>> P.484
[2]Life calculation The life of maintenance-free type PILLOBALL Rod Ends is obtained from the which is given in Fig.6 for obtained from equation (3).total sliding distance S the contact pressure p ■Oil Hole and Grease NippleTable 10 shows the specifications of oil hole and grease nipple on the outer ring or body. Further, lubrication nozzle models compatible with the grease The total number of oscillations and life in hours can nipple are shown in Table 11.be obtained from the following equations.SfG=16.67×b1× V ………………………(7)Lh= ……………………………………(8)G 60fwhere,G:Life (Total number of oscillations)b1: oad directional factor (Refer to Table 9.)S:Total sliding distancem f Number of oscillations per minutemin-1V:Sliding velocitymm/s Lh:Life in hourshTable 9 Load directional factor for maintenance-free type PILLOBALLs b1Load directionConstantAlternateLoad directional factorb110.2(1)Note(1) his value is applicable when the load changes compara-tively slowly. When the load changes rapidly, please con-sult IKO, as the factor degreases sharply.For PILLOBALLs without an oil hole and grease nip-ple, apply grease directly on the spherical surface.Table 10 Specifications of oil hole and grease nippleTypeBore diameter of inner ring d mmPBPHS(…A)POS(…A) d≦44<d d≦44<d≦66<dSpecification1 oil hole + oil grooveNoneWith grease nippleNone1 oil holeWith grease nipplePHSB・POSBNone(1)PHSAWith grease nipplePHS … EC,POS … ECNoneNote(1) rease Nipple is available for size 4 or larger with sup-plemental code.Table 11 Types and Dimension of Lubrication NozzlesTypeDimensionFig. 6 Contact pressure and total sliding distance for maintenance-free type PILLOBALL Rod Ends■LubricationMaintenance-free type PILLOBALL Rod Ends have a sliding surface lined with a self-lubricating lining. Therefore, they can be used without lubrication.Lubrication type PILLOBALLs are not provided with prepacked grease. Perform proper lubrication for use. Operating without lubrication will increase the wear of the sliding contact surfaces and cause seizure.K35B-5120RRemarkHSP-3(Yamada Corporation)can be used for them.The above nozzles can be atached on grease gun shown below.the standard Body of grease gunLubrication Nozzle504030201001020501002005001000Total sliding distanceSmA-5126T×310A-5120Rmm/N2pContact pressure
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