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Bearing in the use process, the problem is a very common thing. But the problem is divided into parts, some parts of the bearing is vulnerable and some very good. As the bearing is very prone to problems. And again things that simply cannot repair problems.
So bearing in use must be careful to protect the bearings, so as to avoid the bearing are ahead of the end of life.
Bearing fracture cracks often exist several, mostly originated in the bearing surface, water jacket, black corrosion crack source zone, but fatigue arc zone morphology is not clear.
Scanning electron microscopic observation of high times on the location of fracture, it is found that the characteristic has the following several points:
1 magnification observation, visible micro zone appeared a lot of scallop morphology.
2 the crack front is fatigue curve and the existence of a large number of corrosion pits.
3 different angles to observe the scallop with different morphology, scallop is formed by connecting different crack plane.
4 accept the highest stress, for the water jacket and the cylinder heat rib contact at.
5 production of observations, induction heating, the workpiece and the sensors are often not a ignition point contact, very sensitive to noise generated by bearing.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 80BAR10S NSK | 80 | 125 | 40.5 |
| 75BTR10H NSK | 75 | 115 | 36 |