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Oiles 250 Phenolic bearings Feature ●Reduces the frequency of lubrication. ●Maintains oil film, resulting in improved wear resistance. ●Has superior foreign matter immersion characteristics, impact resistance, and noise suppressing characteristics. ●Has superior chemical resistance and corrosion resistance. ●Materials for machining are also available. Service range Lubrication condition Service temperature range ℃ Allowable max. pressure P N/mm{2 kgf/cm2} Allowable max. velocity V m/s{m/min} Allowable max. PV value N/mm2・m/s{kgf/cm2・m/min} −40〜+100 20{204} Periodic lubrication Oil lubrication I.D. class 8 to 9 O.D. class 7 to 8 Length class 9 to 10 Machining accuracy (bushing) Classes here are in JIS standard. This product demonstrates satisfactory performance at the slide surface roughness of 6.3 to 12.5 μmRy. Dimensions may change due to thermal expansion, chucking pressure, moisture absorption deformation, etc. High accuracy is ensured if the product is installed on the housing and then ground. Condition: in atmosphere, bushing, shaft rotation. 3.35{201} 15.00{900} 2.45{1,500} 3.25{1,990} Relief angle Rake angle Nose radius( mm) carbide too(l JIS)・diamond(JIS) 5〜10゜ 5〜10゜ 0.40〜0.80 Lathe turning Cutting tool 60〜150 0.05〜0.10 0.05〜0.20 Condition Attention should be paid to dimensional variances due to thermal expansion, chucking, and bend of the material. ※Contact us for grinding and milling information. Speed Cut depth Feed (m/min) (mm) (mm/rev) 121Selection Guide Product Air Bearings Metallic Bearing Multi-layer Bearing Plastic Bearing Information Technical Corporate Profi le Information Slide Shifter