EMO Hannover 2019, 16 - 21 September

    EMO Hannover 2019, 16 - 21 September
    Parts, components, accessories

    Spindle bearing with air cooling spacer

    With cooling nozzles in an intermediate ring or spacer, NTN-SNR reduces the temperature difference between the inner ring and outer ring in the spindle bearing. This is claimed to increase the speed by 20 percent.

    27 Jul. 2017
    Cooling air nozzles in the spacer ensure uniform cooling over the entire circumference.

    According to NTN-SNR, the design principle of their air cooling spacer for spindle bearings is the integration of an air inlet in the spacer to lower the inner ring temperature and therefore reduce the temperature differences between the inner and outer rings. As the French company explains, the air inlet angle on the nozzle has been developed for optimal, smooth and unidirectional diffusion. This system reportedly helps to reduce preload increase due to temperature decrease. As a result, the manufacturers maintain, a 20-percent increase of maximum speed is achieved and it is now possible to raise the applicable preload for greater rigidity by a factor of three. In addition, the concept is said to ensure low noise levels.

    Contact: Carol Donat, NTN-SNR
    Tel. +33 4 50653027
    E-mail: carol.donat@ntn-snr.fr
    Website: www.ntn-snr.com

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