Custom Ejector Pins
Precision ejector pins for injection molds, available in standard and custom sizes. Manufactured with tight tolerances, excellent straightness, and high wear resistance for smooth, stable ejection and long service life.
- Tight Tolerance & High Straightness
- SKD61 / H13 / SKH51 / Stainless Steel
- Nitriding & Coating Options
- Custom Sizes & Drawing-Based Production
Product Description
Introduction
Ejector Pins are essential precision components used in plastic injection molds to release molded parts safely and consistently from the mold cavity after cooling. They are designed to provide smooth and reliable ejection while minimizing the risk of part deformation, ejector marks, sticking, or damage during repeated production cycles. High dimensional accuracy, straightness, and surface finish are especially important for stable mold operation and long service life.
Our ejector pins can be manufactured in a wide range of diameters, lengths, head dimensions, tolerances, and material specifications to suit different mold designs and application requirements. Common material options include SKD61, H13, SKH51 and other tool steels, with heat treatment, nitriding, precision grinding, and polishing available depending on the required hardness, wear resistance, and working conditions.
Ejector Pins are widely used in automotive, electronics, home appliances, medical devices, consumer products, and other injection molding applications. In addition to standard sizes, custom ejector pins can be produced according to customer drawings or samples, including special dimensions, stepped structures, surface treatments, and tight-tolerance requirements for demanding mold applications.
Specifications
| Parameter | Specification |
|---|---|
| Product Name | Custom Ejector Pins |
| Material | SKD61 / H13 / SKH51 / Stainless Steel / Custom |
| Processing Method | CNC Turning / Heat Treatment / Precision Grinding / Polishing |
| Surface Finish | Precision Ground & Polished |
| Hardness | HRC 45-60 / Customized by Material |
| Diameter Range | Ø1 mm - Ø30 mm / Custom Sizes Available |
| Length Range | 50 mm - 500 mm / Custom |
| Straightness | ≤0.003 mm/100 mm |
| Surface Treatment | Nitriding / DLC / TiN / Custom Optional |
| Tolerance Grade | Up to ±0.005 mm / Custom Tolerance |
| Installation Type | Standard Head / Stepped / Custom Design |
| Operating Condition | Plastic Injection Molds / Die Casting Molds / Precision Tooling |
| Service Life | High Wear Resistance & Long Service Life |
| Customization | OEM & ODM Available |
Three Key Customization Aspects, Tailored to Your Needs
Flexible ejector pin customization for different mold designs and operating requirements.
Precision Manufacturing, Excellent Quality
Supports Custom Ejector Pin Specifications
Custom ejector pins can be manufactured according to your drawings, including diameter, length, head dimensions, stepped structures, special shapes, and tight tolerance requirements, ensuring proper fit with different mold designs and ejection systems.
Ensures High Dimensional Accuracy
Precision turning, heat treatment, and grinding processes ensure tight diameter tolerances, excellent straightness, and consistent surface finish, helping reduce sticking, uneven ejection, and premature wear during high-cycle molding.
Improves Wear Resistance & Service Life
High-grade tool steels such as SKD61, H13, SKH51, and stainless steel, combined with controlled heat treatment and optional surface treatments, provide high hardness, wear resistance, and stable performance during repeated molding cycles.
Multiple Materials & Surface Treatments Available
Different material and surface options can be selected according to mold conditions, including nitriding, polishing, TiN/DLC coating, and other custom treatments, helping improve wear resistance, friction performance, corrosion resistance, and service life.
Refined Service, Shortened Delivery Time
From design review to delivery, we provide dedicated one-on-one follow-up throughout the entire process.
Consultation → Provide Drawings → Design Review & Quotation → Order Processing → Quality Inspection → On-time Delivery → After-sales Follow-up
Our Advantages
Backed by over 25 years of engineering experience, our team offers comprehensive services—from customized mold design and precision machining to full-scale production—supported by a robust quality assurance system and proactive customer service. Certified under ISO9001, ISO14001, and IATF 16949, we continually strive for excellence in quality, innovation, and customer satisfaction.
Over 100,000 units in stock, with 2-hour shipment for standard products.
Implementing a three-stage inspection system—initial material check, in-process inspection, and final inspection.
Large inventory and quick turnaround, ensuring on-time delivery with 100% product inspection.
Application Range
The preferred choice across various industries.
FAQ
What are ejector pins used for?
Ejector pins are precision mold components used to push molded parts out of the mold cavity after cooling. Accurate dimensions, straightness, and surface finish help ensure smooth and stable ejection during repeated molding cycles.
What applications use ejector pins?
Ejector pins are widely used in plastic injection molds for automotive parts, electronics, home appliances, medical devices, consumer products, and other precision molded components.
What materials are available for ejector pins?
Common material options include SKD61, H13, SKH51, stainless steel, and other tool steels. Material and hardness can be selected according to wear resistance, operating temperature, mold life, and application requirements.
Can ejector pins be customized?
Yes. Diameter, length, head dimensions, stepped structures, special shapes, tolerances, materials, hardness, and surface treatments can be customized according to customer drawings or mold requirements.
What manufacturing processes are used for ejector pins?
Typical processes include CNC turning, heat treatment, precision grinding, polishing, and optional surface treatments such as nitriding or coating to achieve dimensional accuracy, smooth movement, wear resistance, and long service life.
