Ejector Leader Pins
Precision guide pins dedicated to ejector plate travel — ensuring parallel ejection and preventing plate tilt that causes pin breakage.
Ejector Leader Pins Products
Inlay Type (EGH)
SUJ2 | HRC 58-62 | g6 shaft
Striking Type (EGHC)
SUJ2 | HRC 58-62 | g6 shaft
Inlay — Long Series
SUJ2 | HRC 58-62 | g6 shaft
Striking — With Tap
SUJ2 | HRC 58-62 | g6 shaft
Oil-Free Ejector Leader Pin
SUJ2 | HRC 58-62 | g6 shaft
Inlay Type vs Striking Type — How to Choose
| Feature | Inlay Type (EGH) | Striking Type (EGHC) |
|---|---|---|
| Mounting | Press-fit with tapped hole | Press-fit with dowel hole |
| Positioning | Thread engagement provides pull-out resistance | Dowel pin provides precise angular location |
| Removal | Extract via tapped hole with puller bolt | Press out from opposite side |
| Best For | Standard molds, easy maintenance | Molds needing precise rotational positioning |
Selection guide: For a step-by-step approach to this decision, see our guide Inlay Type vs Striking Type Ejector Leader Pins — How to Choose.
About Ejector Leader Pins
Ejector leader pins guide the ejector plate assembly during the ejection stroke. Inlay type (EGH series) mounts via press-fit with a tapped hole for puller-bolt extraction. Striking type (EGHC series) uses a dowel hole for precise angular positioning. Both types use SUJ2 bearing steel at HRC 58-62 with g6 shaft tolerance.
Application Scenarios
Multi-Pin Ejection Molds
Molds with 10+ ejector pins need precise plate guidance to prevent uneven ejection and pin galling.
Why it fits: Ejector leader pins provide H7/g6 guided travel independent of ejector pin clearance, keeping all pins parallel.
Molds with Tight Ejector Clearance
Thin-wall molds with minimal ejector pin clearance cannot tolerate any plate tilt.
Why it fits: Dedicated ejector leaders reduce plate tilt to < 0.02 mm, preventing pin-to-bore contact.
Frequently Asked Questions
What is the difference between inlay type and striking type ejector leader pins?+
What hardness is recommended for ejector leader pins?+
How do I ensure proper alignment between ejector leader pin and bushing?+
Engineering Resources
Need Custom Ejector Leader Pins?
Precision ejector leader pins manufactured to JIS and DIN standards. Custom dimensions available. MOQ 1 piece.