiveness and expiration date，According to environmental conditions and requirementsSKFTapered roller bearing life to be reasonably selected，Also note that seals are used properly，Can bring great benefits；Improper use of seals，It has little effe
2018-08-17 Reading quantity 373
introduction：Needle roller bearing(needlebearing)A roller bearing with a cylindrical roller，Relative to its diameter，The roller is thin and long。This roller is called a needle roller。Although it has a smaller cross-section，The bearing still has a high load acceptance capacity，Needle roller bearings are fitted with long thin rollers（Roller diameterD≤5mm，L/D≥2.5，LIs the length of the roller），Thus the radial structure is compact，Its inner diameter and load capacity are the same as other types of bearings，Small outside diameter，It is especially suitable for bearing results with limited radial mounting scale。
2018-08-16 Reading quantity 228
introduction：In case of improper use of bearings，It will cause the service life of imported bearings to be reduced，Severe cases can also cause mechanical damage，Bring unnecessary losses，Here it is necessary to understand the basic operating environment of the outer spherical bearing，And some commonly used outer spherical bearing testing means。 At the time of use，It is necessary to grasp the use of the outer spherical bearing in the machine，And the conditions of use and the required conditions of use，Have to satisfy，There can be no carelessness，To avoid unnecessary losses。
2018-08-14 Reading quantity 233
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