Some car brands such as Toyota, Hyundai, Mazda and Honda use roller locks in their door stops. These clamps move along the rod thanks to a rotating metal roller. Some believe that this design guarantees durability. However, in practice the situation is not so clear-cut.
The roller mechanism requires constant rotation to operate freely. Manufacturers fill it with grease, which becomes an abrasive paste when dust gets in. This leads to wear on both the clamps and the limiter rod. In low temperature environments, the lubricant may harden, reducing its effectiveness.
As a result, the roller can get stuck, which leads to uneven wear on the limiter rod. This leads to unstable opening of doors and the appearance of noise when manipulating them - most often to a clattering sound.
We prefer to use one-piece clamps, abandoning the roller mechanism. This design ensures stable and smooth operation of the door, and the material of the clamps - injection-molded polyamide - is practically not subject to wear, which ensures a long service life of the parts.
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