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Reducing operational costs with NSK

Company’s Hi-TF bearings helping to deliver substantial cost savings for a European cement plant

NSK’s Hi-TF bearings have recently solved a costly problem at a cement plant in Europe, which was experiencing regular bearing failures on a high-temperature fan operating at 150 degrees Celsius. Typically, during an 18-month period, the original split bearings used on the fan would fail at least three times: a failure rate that was considered unacceptable by the cement plant operator.

Examination of the application itself, and of the split bearings, revealed that a combination of high temperature and heavy load was causing the premature failures.
As a solution, NSK recommended the use of Hi-TF spherical roller bearings mounted in plummer blocks fitted with labyrinth seals. This combination is capable of continuous operation at 200 degrees Celsius under heavy loads. The success of this solution has resulted in a cost savings at the plant of €9,130 per annum on the operation of the fan.

Hi-TF has also proven its benefits on a screw pump for conveying slurry at a cement plant in the US. In this application, a large angular contact bearing was experiencing dust contamination that was causing excessive wearing of the raceways and increasing clearance to the point that, to avoid catastrophic failures, the bearings had to be changed prematurely, and on a regular basis.

NSK recommended their Hi-TF product as a solution to this problem, asserting that the material would manage the problem by offering resistance to the contamination. In addition, the new bearings would run more quietly and smoothly and offer better shock load protection.

Since installing the new Hi-TF bearings, bearing consumption at the plant has reduced by more than 50%. As a result of this success, the plant has since converted other locations to Hi-TF bearings.


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