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General structure of high-temperature bearings: mainly refers to the bearing structure is in accordance with the common, the use of high temperature materials such as high temperature bearing steel, the design of the bearing, the main heat-aligning ball bearings, high temperature deep groove ball bearings.
High-aligning ball bearings: two raceways in the inner and outer ring raceways between spherical, equipped with cage guided by the two balls. Aligning ball bearings can withstand high radial load, but also can withstand a certain degree of axial load.
Bearing with pressed steel cage, with high quality white high temperature grease lubrication can be used for temperatures from -40 to +300 ℃ environment. Meet within 300 ℃ working conditions.
Bearings are usually produced by ordinary level tolerance and clearance is much larger than ordinary bearings, it is often not suitable for high speed applications. But usually at 100 rev / min speed of long-term operation.
High-temperature deep groove ball bearings: no internal cage, only rolling body composition; meet about 300 ℃ working conditions, according to the general level production tolerances and is much larger than ordinary bearing clearance, it is often not suitable for high speed applications, belonging to high temperature and low speed bearings, usually at 200 rev / min speed of long-term operation.
Special structure bearing temperature: not only materials of high temperature materials, and more from the structure to achieve a high temperature environment automatic clearance compensation, such as a coil spring bearings.
| Product Model | Inside Diameter | Outside Diameter | Thickness |
| NN3030 NTN | 150 | 225 | 56 |
| NN4930 NTN | 150 | 210 | 60 |