After bearing assembly quality analysis and judgment

Before the process of product targets. Check assembly environment temperature change is big. Standard parts and ring temperature was not enough. Grinding use standard components and finished goods inspection is unqualified. Bearing inside diameter size is too large, shall be awarded for the unqualified products, inner ring scrap. Inside diameter size is too small, should be convicted of unqualified products, but can rework grinding, make it become a qualified products. Bearing outside diameter size is too big, can pass to grinding, make its become qualified. But the diameter size is too small, should be convicted of unqualified bearing, outer scrap. Ring when grinding, plane on the reference face equal channel center has super bad. Inside and outside the channel surface wound, dirt. Inside and outside the ring datum injury. Inside and outside channel diameter changes in quantity is bigger. When the final goal, can make the outer deformation, or make steel ball surface card. May be a jerk, ball diameter difference is too big. Cage deformation. Groove shape deformation. Kia and Kea out-of-tolerance and scrap is less, even if is due to a single ring channel error about inner or outer diameter thickness changes. But the Sia and Sea out-of-tolerance and scrap. In order to reduce the loss, often through the parts back together down the assembly can be improved. Sd and Sd out-of-tolerance can only be scrapped. Riveting bearing internal right into the dirt. Riveting pressure is too heavy, right distorts the cage. Mould uneven, uneven compression of the cage, deformation. Rivet out-of-tolerance diameter, super length difference, make the rivet fit the same cage rivet deformation, deformation of the cage. Cage ball size out-of-tolerance, make steel ball rotation without enough radial clearance. The set of the radial clearance is too small. Individual appear mixed with ball, cannot turn, etc. Ring size separation of numerical inaccuracy, due to the separation of the accidental error, error of measurement system. Ring size separation of numerical inaccuracy, due to the separation of the accidental error, error of measurement system. Ring channel curvature radius error. Measurement of axial clearance, imbalance of the steel ball uniform, position is not correct, hand thrust is inconsistent. Bearing cleanliness was not enough. Ring channel geometry size deviation is too large. Maintains a center circle ultra difference is too big. Clearance is too large and too small for the unqualified products. Bearing rust bearing corrosion for appearance quality is not qualified. The produce is caused by the improper bearing parts keep producing rust; Assembly antirust technology in the process of implementation; Especially the rainy season the operator does not work gloves; Assembly work between air relative humidity;