Ejector pins are essential for reliably releasing molded parts during the die-casting, plastic molding, and stamping processes. This guide highlights five high-quality ejector pins that balance strength, wear resistance, and precise dimensions. Each option is designed for steady performance under typical molding conditions, helping maintain part accuracy and tool life.
The table below provides a quick snapshot of the selected products, including brand and key specs to help you compare at a glance.
| Product | Brand | Length | Shank Diameter | Head Diameter | Material |
|---|---|---|---|---|---|
| Utoolmart 2mm Dia Round Tip Steel Straight Ejector Pin Punch | Utoolmart | 150mm | 2mm | 6mm | 65Mn |
| uxcell 10Pcs Straight Ejector Pins, 1mm Dia | uxcell | 100mm | 1mm | 6mm | SKD61 |
| HARFINGTON 4pcs Straight Ejector Pin 1/16″ Dia 250mm | HARFINGTON | 250mm | 1/16″ (≈1.6mm) | 6mm | GCR15 |
| JSMOUID SKD61 Straight Ejector Pins, 1/8″ Dia | JSMOUID | 101.6mm | 1/8″ (≈3.18mm) | 6.35mm | SKD61 |
| uxcell Straight Ejector Pins, 1.5mm Dia | uxcell | 150mm | 1.5mm | 6mm | 65Mn |
Utoolmart 2mm Dia Round Tip Steel Ejector Pin
The Utoolmart ejector pins feature a long, round straight shank made of 65Mn steel with a hardness range around HRC 48-50. With a total length of 150mm and a head diameter of 6mm, these pins are suited for standard mold cavities that require dependable release action. The 2mm shank diameter provides a balance between strength and flexibility for typical die-casting and plastic molding applications. These are commonly used where wear resistance and consistent projection are needed to prevent part sticking.
uxcell 10Pcs Straight Ejector Pins, 1mm Dia
These 100mm long ejector pins are made from SKD61 die steel, offering excellent harden-ability and wear resistance. The 1mm shank diameter makes them suitable for tighter gates and smaller molds while maintaining structural integrity. The round tip and hardened surface provide reliable release performance and reduced risk of deformation during repeated cycles. They are described as having high elastic limit and good machinability, making them a good all-around choice for mechanical maintenance and mold work.
HARFINGTON 4pcs Ejector Pins, 250mm
HARFINGTON offers four 250mm ejector pins crafted from GCR15 with a hardness around HRC 55±5. The longer length supports deep molds and more complex parts, while the GCR15 alloy provides high wear resistance and resilience against deformation. The pins’ smooth surface and precise head dimensions reduce the risk of scratching workpieces and improve ejector reliability in demanding die-m mold environments. These pins are commonly used where high wear resistance and longer service life are required.
JSMOUID SKD61 3/16″ Ejector Pins, 127mm
JSMOUID’s SKD61 ejector pins are designed for high stability and long service life, featuring a 3/16″ shank diameter and a 127mm length. The SKD-61 material is known for hardness and abrasion resistance, making these pins well-suited for environments requiring durable release components. They are applicable across mold manufacturing, leather processing, and machinery maintenance—particularly when consistent pin projection is critical for part release and process reliability.
JSMOUID SKD61 3/8″ Ejector Pins, 127mm
These SKD61 pins have a larger 3/8″ shank diameter and 127mm length, offering increased strength for larger or tougher mold cavities. The robust material provides excellent hardness and wear resistance, supporting long service life in demanding production lines. They are intended for molds that demand dependable ejector performance under higher loads and abrasion. The design emphasizes stability, precision, and resistance to deformation during repeated cycles.
Utoolmart 3mm Dia Round Tip Ejector Pin, 100mm
With a 3mm shank and a 100mm length, this Utoolmart option provides a compact choice for tighter molds while maintaining the 65Mn steel composition and HRC around 48-50. The sturdy straight shank and round tip help ensure predictable ejector action in medium-length molds. It serves well in cost-conscious projects where standard wear resistance and reliability are essential for cycle consistency.
Buying Guide: Key Purchase Considerations
- Material and hardness: SKD61 provides superior harden-ability and wear resistance compared to 65Mn, which may be adequate for lighter-duty molds. For high-volume production or abrasive plastics, SKD61 variants are often preferred.
- Length and shank diameter: Longer pins offer reach in deep cavities but may flex under load. Match length to your mold depth and ensure shank diameter supports the required rigidity without excessive clearance.
- Head size and shape: A 6mm head diameter is common for stable ejection; larger heads improve contact area but may require larger cavities. Ensure compatibility with your ejector mechanism and cavity geometry.
- Surface treatment: Quenched and tempered surfaces reduce deformation and increase wear life. Check finish quality to avoid scratching or marking parts during ejection.
- Tolerance and fit: Precision pins with consistent diameters minimize looseness in the ejector system, reducing misalignment and ensuring uniform ejection force.
- corrosion resistance and environment: Some molds encounter corrosive substances; choose materials with suitable corrosion resistance for extended tool life.
- Cost vs performance: SKD61 pins typically command a higher price but deliver longer service life in demanding applications. For standard molds, 65Mn pins can be a cost-effective option.
- Maintenance and availability: Consider brands with readily available replacements and compatible tooling to minimize downtime and job interruption.
When selecting ejector pins, aligning the pin material, geometry, and hardness with your molding process is essential for consistent part release and tool longevity. The five options listed here cover a range of common needs—from everyday, cost-effective pins to high-wear SKD61 variants suitable for challenging production lines.