More intensive Quality Control (QC), potential for higher scrap rates, and longer cycle times.
injection-moulding-tolerances-din16742-2013.pdf - Xometry Pro
is a specific accuracy class within this standard. In the hierarchy of tolerance groups (TG1–TG9), TG5 is considered a "precise" or "standard precision" class for high-quality injection moulding.
It reduces the need for excessive tolerance notes on engineering drawings by establishing standard, accepted, and reliable ranges. din 16742 - tg5
tolerance group, which is a critical benchmark for high-precision plastic injection molding.
It classifies materials into different accuracy groups, which then determine the applicable Tolerance Group. Deep Dive into Tolerance Group 5 (TG5)
: When designing for TG5, engineers must account for the specific resin tolerance More intensive Quality Control (QC), potential for higher
Consult your molding partner during the DFM (Design for Manufacturing) stage to align your TG5 requirements with their machine capabilities and tool design.
The standard is divided into :
DIN 16742 TG5 represents the standard of excellence for technical plastic parts. It provides engineers with a realistic guide to what can be achieved through disciplined manufacturing. By selecting TG5, designers ensure that their parts will function correctly in complex assemblies while avoiding the prohibitive costs of over-engineering the tolerance requirements. It reduces the need for excessive tolerance notes
: Standards like DIN 16742 facilitate the interchangeability of tool holders across different machines and manufacturers. This not only offers flexibility in production planning but also helps in reducing inventory levels, as a standard tool holder can be used in various machines.
: Dimensions affected by the opening/closing of the mold or moving parts (like sliders), which require larger tolerance ranges. Super-Ingenuity Implementation Recommendations
Draft angles: 1.0° per side unless noted All dimensions in mm; burrs max. 0.2 mm
TG5 allows minimal drafts if surfaces are polished, but too little draft increases wear and variability.
production level. It is tighter than the standard TG6 but less extreme than the tool-room limits of TG3 or TG4. Application