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Contact fatigue failure refers to the FAG bearing surface subjected to alternating stress arising from failure. Contact fatigue spalling in FAG bearing surface, often accompanied by fatigue crack, first from the contact surface following the largest alternating shear stress, and then extend to the surface to form different flake shape, such as point to point pitting or pitting flaking, peeling into small flakes shallow spalling. Due to the peeling surface gradually expanded, and often deep extended, forming deep spalling. Deep contact fatigue failure fatigue spalling is source of.
FAG bearing card phenomenon when the state
The so-called card injury is due to the surface damage of small burn FAG bearings produced in the sliding surface injury caused by part of the summary. Linear scars of slide surface, rolling surface circumference. Axis card injury toroidal roller end cycloid-shaped scars near the roller end surface of the.
FAG bearings cause card injury phenomenon
Excessive load, excessive preloading. Bad lubrication. Foreign body bite. The deflection of the inclined shaft, inner and outer ring. Shaft, bearing housing poor accuracy.
Clamping phenomenon when measures of FAG bearing
Check the load size. Pressure should be appropriate. Improving lubricant and lubrication method. Check the shaft, bearing box accuracy.
The main reason of fracture failure of FAG bearings are two factors deficiency and overload. When the load exceeds the limit strength of the material as a result of parts breaking overload fracture. Overload causes the main host of sudden failure or improper installation. FAG bearing parts of the micro-cracks, shrinkage, bubbles, large foreign materials, organizations and local overheating burn and other defects in severe shock or vibration overload will cause fracture in the defect, known as the defect fracture. It should be noted, bearing in the manufacturing process, the raw materials into the factory inspection, forging and heat treatment quality control, process control equipment can be correctly analyzed by the existence of the defect, the control must be strengthened in future. But generally speaking, failure mostly overload failure FAG bearing fracture usually appear.
FAG bearing in the work, due to the impact of external or internal factors, so that the original clearance change, loss of precision, and even cause " killed" known as the clearance change failure. External factors such as excessive interference, the installation is not in place, the temperature rise caused by volume expansion, instantaneous overload, internal factors such as residual austenite and residual stress in an unstable state are mainly caused by the failure of the clearance change.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 7011ADF NSK | 55 | 90 | 18 |
| 7911CDF NSK | 55 | 80 | 13 |