Guide / Molding Tolerances

Injection Molding Tolerances

Achievable tolerances for plastic injection molded parts

Tolerance Classes

Feature SizeStandard (mm)Precision (mm)
0-50mm+-0.25+-0.08
50-100mm+-0.35+-0.12
100-200mm+-0.50+-0.18
200-300mm+-0.70+-0.25

Material Shrinkage

PP: 1.5-2.5% | ABS: 0.4-0.7% | PC: 0.5-0.7% | PA6: 0.8-1.5% | POM: 1.8-2.5% | PMMA: 0.4-0.6%