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introduction： High-speed motorized spindle is the core component of high-speed machine tool，The accuracy of each part of the electric spindle unit is usuallyμmlevel，As if jumping1～3μm，The spindle stiffness is generally100-300N/μm，therefore，The precision error and deformation of each part of the electric spindle are very small。however，At high speed，NTNThe bearing generates a lot of heat，Lead toNTNBearing temperature rise is very high，And cause thermal deformation。The error caused by thermal deformation is much greater than the precision error and deformation amount。moreover，The thermal deformation is directly changedNTNPreload condition of bearing，influenceNTNshaft
2014-12-09 Reading quantity 1687
introduction：SelectNTNBearing materials should also take into account its price，And when vacuum smelting or electroslag remelting steel has to be used，It should be noted that the lubrication conditions must be perfected，Can multiply the bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]Can be expected fatigue life。Of course，Bearings made of this kind of high-quality steel are selected[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，H
2014-12-08 Reading quantity 1793
introduction：NTNOuter spherical bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]The specific judgment method of whether repair should be reported，Instant bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]The specific methods of determining the occurrence of near failure are as follows： 1)Make use ofNTNOuter spherical bearing[bearing:bearing，thkbearing，
2014-12-07 Reading quantity 1729
introduction：NTNImported bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]The choice of materials inNTNImported bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]Performance has a certain impact。Rolling bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NA
2014-12-07 Reading quantity 1917
introduction： Probably a lot of customers are using itNTNSometimes there is such a question when bearing high speedNTNBearing requirementNTNThe rotating system in which the bearing is located is precisely dynamically balanced ，Why is thereNTNBearings have retainersNTNThe bearings dont have retainers。Today I would like to share with you aboutNTNThe function and structural characteristics of bearing cage。 NTNbearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IK
2014-12-07 Reading quantity 1786
introduction： NTNBearings show strong regularity in their use，And repeatability is very good。Normal high quality outer spherical bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]At the beginning of use，Vibration and noise are relatively small，But the spectrum is a little scattered，The amplitude is small，Probably due to some defect in the manufacturing process，Such as surface burrs。
2014-12-07 Reading quantity 1742
introduction： We found in long-term production condition monitoring，Rolling bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]In the course of its use, it shows strong regularity，And repeatability is very good。Normal high-quality imported bearings[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，
2014-12-06 Reading quantity 1658
introduction：NTNAfter bearing installation，To check that the installation is correct，An operational check is required。Small machines can be turned by hand，To make sure the rotation is smooth。Check items for foreign bodies、scar、Poor operation due to indentation，Due to poor installation，The torque caused by poor machining of the mounting seat is unstable，Because the clearance is too small、Installation error、Seal friction caused by excessive torque and so on。Power operation can begin if there is no anomaly。Large machinery cannot be rotated manually，So cut off the power immediately after the no-load start，Mechanical idling，Check for vibration、noise、Whether the rotating parts are in contact, etc，After confirming that there are no anomalies，Entry motion
2014-12-06 Reading quantity 1661
introduction： Rolling bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]One kind of noise is bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]self-generated，Instant bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTN
2014-12-06 Reading quantity 1694
introduction：NTNImported bearing[bearing:bearing，thkbearing，trbearing，NSKbearing，NTNbearing，SKFbearing，NACHIbearing，KOYObearing，HCHbearing，IKObearing]During precision grinding，Because of rough requirements，The grinding marks appearing on the working surface can often be observed with the naked eye, and the surface grinding marks mainly have the following types。The reason of cross helix marks is mainly due to the poor flatness of the bus bar of the grinding wheel，concavity，At grinding，The grinding wheel is only partially in contact with the workpiece，When the workpiece or grinding wheel several round trip movement，The cross screw is reproduced in the workpiece performance
2014-12-06 Reading quantity 1652
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