ntn bearings the characteristics of radiators and spiral
ntn bearing the type of very many, but the heat is still on so few products, there is no new progress. Recently several major manufacturers bearing radiator radiator made a new technology, such as water waves bearings, magnetic bearings, bearings and other core of several of the basic forms of bearings are to be improved. Principle of operation has not changed much.
When used to run the initial, low noise, manufacturing costs are also low, but this is a serious bearing wear, the life there is a big gap between the more ball bearings. And such bearings to use over time, due to the reasons for oil seal (computer radiator products are impossible to use high-grade oil seals, generally, is that ordinary paper seals), oil will gradually evaporate and the dust will be imported into the NSK bearings, which led to slower fan speed, noise increases and other issues, the serious fans but also because of bearing wear caused by eccentric lead to severe vibration.
Such bearings are made from spring steel. Spring steel annealing temperature is 3500C. Therefore, the annealing temperature of 1800C than a ball bearing steel (100C6) temperature sensitivity difference. Material when the temperature reaches above the tempering temperature will lose its extreme hardness. Therefore, spring steel is more suitable for high-temperature operation.
Spring steel has good flexibility, so it is easy to install, inner ring through the help of two hook-shaped wrench installed in any location, inside the inner tension can be fastened to the shaft. Elastic materials processing tolerances h9 or h1l of the inner ring is relatively easy to achieve. That used in the inner ring on the high processing costs would be eliminating the need for.
Such bearings durable and are subject to dirt, iron filings, water, and falling of the iron with water to form the weak acid is modest. Thin-walled spiral circle of large diameter rolling parts leaving a relatively large space. These components will be able to roll the material stolen and external pressure to the gap in the spiral coil. This will maintain the bearing surface of the rotating movement to keep clean.
The main advantage of spiral bearing outer ring can be reused several times, making it as soon as the effects due to the temperature arising from damage and bending to its re-processing is possible. In this case, bearing also need to be adjusted. Structural design of such structures, rather than only the spiral outer bearings need to be set to change all of the other bearing components can be used again. Bearing is adjusted by 1 mm in diameter sizes to increase the magnitude carried out in a way. For example: When the diameter increased from 105mm to 106mm, the spiral also need to increase the outer diameter lmm to install it.
This situation can be repeated until when the diameter 110mm. This can be repeated processing of bearing outer ring 5 times. This cost savings can be substantial, especially in all the other bearing components can be reused six times circumstances.
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