Sliding door rollers and rails

The role of sliding door rollers, in addition to rolling the door, is to support the weight of the door itself, which means that the rollers are exposed to a lot of stress, and as a result, they wear out after a while. If the door is damaged or incorrectly adjusted, the rollers wear out faster, and in extreme cases, they can even break down in a few months.
You can prevent rapid wear of the rollers by adjusting the door properly and opening and closing the door carefully. The weight of a sliding door can be 50-60kg, and this weight is all on the rollers, even when the sliding door hits the rear bumper.