The tiles on which the crankshaft and cylinder block are mounted in fixed brackets for bearing and lubrication are often called crankshafts.
The crankshaft bearing is generally divided into two types: bearing and flanged bearing.Flanged bearing bushing can not only support and lubricate the crankshaft, but also play the role of crankshaft axial positioning (there can only be one place on the crankshaft set axial positioning device).
When selecting bearing bush, it is necessary to check its fit clearance.When checking, the cylinder gauge and the micrometer measure the bearing bush and the journal, and the difference is the fit clearance.The inspection method of the bearing bush with clearance is: for the connecting rod, apply a thin layer of oil on the bearing bush, put the connecting rod on the corresponding shaft neck, tighten the bolt according to the specified torque value, and then swing the connecting rod by hand, can turn 1~1/2 turn, pull the connecting rod along the axis direction, there is no clearance feeling, that is, meet the requirements;For the crankshaft tile, the surface of each neck crane bearing with oil, installed the crankshaft according to the specified torque value tighten bolts, both hands to pull the crankshaft, the crankshaft can turn 1/2 turn, and rotation light, uniform without blocking phenomenon is appropriate.
