PRODUCT
How to reasonable thin-walled cross roller bearing limit load operation problem
by:Waxing
2020-08-31
Thin-walled cross roller bearing device needs pay attention to some things, such as vertical degree between shaft and shaft and bearing assembly precision or upside after condition and so on, below is the skill method is introduced.
Thin-walled cross roller bearings and the shaft's joint venture for the transition of the joint venture, seat and bearing hole of the joint venture for the clearance of the joint venture.
The center axis of the two-way bearing ring should be fixed on the shaft, in order to avoid related to migration of axis shift.
Bearing device, a popular condition is the condition of shaft changes in the majority, and inner ring and the shaft joint venture for win, bearing outer ring and bearing chamber of the joint venture for the clearance of the joint venture.
1)
Standard (
G)
Tolerance level bearing;
2)
Centripetal bearing only bear radial load bearing only bear axial load;
3)
= 0.
1C(
C the basic dynamic load rating of bearing)
;
4)
Rigidity of the bearing and the shaft;
(
5)
Normal lubrication cooling conditions.
When thin-walled cross roller bearings at 0.
1 c load conditions during operation, because the rolling element and raceway contact surface between the contact stress increases, the bearing temperature rise, the performance of the lubricant is relatively worse, therefore, the limit of bearing rotating speed will be reduced accordingly.
For C / = 10, due to the lower limit speed is very small, so it can not be considered, namely the f1 = 1.
Centripetal bearings for joint under load, because of its number increasing, the load of rolling body friction resistance increases, higher calorific value, lubrication and cooling conditions, but also increase the force applied to keep the rack, therefore, must according to the size of the bearing type and load Angle, the thin-walled cross roller bearing limit speed multiplied by a lower coefficient of f2.
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