To determine whether the door and window bearings need to be replaced, the following key phenomena can be comprehensively judged to promptly identify problems and avoid affecting use:1、 Abnormal operating statusSmooth rotation: When manually rotating the bearing, if there is jamming, sticking, or o
Nylon fiber: has good noise reduction effect and is suitable for indoor sliding doors/windows, but has moderate wear resistance and a load-bearing capacity of ≤ 45kg. It is recommended to use lightweight doors and windows (such as wardrobe doors).All copper/stainless steel: Strong load-bearing capacity (up to 120kg per wheel), corrosion-resistant, suitable for heavy or humid environments such as balconies and kitchens, but there may be slight noise when the copper pulley is pulled.Polymer compos
