Question

Chain sprocket Clamping supports 110 mm Rotating shaft Chain 252 mm62 The figure above shows a cantilevered chain idler sprocket driven by a chain that applies 5kN force. Select two identical 200 series ball bearings for Aand 8. The shaft rotates at 500 RPM. The shaft system is working for 8 hours a day every day (Use table 14.4 for hours). State the bore size of the bearings. TABLE 14.4 Representative Bearing Design Lives Design Life Type of Application Instruments and apparatus for infrequent use Machines used intermittently, where service interruption is (thousands of hours) 0.1-0.5 4-8 of minor importance Machines intermittently used, where reliability is of great 8-14 importance Machines for 8-hour service, but not every day Machines for 8-hour service, every working day Machines for continuous 24-hour service Machines for continuous 24-hour service where reliability 14-20 20-30 50-60 100-200 is of extreme importance

Answer 1

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