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Oiles 425 Phenolic bearings for underwater applications Feature ●Has superior wear resistance. ●Has superior foreign matter immersion characteristics, impact resistance, and noise suppressing characteristics. ●Has superior chemical resistance, and corrosion resistance. ●Usable in water or chemicals. ●The 250 material for machining may be used. Contact us about the handling methods. 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} underwater room temperature 15{153} 15{900} 4.90{3,000} Condition: underwater, bushing, shaft rotation. ※Contact us about the handling besides normal temperatures. 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 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. Attention should be paid to dimensional variances due to thermal expansion, chucking, and bend of the material. ※When used in water, fitting must be design considering swelling characteristic. Please add swelling correction value at page 345-346,when you set a fitting. ※Contact us for grinding and milling information. Speed Cut depth Feed (m/min) (mm) (mm/rev) Certified according to NIPPON KAIJI KYOKAI as the material of Non-metallic rudder bearing. (Approval No.NKBR022, Validity Period: Oct.2017) 123Selection Guide Product Air Bearings Metallic Bearing Multi-layer Bearing Plastic Bearing Information Technical Corporate Profi le Information Slide Shifter