How can plastic bearings compare to ball bearings?
The thermoplastic resin used in SELECT hinge bearings is a time-proven bearing material with a low coefficient of friction. The thermoplastic bearing has excellent lubricity, maintains stability in moist environments and has chemical resistance to most oils and greases. Another advantage of these solid bearing blocks is complete surface contact and load sharing between each bearing used in a SELECT hinge. In addition to bearings, the continuous grip design of knuckle-free construction displaces kickback energy and load weight. Stresses imposed upon a ball bearing can easily exceed its design limits. Indicators are knuckle or pin bending, misaligned hinge forced out of line by warping frames or doors, or concentrated loads imposed by poor cut out locations. Ball bearings are vulnerable when this weight and stress is forced on a single ball, producing a flattening effect on the bearing ball’s surface or cracking the bearing. Failure is more common where corrosive action accelerates the a
