Shoulder ejector pinsare critical components in injection molds, designed to ensure smooth and reliable ejection of molded parts. Featuring a reinforced shoulder structure, these pins deliver superior strength, alignment, and longevity compared to standard ejector pins. AtMouldParts.net, we manufacture shoulder ejector pins to exacting standards, using premium materials and advanced heat treatment for unmatched performance in high-stress molding environments.
Key Features & Benefits
Reinforced Shoulder Design
Providesenhanced stabilityduring ejection, reducing deflection and wear.
Prevents lateral movement, ensuring precise alignment in complex molds.
High Wear Resistance
Made fromSKD-61 (JIS) orH13 (DIN) tool steel, hardened to50-54 HRC.
OptionalSKH-51 (High-Speed Steel) for extreme abrasion resistance (up to62-64 HRC).
Customizable Dimensions
Standard diameters: 2mm–25mm (custom sizes available).
Shoulder height and diameter tailored to your mold design.
Surface Treatments
Nitriding, TiN coating, orDLC coatingfor reduced friction and extended service life.
Global Compliance
MeetsISO 9001andRoHSstandards. Compatible with automotive, medical, and consumer electronics molds.
Technical Specifications
Parameter
Details
Waiwai
SKD-61 / H13 / SKH-51 / Custom Alloys
Hardness
50–64 HRC (varies by material)
Tolerance
±0.005mm (precision grinding)
Surface Finish
≤ Ra 0.2μm (mirror polish optional)
Temperature Range
-50°C to +600°C (heat-treated variants available)
Applications
Ideal for high-precision, high-volume injection molds requiring reliable ejection: