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NSK bearings are used, should check whether the rolling elements and Raceway in flakes, cages are Yu Songkuang, inner ring around the edges are complete, outer ring raceways is cracked.
Inner ring and roller Assembly mounted after the outer ring, roller roll should fall into the middle of the road, the first ascent of less than 1.5mm. There is an unqualified, that should not be used. This type of NSK bearings are separable in the outer ring. Normal state, the inner and outer ring raceways and rollers should be no broken wear marks, pits and deep; cage deformation and can be roller, keep your ring; inner and outer ring raceways and rollers clearance shall not exceed 0.06mm.
Normal state, two roller should be no peeling off injuries and severe wear, ball should be no breakage and pitting; cage deformation, not with two roller washer touch, and your ball firmly together.
As most enterprises in innovation system construction and operation, research and development and innovation funding, human resource development is still at a low level, combined with industry-oriented research institutes toward enterprises, the State has no input into the industrial generic technology research, thus weakening the functions of industry-oriented research and development.
Therefore, the industry "two weak-two little" focused study on the basic theory of the weak participation in international standard-setting efforts weak and little original technology, less proprietary products. We design and manufacture technology is basically simulate decades consistency. Product development capacity, and performance: Although the supporting rate of 80 per cent to the domestic host and high-speed railway passenger cars, luxury cars, computers, air conditioners, high levels of support and maintenance of the mill and other important host NSK bearings, basically imported.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| 32226U NTN | 130 | 230 | 64 |
| 30226U NTN | 130 | 230 | 40 |