N N Engineering is a specialised sleeve ejector pin manufacturers and suppliers in Pune; we are proud to be known as the top manufacturer of high-quality Sleeve Ejector Pins. Having years of experience in precision engineering, we are experts when it comes to developing durable, reliable, and precision-crafted ejector solutions in the injection molding industry.
Sleeve ejector pin is a hollow tubular pin applied in injection moulding to eject a part out of a mould. A sleeve ejector is used to surround a core and exert even pressure on it instead of pushing on the part like typical ejector pin. The design avoids damage or deformation and is very helpful in cylindrical or fragile moulded parts. Sleeve ejector pins are made of high-strength tool steel and are designed for reliable and long service when used with repeated moulding.
Types of Sleeve Ejector Pin:
Being as premier sleeve ejector pin manufacturers in Pune, in industry these is the topmost types which are given below.
- Straight Sleeve Ejectors: These are plain, cylindrical ejector pin embedded in an empty sleeve. They offer a consistent force of ejection around the core pin thereby suitably used to eject parts with easy circular shapes such as bosses or hollow Pillers.
- Stepped Sleeve Ejectors: These ejectors have an inner pin of the different diameters and a sleeve. This design permits a better-controlled multi-point ejection force, which is beneficial in parts with more intricate geometries or fragile enough to need force to be exerted at varying levels to prevent damage.
Technical Specifications of Sleeve Ejector Pin:
We have added below a technical sheet of sleeve ejector pin in Pune that provides more technical information such as:
| Parameters |
Specification |
| Material |
H13 / SKD61 tool steel |
| Hardness |
50–60 HRC (heat-treated) |
| Surface Finish |
Polished ID & OD |
| Coating |
Nitrided / TiN / DLC (optional) |
| Dimensions |
Standard & customised (OD, ID, Length) |
| Tolerance |
±0.002 mm |
| Standards |
DIN / ISO / JIS |
Features of Sleeve Ejector Pin
One of the trusted sleeve ejector pin suppliers in Pune, we use advanced technologies.
- Materials That Last: We start with superior materials like various tool steels, which are well-known for their toughness and resistance to heat. This ensures our pins can handle the intense demands of repeated ejection cycles without wearing out.
- The Right Hardness: Each pin is hardened to 50–60 HRC. This precise level of hardness is what gives our pins their long-lasting durability, so you can count on them to perform reliably, even during heavy-duty production runs.
- Perfect Fit Every Time: Our sleeve ejector pin manufacturers in Pune are precision-machined to maintain tight dimensional tolerances. This guarantees a seamless fit and minimal friction inside the mould, which translates to smoother operation and a longer tool life for you.
Benefits of Sleeve Ejector Pin
These are the benefits provided by our sleeve ejector pin manufacturers in Pune.
- Consistent Part Release: Our sleeve ejector pin distributes ejection force evenly around cylindrical features and ensures clean removal.
- Core Protection: We manufacture sleeve ejector pin that protect delicate cores from bending or damage that often occurs with point-load ejector methods.
- Long Service Life: High-grade materials and precise heat treatment allow endurance through millions of cycles in sleeve ejector pin suppliers in Pune.
- Multi-Process Versatility: Ideal for plastic injection moulding, we manufacture sleeve ejector pin that are suitable for die casting and rubber moulding.
- Lower Maintenance Costs: Our sleeve ejector pin has surface coatings and wear resistance that reduce operational downtime and replacement needs.
Applications of Sleeve Ejector Pin
As the expanded sleeve ejector pin suppliers in Pune, our sleeve ejector pin has various applications.
- Plastic Injection Moulding: Our sleeve ejector pin is useful for ejecting components with central bosses, like caps, connectors, and housings. They encourage a clean release every time, without any distortion or damage to the part.
- Die Casting: Our sleeves are crucial for maintaining the shape of parts precisely during ejection.
- Automotive Tooling: These are the ideal choice for moulding dashboard knobs, handles, and mounting projections that need a perfectly precise ejection.
- Consumer Products: From bottles and kitchenware to packaging items with circular projections, our sleeves deliver consistent and reliable performance.
- Electronics Components: Our sleeve ejector pin manufacturers in Pune is widely used in delicate parts, such as connectors, sockets, and casings, ensuring a smooth release and preserving crucial surface quality.
N N Engineering is a leading sleeve ejector pin manufacturers and suppliers in Pune. Our sleeve ejector pin are precise, durable and reliable to provide an ejection control that is flawless in all of our moulding cycles Our ejector sleeve, ejector sleeves and sleeve extensions, steel ejector sleeves for plastic mould making, stepless ejector sleeves are machined to very high standards, using premium materials, and they safeguard cores, offer a smooth ejection process, and last longer, which is why they are our top pick in the injection of plastics, die casting, and delicate component moulding.
Are you willing to take your molding to the next level? Get in touch with us
