a new option for an h1 axial piston pump in swashplate configuration was achieved by using new swashplate cradle bearings.ningbo zhongyi hydraulic motor co., ltd has any years of expereince about hydraulic motor, piston motor, hydraulic winch, hydraulic steering,pg电子下载-pg电子游戏 axial piston motor etc all kinds of motor production experience, quality assurance, welcome to choose our product. here, compact, low friction cylindrical roller bearings were used to support the drive shaft. compared to the previous version, the installation space and weight were substantially reduced and efficiency was increased by around 2 per cent.
cylindrical roller bearings with optimised rib contact schaeffler's new x-life (premium quality) cylindrical roller bearings with optimised rib contact have made an important contribution to these design improvements.
the special curvature of the roller end faces improves the contact geometry between roller end faces and the bearing ribs, minimising contact pressures. this enables the formation of a load carrying lubricant film, whereby roller end faces and ribs are completely separated by the lubricant. the rollers now slide on the lubricant film under axial load. this means that the new cylindrical roller bearings can operate with a much higher ratio of the axial load to the radial load. the ratio that is achievable is 0.6 i.e. a permissible axial load that is 60 per cent of the radial load. conventional cylindrical roller bearings normally withstand a maximum value of only 40 per cent of the radial load. at the same time, the frictional torque is up to 50 per cent lower, depending on the magnitude of the axial load. the benefits are lower operating temperatures, higher efficiency and reduced energy consumption.
h1 axial piston motors in swashplate configuration utilise low friction, optimised x-life tapered roller bearings. in addition, a newly developed steel sealing ring significantly improves the sealing characteristics of the hydraulic piston motor. in this way, the length and weight of the axial piston motor can be reduced. furthermore, the power losses have been cut by approximately 2 per cent compared to the previous version.
as a result, these bearings now yield up to 20 per cent higher basic dynamic load ratings resulting in an increase of around 70 per cent in basic rating life. at the same time, higher dimensional and running accuracies, combined with improved surface topography, reduce the frictional torque by up to 75 per cent compared to conventional bearings. the contact geometry of the inner ring rib and the roller end face were also redesigned in order to reduce friction. this reduces the stress on the lubricant in the bearing, enabling maintenance intervals to be extended. furthermore, the x-life tapered roller bearing operates at a much lower noise level.
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