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KK8251020501002005001000×103Total sliding distanceSmFig.5 Total sliding distance against contact pressure of Maintenance-free spherical bushings10090807060504030201001mm2/NpContact pressure■Lubrication■Oil HoleSteel-on-steel Spherical Bushings require periodic The number of oil holes on inner and outer rings is grease lubrication as a general rule. During initial shown in Table 15.operation, it is recommended to shorten the lubrica-tion interval. Lithium soap based grease (NLGI con-sistency No.2) containing molybdenum disulfide (MoS2) is widely used as the lubrication grease. For Maintenance-free Spherical Bushings, lubrication is not required. However, supplying lithium soap based grease before operation can extend the life of the Spherical Bushing. Also, to protect the bearing from foreign substances and corrosion, it is effective to ll the area around the bearing with grease.Table 15 Number of oil holes on inner and outer ringsBushing typeNumber of oil holes on inner and outer ringsSteel-on-steel Spherical BushingsMetric seriesGE … GE … SB,SB … AGE … S,GE … GSInch seriesSBBMaintenance-freeSpherical BushingsMetric seriesGE…EC0220Remark ypes with oil holes are also provided with oil grooves on inner and outer rings.
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