NSK has marketed angular-contact ball bearings for use in industrial machinery such as pumps and compressors. The bearings have up to 90 percent longer life and can operate at a 15-20 percent higher speed than conventional standard products.
The high-specification products were only produced to order before. NSK has made them regularly available with the aim of stirring up demand for use in industrial machinery. Priced at about the same as conventional standard products, the hi-spec products are expected to attain annual sales of six billion yen by 2010.
The angular-contact ball bearings are to be used as a pair in parallel so that loads from both vertical and parallel directions to the rotational axis can be borne. Optimising internal structure and using larger steel balls enhanced their performance.
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