Estimate the life (in hours) of an 02-series single-row deep-groove ball bearing with a 50-mm bore working under the following condition: axial force = 4 kN, radial force = 6 kN, outer ring rotating at 360 rpm, temperature = 50 °C, light impact, reliability = 97%. (6 points)
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2(67x)347892 (45)π√e34⁴
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