Core pins, Ejector pins & Sleeves

GS Machining Co., LTD offers a complete line of custom core pins, ejector pins & sleeves with different steels, such as core pins with customized ends, blade ejector pins, stepped ejector pins, straight ejector pins, nitrided ejector pins & sleeves etc. They are applied to cold forming, plastic injection and die casting industries. We has the engineering expertise and experiences to supply special and custom core pins, ejector pins & sleeves for our customer’s existing as well as new applications. Our good quality products result in our clients having improved in-plant productivity and quality performance as well as reduced manufacturing costs.

Also known as knockout and forged pins, use these pins to push parts out of molds. Pins are precision-ground to tight tolerances and hardened for strength and wear resistance. They makes plastic molding easier, preventing flash and resin waste. H13 tool steel pins resist rapid changes in temperature. M2 tool steel pins withstand high temperatures. 

Use core pins to form small holes, or use them to perforate parts. They can be machined to fit your application. They’re ground to tight tolerances. M2 tool steel pins resist wear and stay sharp at high temperatures. 

Use ejector sleeves with ejector pins to form holes, bosses, and other features in parts, and then push the parts out of the mold. Made from H13 tool steel, these sleeves are strong, hard, and resist wear. They’ve been surface hardened with nitriding, which adds more strength and wear resistance.