|
|
HD Demolition and Sorting Grabs
Robust Innovation = Low total cost of ownership.
In 2001, Demarec introduced a new generation of demolition and sorting grabs to the market that can be widely applied for demolition, recycling and other applications. These grabs have already amply proven themselves and are in use at many prominent companies in the demolition and recycling industry.
Delta-box frame
In designing this new generation of grabs, Demarec has managed to take the gruelling conditions in this field fully into account. The grabs are characterised by their extremely powerful closing strength and the robust construction of the yoke thanks to a Delta-box frame with wide pivotal points using bearings and over dimensioned pins and bearings.
The Delta-box frame in combination with a single large diameter cylinder - for powerful closing - ensures low reactive forces at the hinging points. The application of a single cylinder makes the grab easy to service and reliable because of the simplicity of the hydraulic system. The shells are equipped with a perforated shell plate made of high-grade material as standard. This construction gives extra torsion rigidity to the shells, prevents material getting stuck in the shells and gives optimal visibility on the job.
Wearing parts
No concessions were made with regard to the wearing parts. The sides and the reversible, divided bottom blades are manufactured of extra thick, durable material. The divided bottom blades can also be interchanged up to 3 times so that wear at the corners can be dealt with and wearing-material is not wasted unnecessarily.
Twin rotation motors and filters
Demarec demolition and sorting grabs of the type DRG-28 to 45 are fitted with twin rotation motors for extra rotation power as standard. The DRG-17 to 22 are equipped for this and can optionally be supplied with a second rotation motor for use in special applications. All grabs are also fitted with filters in the rotation circuit as standard.
Working Safely
The application of the standard load safety valve in the grabs open/close circuit ensures safety when working with Demarec demolition and sorting graps. For example, unsafe situations when picking up and laying dock boards for example are avoided. Overheating of the oil is also avoided and the machine keeps up its cycle speed.
|
Main features:
 Delta Box Frame with robust end stops
Heavy duty rotation motor(s) with shock protection
Fill in top rubber closures(optional form DRG-17)
Double roller ring gear (on DRG-28)
Heavy duty side plates from H500
Pivots sealed grease in debris out
Wear blades made from HB500 steel can be turned 3 times
Load safety valve
Hydraulic cylinder end damping
Grease access from 1 position
Bolt on mounting bracket
Filters in rotation circuit
|
HD Demolition and Sorting Grabs
|
Foto DRG-65
|
|
Foto DRG-65
|
|
Foto DRG-65
|
|
Foto DRG-65
|
|
Technical data Demarec demolition- and sorting grabs DN/DV* and DS/DVS**
(* Perforated shells / ** closed shells)
Type |
DRG-17
DN / DS |
DRG-19
DN / DS |
DRG-22
DN / DS |
DRG-28
DN / DS |
DRG-36
DN / DS |
DRG-45
DN / DS |
DRG-65
DN |
Carrier weight * |
12-19 ton* |
13-20 ton* |
15-24 ton* |
20-32 ton* |
25-40 ton* |
35-50 ton* |
50-70 ton* |
Weight ** |
1025 / 1050 kg. |
1115 / 1145 kg. |
1315 / 1360 kg. |
1790 / 1840 kg. |
2010 / 2090 kg. |
2390 / 2490 kg. |
3865 kg. |
Capacity |
365 L |
460 L |
570 L |
825 L |
960 L |
1075 L |
1660 L |
Closing force |
50 KN |
48 KN |
56 KN |
70 KN |
80 KN |
80 KN |
140 KN |
Dimensions |
Opening |
1724 mm. |
1864 mm. |
1967 mm. |
2193 mm. |
2341 mm. |
2322 mm. |
2784 mm. |
Width |
850 mm. |
1000 mm. |
1000 mm. |
1100 mm. |
1250 mm. |
1400 mm. |
1500 mm. |
Height |
1344 mm. |
1377 mm. |
1458 mm. |
1536 mm. |
1629 mm. |
1733 mm. |
1798 mm. |
Hydraulic |
Opening/Closing
Pmax |
350 bar |
350 bar |
350 bar |
350 bar |
350 bar |
350 bar |
350 bar |
Flow |
100 L/min |
100 L/min |
100 L/min |
120 L/min |
120 L/min |
120 L/min |
200 L/min |
Rotation
Pmax |
170 bar |
170 bar |
170 bar |
170 bar |
170 bar |
170 bar |
170 bar |
Flow |
40 L/min |
40 L/min |
40 L/min |
40 L/min |
40 L/min |
40 L/min |
40-60 L/min |
* depending on lifting capicity of carrier / ** weight including standard bracket
Subject to change without notice
|
|
|
