Die Land (Bearing) Length

Base land length

Base land length L0–

Local land equalisation

n = 2 keeps flow velocity uniform (land ∝ thickness²).
Local land length L2–

Guide values (aluminium dies)

Wall thickness (mm)Bearing length (mm)
0.8 – 1.52.5 – 3.5
1.5 – 3.03.5 – 6
3.0 – 6.06 – 10
> 6.010 – 14
Use short bearings on thin, fast walls; lengthen the land only where the metal must be slowed.