Ejector Pin Sets - Pins, Springs, Screw Plugs

These ejector pin set components are used inside punch and die assemblies to drive part removal after the forming cycle. By selecting a matched pin and spring length, you can maintain consistent ejection force and stroke across short- and long-reach punch layouts.

In automotive and appliance stampings where repeatability is critical, the modular spring-and-pin reinforced options help stabilize ejection under higher loading and frequent cycles. For progressive punch tooling, the availability of set packages (pins with springs and screw plugs) simplifies replacement during scheduled maintenance.

For general industrial punch applications requiring quick turnaround, engineers can purchase pin only or spring only to correct wear without replacing the full ejector system. The product’s defined stroke-related lengths—L (14–54 mm) and FL (0–104 mm)—make it suited for tuning ejection travel to the specific punch stack height and cavity depth.

The provided specification set focuses on dimensional compatibility (pin/spring lengths and applicable punch diameter), and does not include steel grade, hardness (HRC), or heat-treatment state. Because of that, material properties like wear resistance and toughness trade-offs cannot be stated from the current data.

For best practice, align material and heat treatment with your punch environment:

• High-wear punches typically benefit from wear-optimized tool steels and surface treatments (e.g., nitriding) when applicable.
• Reinforced ejector designs may require a tougher core condition to resist bending and chipping.
• When choosing between variants, prioritize fit to your ejector structure type (standard vs. spring/pin reinforced) first, then verify material and heat treatment with your tooling requirements.

If you share the steel grade/options used for this series in your BOM, we can add an exact HRC and heat-treatment discussion.

Select dimensions by matching the ejector travel and engagement geometry of your punch assembly. The pin length L is available in 14–54 mm, so choose the length that reaches the required ejection position without over-stroking.

Then match the spring behavior to the full punch configuration using FL (spring length), which ranges from 0–104 mm. If your design uses spring actuation, the spring length must correspond to the stack height so that the ejector returns and delivers consistent ejection through the cycle.

• Applicable punch diameter D: pick a pin set for the target punch diameter in 4–38 mm.
• Choose the ejector type: standard type, spring and pin reinforced type, large-diameter pin type, or spring reinforced type—use the one that matches your ejector construction.
• Sales form: set package (complete replacement) or individual parts (spring only / pin only) for maintenance.

Confirm tolerance/fit against your mold’s mechanical clearances; because no specific tolerance figures are provided in the current data, always validate the final fit with your supplier’s dimensional drawings for the selected option.