Angular Contact Ball Bearings with SURSAVE Cage - Ultra-High Speed NSK has developed new ultra-high speed Angular Contact Ball Bearings using the new cage "SURSAVE" for the main spindle of machine tools. This cage is applied to the NSKROBUST series of ultra-high speed angular contact bearings. Low NRRO, low heat generation and high-speed performance are achieved with the newly developed cage"SURSAVE" Product Features • Optimised internal design • Lower vibration and runout of the cage reduce NRRO* by half • 20% reduction of heat generation compared to conventional bearings under high-speed conditions • 20% faster than conventional bearings *NRRO = non-repeatable runout Benefits • Higher accuracy • Higher speed rotation • Improve productivity • Environmental friendly • Reduction of NRRO improves the process surface quality and reduction of heat generation helps to suppress thermal desplacement Condition Description • Green environment • Machine Tools High Accuracy High Speed Description Nominal bore diameter Bearing type Dimension series Type Cage Seal Arrangement Preload Accuracy Grease