Drive shaft maximum speed 5000rpm, oil lubrication, load is not big. Our other models of synchronous belt drive is matched with ball bearings, try sliding bearings (we call sleeve), showed the problem is increasing, the temperature rise increases torque and wear increase, this feeling is not reasonable collocation problems, because the synchronous belt requires relatively large feeding force piece, this will bring the radial the pressure between the shaft and the sleeve, resulting in large friction. Only their own analysis, the lack of theoretical basis.
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Sliding bearing lubrication conditions are more severe, low speed, high, can not establish oil film, lost the bearing function, but only support (Critical lubrication, between dry friction and lubrication), ha ha. For such a high speed, use deep groove ball bearings. Your analysis is correct, but the tensioning force of the synchronous belt will not be too large.
As long as the speed, load, lubrication and other conditions meet the working conditions of sliding bearings, it is appropriate.The speed is 5000rpm, too high.
