The differences are primarily in dimensional standards, slot sizes, and associated connector systems.
- European Standards (e.g., DIN, Bosch Rexroth, Item): Often based on metric dimensions (e.g., 20mm, 30mm, 40mm, 45mm series). The T-slot dimensions and associated nut/bolt sizes (e.g., M6, M8) are standardized within these systems. Connectors are widely available and interoperable within the same series.
- American Standards (e.g., 80/20, T-slotted framing): Often based on imperial dimensions (e.g., 1.5″ series, 3″ series) though many offer metric equivalents. Slot sizes and connector designs are proprietary to the brand but follow similar principles.
- Key Point: Connectors and hardware are generally not interchangeable between different brands/systems. When designing a system, it’s best to commit to one standard for all components.