DLC coated for minimal friction and wear
The mechanical stress placed on an ejector results in high friction between the ejector and the guiding hole and can cause wear or jamming of the ejector. DLC (diamond-like carbon) coatings reduce the coefficient of friction and increase surface hardness. This significantly improves wear resistance, process reliability and service life – particularly in the case of a high number of strokes, increased wear or dry-running.
DLC coated ejectors offer up to 10 times longer service life.
- High wear resistance due to low coefficient of friction
- Enhanced corrosion resistance due to high chemical resistance
- Excellent dry-running properties
- No abrasion on light-coloured or transparent plastic parts
Typical applications:
- Cleanroom production
- Visible part production
- Processing of abrasive plastics
- Moulds with a high number of strokes
Nitrided and oxidation-coated for wear protection and corrosion resistance
Nitriding gives the ejector pins, e.g. E 1741, a very high surface hardness, which prevents fretting in the mould and significantly increases wear resistance. The combination of a hard surface and a tough core ensures a long service life – even at mould temperatures of up to 500 °C. It also makes the surface more resistant to moisture and corrosion.
Nitrided-oxidation coated ejectors offer additional benefits: The oxide layer reduces static and sliding friction, prevents molten metal from sticking and minimises abrasion. This improves wear and corrosion protection as well as sliding properties, and increases mould service life and emergency operating properties. As the oxide layer wears away slightly over time, these ejectors, e.g. E 1740, are primarily used in die casting.
Typical applications:
- High mould temperatures
- Standard moulds in everyday use
- Applications with increased abrasive load
- Die casting moulds
Stainless steel for corrosive environments and cleanroom applications
Our stainless steel ejector pin E 17109 is manufactured from corrosion resistant 1.4112 steel and is designed for environments where conventional tool steels are subjected to severe corrosion. It offers consistently high corrosion resistance and reduces rust formation even when the equipment is not in use. This makes the ejectors particularly suitable for moulds used in cleanrooms. They are also the ideal choice for the processing of chemically aggressive and gas-forming plastics.
Typical applications:
- Cleanroom production
- Medical injection moulded parts
- Processing chemically aggressive and gas-forming plastics
HSS material for high thermal and mechanical loads
HSS (high speed steel) ejectors are designed to withstand high levels of wear and high temperatures. They offer high hot hardness and compressive strength, and retain their mechanical characteristics even under prolonged thermal and mechanical stress. This reduces plastic deformation and significantly extends service life when working with abrasive materials. Particularly when used in small dimensions, 1.3343 offers very high elasticity, which prevents ejector breakage.
Typical applications:
- Glass fibre reinforced plastics
- Processing plastics containing abrasive fillers
- High mould temperatures
- Ejectors and cores subjected to high mechanical loads
Anti-rotation design for precise contour guidance within the mould
Our anti-rotation ejectors and core pins ensure consistently precise positioning within the mould thanks to their anti-rotation mechanism. This reduces burr forming and ensures consistently high, reproducible component quality. All core pins feature a g6 tolerance ground along the entire length of the shaft, enabling particularly precise alignment. The standard anti-rotation feature also reduces design and manufacturing costs, as only the contour needs to be machined.
Range of ejector solutions
Get an overview of our wide and well-structured range.
