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Test data W W Journal rotation test <Testing conditions> Bearing dimension : φ40×φ44×R30 Mating material : S45C(surface roughness 0.6μmRy) Pressure: 10.3N/mm{2 105.0kgf/cm2} Velocity : 0.922m/s {55.3m/min} Test time : 80hrs. Lubrication : grease is applied at assembley Journal oscillation test <Testing conditions> Bearing dimension :   φ40×φ44×R30(Oiles Drymet ST)   φ40×φ50×R30(Oil impregnated sintered            bronze bearing) Mating material : S45C(surface roughness 1.5μmRy) Pressure: 19.6N/mm{2 200.0kgf/cm2} Velocity : 0.023m/s {1.40m/min} Oscillating cycle : 100cpm Oscillating angle : 20° Oscillating frequency : 300,000cycle Lubrication : grease is applied at assembly 0.3 0.2 0.1 0 Wear amoun〔t mm〕 0 20 40 60 80 Test time〔hrs.〕 0.3 0.2 0.1 0 0 20 40 60 80 Test time〔hrs.〕 Coefficient of friction〔μ〕 1.0 0.8 0.6 0.4 0.2 0 Wear amount〔 mm〕 0 50 100 150 200 250 300 Oscillation frequency〔×103cycle〕 Oil impregnated sintered bronze bearing Oiles Drymet ST 138 Selection Guide Product Information Plastic Bearing Multi-layer Bearing Metallic Bearing Air Bearings Technical Slide Shifter Information Corporate Profi le