The ordinary sliding door roller normal ly can slide 60,000 times, and a brand roller can slide over 100,000 times. The material of the roller is very important. Current, the material of the pulley on the market has 3 kinds. such as plastic pulley, metal pulley and fibre glass pulley. The plastic pulley has a hard texture, but it will get hard ,fade, and cannot slide after use a long time; The metal pulley is very strong, but it produces noise when it is getting touched with the track. Glass fiber toughness, good wear resistance, slide smooth. In addition, the good pulley design has two anti-jumping devices to ensure the safety of the sliding door. We must choose carefully.
If you are interested in it, you can know more about HUAJIAN stainless steel sliding door roller, the material we are use stainless steel 304/316 and NSK imported double bearings. Each set has been tested by the machine to slide over 100,000 times in the factory. And quality is guaranteed.