ARP Plunger is produced using high strength Cu-Be alloy.
The plunger is fixed to its holder using a special bayonet locking design.
Inner channels are specifically designed to achieve optimum cooling during the injection process.
ARP Plunger is available in 2 versions depending on casting process and application:
ARP-F: Solid plunger with bayonet fitting
ARP-R: Ring plunger with bayonet fitting and a replaceable frontal ring
Assembly allows minor misalignment
In comparison with a conventional lock system between plunger and holder, the coupling is done using a special bayonet system. This one provides a small functional play between both holder and plunger, compensating for small misalignments.
Cycle time reduction
Compared with a conventionally made plunger, the cooling arrangement is optimized, resulting in more efficient and homogenous cooling and solidification of the biscuit.
Assembly and removal of the ring are straightforward and can be done directly on the machine, avoiding any waste of time.
Longer lifetime
The assembly of the ARP plunger with its holder has been specially designed: the holder itself rests against the inner surface of the plunger absorbing the total injection pressure and avoiding cracks and fatigue.
Diameter 40 - 200 mm (1.50" - 8.00")
ARP plungers are made using a thermally precipitation hardenable copper alloy with specially modified chemical composition.
We manufacture a selection of plunger rings for ARP model plungers. Read more…
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