A plunger is a precision cylindrical component in injection systems that creates pressure to force molten material into molds.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Diameter | 20-150 mm | |
| Stroke Length | 100-800 mm | |
| Surface Finish | Ra 0.2-0.8 μm | |
| Surface Hardness | HRC 55-62 | |
| Operating Pressure | 100-200 MPa | |
| Straightness Tolerance | 0.01-0.05 mm/m |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
Component responsible for injecting molten metal into the die cavity under high pressure
The cylindrical container and delivery mechanism that holds and dispenses thermal paste in precise amounts.
A precisely arranged set of spring-loaded electrical probes used to establish temporary electrical connections with test points on electronic devices or printed circuit boards (PCBs) during automated testing.
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The plunger creates pressure to force molten material into molds during injection cycles, controlling material flow and dosage.
Plungers should be inspected every 500-1000 operating hours for wear, scoring, or surface damage, with preventive maintenance including cleaning and lubrication.
Hardened tool steels with surface treatments like nitriding or tungsten carbide coatings provide optimal wear resistance for demanding applications.
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