Middle Support Pin
Precision Middle Support Pin for Injection Molds – High Strength & Dimensional Stability
We supply high-precision middle support pins for plastic injection molds, die-casting molds, and stamping dies.
Manufactured from high-strength tool steel or pre-hardened steel, our pillars feature excellent compressive strength, wear resistance, and long service life.
Product Parameters (Specification)
|
Item |
Description |
|
Material |
20CR/S50C / 1.2311 / 1.2738 / P20 / SKD61 / Custom Steel |
|
Hardness |
HRC 30–45 (pre-hardened type) / HRC 58±2 (hardened type) |
|
Diameter Range |
Ø16 mm – Ø100 mm |
|
Length Range |
25 mm – 300 mm |
|
Surface Finish |
Polished / Nitrided / Ground Surface |
|
Tolerance |
±0.01 mm |
|
Application |
Injection molds, stamping dies, die-casting molds |
Product Features
High Compressive Strength
Effectively supports the mold base and ejector plate under heavy load.
Excellent Dimensional Stability
Machined with tight tolerances to ensure even mold opening and closing.
Product Details
Each support pillar is CNC-machined and ground on both ends to ensure parallelism within ±0.01 mm.
High-quality pre-hardened steel provides superior rigidity and long lifespan under repetitive mold cycles.
Optional surface treatments such as nitriding or polishing are available to enhance wear and corrosion resistance.
We can also produce custom heights and diameters according to customer drawings or specifications.

FAQ
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