SAMICK
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Home > Technical Information > SAMICK LINEAR BUSHING > Lubrication and Friction
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> Load Rating and Service   Life Linear Motion System
> Factors that affect travel   life
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> Referance Data
 

Linear Bushing is used with grease lubrication or oil lubrication but in some case, it is used without any lubrication.
Before applying the grease, the anticorrosive oil must be removed by kerosene or organic solvent, and applying the grease after drying. Must Applying grease directly on the ball for both side seled type (UU), and applying same as above or applying on the shaft for without sealed type. Lithium soap radical of viscosity mark (JIS No.2) is recommended for use.
Operating Temp Viscosity
-30¡É ~ 50¡É VG 15 ~ 46
50¡É ~ 80¡É VG 46 ~ 100

There is no need ti remove anticorrosive oil when oil is used for lubrication. ISO viscowity grade VG15~100 oil is usually used according to the temperature. The turbine oil, machine oil, and spindle oil are usually used as lubrication oil. Drop the oil on the shaft for lubrication, or supply it through an oil hole provided on the housing(Fig 6). However, droppong lubrication is not used in both seal type because the seal remove oil, because. Contact SAMICK for Lnear Bushing sith lubrication hole for user's dermands.
Linear Bushing has balls as rolling elements, so it gives rise to reduces the frictional resistance. Static fricion, in particular, is very low, and there is just there little diffenence between static and dynamic friction, so that stick-slip does not occur. Such low friction makes submicron feeding possible. The normal friction coefficiebt is on Fig below and Friction resistance can be calculated by following equation.