Important Notes on Tolerances for Profiles and Connectors

In certain applications, there are situations where dimensional accuracy plays a significantly larger role than in other cases, due to the fact that, for example, when installing telescopic slides. If connector tolerances are also included, our recommendation for industrial precision applications is to use more suitable and more expensive systems. With connector heads, it is also the case that for many customers, for aesthetic reasons, it is more important to cover the complete cut edge of the profile, so that the visible connector cube is at least not smaller than the profile's outer dimensions.

Generally, in technical designs, it must be considered that even the (permissible) profile tolerances can already lead to deviations within the system.

The tolerances for the external dimensions of our profiles are factory-defined as follows:

If you buy bare aluminum profile the dimensions are again slightly different, as material is stripped during anodizing. However, these deviations from the anodized dimensions are not very large, so they would not be relevant for standard applications. For example, bare 25x25 mm profiles have dimensions of 25.2 - 0/+ 0.3 mm.

Our production standards for XD Tube Connectors made of polyamide comply with a factory standard based on DIN 16742, which we use as a basis for the production of our plastic parts.

Deviations from the nominal dimension are unavoidable in the production of plastic molded parts. The production-related dimensional deviations have several causes:

1) Non-tool-bound dimensions are dimensions that are formed by the interaction of movable tool elements, e.g., wall thickness and bottom thickness dimensions or dimensions that are influenced by inserts or sliders.