'PEEK' performance rolling bearings from SKF
25 March 2010
SKF has developed a high performance range of ball and roller bearings with PEEK (polyetheretherketone) cages. Rolling bearings fitted with PEEK cages can be used in demanding applications, such as screw compressors, traction motors and wind turbines. As well as offering exceptionally high operating speeds, superior bearing qualities, reduced lubricant consumption and energy efficiency, PEEK cage bearings are also lightweight, making them a particularly attractive option for aerospace applications.
The proven thermal stability properties of PEEK make the new bearings ideal for use in applications where permanent operating temperatures exceed 120°C, yet they can also be used in areas where peak temperatures are at -250°C. In addition, PEEK offers considerably more resistance to aging in contrast to other polymer cage materials. In tests comparing PEEK alongside polyamide 6.6, PEEK showed no significant signs of aging under rigorous temperature and time variables, and as PEEK cages have a particularly low coefficient of friction, they are extremely wear resistant.
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