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    Polyp grab

    Demarec Polyp grab-DPG is an orange‑peel grapple built to move bulky scrap quickly. Choose 3, 4 or 5 tines with two kinds of 360° rotation. The standard Polypgrab handles 450 L with 16‑22 t excavators, while the HD series scales up to 5 000 L for 20‑200 t carriers. Protected cylinders, a slewing‑ring rotator and HB400/500 wear steel deliver high closing force and long service.
    Polypgrab – DPG

    Maximum closing forceuse
    and optimum weight &
    performance ratio for daily

    Polypgrab – DPG

    Key features & benefits

    Rotation

    Robust, fully integrated rotation
    With sturdy swivel head and internal hoses against hose breakage
    Optimal power transmission
    Integrated pressure relief valve against overload
    Gland and bevel sealed; rotating feed-through and motor directly accessible (P30 – P200)

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    Main carrier

    Wrap around design of main carrier protects hydraulic cylinders and hydraulic hoses 100%
    Good access to hoses and oil distributor thanks to easily removable covers
    Mounting of radiation detector or magnet possible

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    Hydraulics

    Maximum working pressure 350 bar
    Hydraulic cylinders damped to protect against impact loads
    Non-return valve prevents accidental pressure drop
    Piston rod protection encloses the piston rod and prevents damage
    Use of high pressure hoses, this allows even the highest pressures caused by impact to be absorbed

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    Polypgrab – DPG

    Weight / performance ratio

    All components are optimized for tension and weight with FEM: means 10% weight reduction with 20% stress reduction
    Use of fine grain steel with high strength
    All wear plates made of highly wear resistant steel 400 HB

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    Bearings

    Generously sized pin joints reduce surface pressure
    Induction hardened pins are in steel bushings
    Tooth heads and main bearings are widely spaced to accommodate deformation and reduce surface pressure in the bushings
    Lateral pressure discs provide solid support for the teeth and reduce wear to a minimum

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    Tooth

    Slim, contour optimized tine guarantees ideal penetration
    No protruding parts, ensures perfect removal of the goods
    Huge limit stops relieve the hydraulics in extreme positions
    The ideal tooth circumference prevents materials from sticking that could potentially damage the cylinder
    Forged tips of teeth 500 HB

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    TypeMachineweight*Flow open/close (l/min)Rotation Pmax (bar)Number of tinesVolume (litre)Closing fore** (kN)Self weight of tines (kg)Opening A (mm)Width E (mm)Height C max. (mm)
    DPG-2216 – 22 t50-1503204 – 545017810 – 1145191013701545
    DPG-3020 – 30 t120 – 2001704 – 5600271310 – 18302130 – 22901520 – 15251980 – 2065
    DPG-40-326 – 40 t120 – 2001703600381390 – 20452200 – 28351420 – 18602065
    DPG-4026 – 40 t120 – 2001704 – 5800381530 – 21402165 – 21901430 – 15602170
    DPG-5136 – 50 t200 – 3502004 – 51000331570 – 23002440 – 28301610 – 18702200 – 2500
    DPG-8050 – 80t200 – 3502004 – 52500402500 – 34202770 – 31802010 – 23252770 – 3155
    DPG-12080 – 120 t200 – 350140 – 25053000614220 – 47003200 – 39102280 – 23903180 – 3350
    DPG-P-2518 – 25 t50-2001703600381650 – 17802200 – 22501420 – 15601775 – 1780
    * Machine weight is indicative.

    Download our free
    DPG brochure

    Want to know more about our Polyp grabs?
    Download the brochure for more info by filling out the form below.

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    Frequently asked questions

    Can’t find what you are looking for?
    Here are the most asked questions and their answers!

    What demolition recycling scrap handling and construction attachments are included in Demarec’s product range?

    Demarec has separate product lines with the PremiumLine and ProLine for Demolition and Recycling, Scrap and Recycling,  and Construction. Key tools include demolition and sorting grabspulverizersmulti quick processors, two cylinder concrete crushers, hydraulic hammersmulti shears, drum cutters, scrap shears, rail cutters, polyp grabsrotatable pulverizers, tilt rotators and more. 

    How does the patented DemaPower System boost the power and cycle speed of Demarec tools?

    The four chamber DemaPower cylinder delivers about twenty five percent more closing force and cycles faster because two chambers work on the in stroke and two on the out stroke. A double acting speed valve keeps oil moving both ways, so the jaw opens and closes in roughly five seconds while staying within normal excavator pressure.

    Where can I obtain spare parts maintenance, repairs for my Demarec attachment or who do I call for urgent technical assistance if my Demarec tool develops a fault on site after purchase?

    Demarec runs an in house service department and After Sales portal. For help you can phone +31 485 442 300 option 2 for parts or option 3 for service, or write to parts@demarec.com and service@demarec.com. Local dealers worldwide can also supply parts and support.

    I would like to represent Demarec what steps should I follow to become an authorised dealer?

    Fill out the short enquiry form on the Become our dealer page. Demarec will review the details and respond directly.

    Does Demarec offer training facilities to dealers?

    Yes we have our inhouse training center for service and sales.

    How do I determine which Demarec attachment model fits the size and hydraulic capacity of my carrier excavator or material handler?

    Every product page and brochure includes a technical specification table that lists carrier weight windows, tool weight, oil flow and pressure. Match your machine to those ranges or ask Demarec service for confirmation. Example: DRG selector grabs cover carriers from ten to eighty tons with detailed specs-per-model.