DYS, Bearings parts eddy current inspection process
Eddy current inspection process is adopted for inner and outer rings of bearings to prevent bearing failure due to material surface defects, guarantee the safety of automobile bearing in the main engine matching.
Tightening wheel of automobile bearing (1): Selection of bearing (DK Series)
DK series bearings developed and produced by DYS are mainly used on the plastic wheel of tensioner and on the idler gear of the tensioner . DK means that there is a knurled groove on the outer diameter of the bearing, it can effectively solve the looseness and slippage between the plastic wheel and the outer diameter of the bearing caused by the heat expansion in the operation, It also can prevents the axial movement of the bearing after the plastic thermal expansion at high temperature.
Tightening wheel of automobile bearing (2): Selection of bearing cage
The speed of the Tightening wheel is not constant, which changes rapidly with the engine running between 4000-12000rpm, which requires a cage that can withstand the impact of steel ball due to rapid speed change. The new PA nylon cage developed by DYS can prevent cage deformation, increase oil storage space and prolong bearing’s service life.
(iron cage: when the steel ball collides with the iron cage due to rapid speed change, resulting the cage in deformation and seizure, or due to cage deformation, the steel ball is stuck in heat expansion during operation, and the bearing fails.)
Tightening wheel of automobile bearing (3): Bearing sealing structure
The sealing structure of the tension wheel bearing has very high requirements, not only to ensure that the dust in the external environment does not enter, but also to prevent grease leakage under high-speed and high-temperature operation, and determines the service life of the tensioning wheel. Based on 20 years of deep groove ball bearing research and development experience, DYS has improved the design of bearings inner ring, seal ring lip, contact amount and pull-out force and so on, which can effectively prevent the bearing sealing ring from falling off and leaking grease in injection molding, and prolong the service life of tensioning wheel.
DYS, Bearing roundness measurement method
The roundness value is an important data to measure the grinding level of bearings.Japan’s first Sanfeng roundness meter is used ,to make the bearings noise ultra-low and prolong the service life.
DYS, Water pump bearing clearance measurement
Adopt the full-automatic production line, this video is only for the clearance measurement, to ensure the radial clearance difference of the two rows of raceways, make the bearing double row raceway bear the same load in operation.
DYS, Bearing steel ball precision sorting process
In order to ensure that there are no defects on the surface of the ball and the precision of the product is higher, the photoelectric separation process is needed for the ball matching the bearing .
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