NSK develops ultra-high speed angular contact ball bearing used new cage “SURSAVE™” for main spindle of machine tools
Resource from: NSK Likes:253
Nov 17,2016
NSK Ltd. (NSK; Headquarters: Tokyo, Japan; President and CEO: Toshihiro Uchiyama) today announced that it has developed an ultra high-speed angular contact ball bearing using the new SURSAVE cage, which can be applied to the NSKROBUST™ series of ultra-high speed angular contact bearings for the main spindle of machine tools.
NSK will exhibit this product at JIMTOF 2016, the 28th Japan International Machine Tool Fair, to be held at Tokyo Big Sight (Koto Ward, Tokyo) from Thursday, November 17 to Tuesday, November 22, 2016. NSK is targeting 500 million yen in global annual sales for its ultra high-speed angular contact ball bearing NSKROBUST series for the main spindle of machine tools in 2018.
The new bearing meets the increasing demand for higher accuracy, higher speed rotation and design for the environment of bearings for the main spindle of machine tools, thereby helping to improve their productivity and environmental friendliness.
In terms of running accuracy, the demand to reduce RRO (repeatable runout) and NRRO*(non-repeatable runout) in particular is growing stronger. At the same time, there is strong demand for higher speeds and lower heat generation.
NSK had already introduced the NSKROBUST series of angular contact ball bearings, which are superior to standard bearings for their high speed, low heat generation, and high rigidity. Now, however, NSK has successfully developed its new cage SURSAVE for use with the NSKROUBUST series, reduced high-speed NRRO by half and reduced heat generation by 20%, thereby achieving high performance.
Reducing NRRO of the main spindle of machine tools improves the process surface quality, and reduced heat generation helps suppress thermal displacement, thereby improving processing accuracy. In particular, this new product is very beneficial to the surface quality of dies and gears processed by machine tools. In addition, these higher levels of performance improve the overall efficiency of machining.
(NSK)
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