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First Doosan DX530LC-3 Crawler Excavator in England

First Doosan DX530LC-3 - Forest Pennant | Doosanequipment EMEA

Waterloo, Belgium. Forest Pennant Limited has purchased the first Doosan DX530LC-3 52 tonne crawler excavator in England for the company’s quarry in the Royal Forest of Dean in Gloucestershire. Supplied by Kellands (Plant Sales) Ltd, the Authorised Dealer for the Doosan, Bobcat and Montabert ranges for South West England, the new Stage IIIB compliant DX530LC-3 excavator has replaced an existing Doosan DX520LC model that had been working at the quarry for the last five years.

The quarry produces Royal Forest Pennant Natural Stone, a unique source of carboniferous Pennant sandstone with naturally hard wearing properties and exceptional whole life costs.  It boasts a stunning mix of colours and is available with various finishes to create a number of beautiful effects. Royal Forest Pennant Natural Stone has been a popular and traditional building and paving material that has been in use for centuries in the UK. 

The new Doosan DX530LC-3 excavator is used in various stages of the process to win the stone, first removing overburden down to the layers of Pennant stone to a depth of 18-19 m from the top of the quarry. The excavator then works on the rock together with a Doosan DX340LC crawler excavator equipped with a Montabert XL2600 hydraulic breaker. 

Much of the overburden and rock produced by the two Doosan excavators is loaded into an articulated dump truck which carries it away from the face to a dumping point higher up in the quarry. Here the material is separated using a screening bucket and provides a source of building stone and cropped walling stone, which form part of the product range available from Forest Pennant.  

The DX530LC-3 and DX340LC excavators are also used to lever complete blocks of Pennant stone weighing 12-14 tonne away from the quarry face, which are then lifted by the DX530LC-3 excavator to a point where the company’s Doosan DL420 wheel loader can pick them up and take them to the top of the quarry.  Here the blocks are loaded on to lorries to be taken to the Forest Pennant factory a mile away in the forest for sawing and other processing work.      

The quarry also uses a Bobcat E80 excavator supplied by Kellands and equipped with a drilling head and compressor system to produce holes in the Pennant stone, which are then utilised to split the rock using a hydraulic feathering machine. In this way, blocks of blue and mixed colour Pennant stone are produced in the quarry using the traditional plug and feather method, which reduces the risk of fracture. 

Many of the oldest cities and towns in the South of England and South Wales have been paved with Pennant stone, which has a naturally hard-wearing surface with a good slip skid resistance, though it can also be specified with a shot blasted finish which gives an enhanced slip skid resistance.

Natural Pennant stone from the Royal Forest of Dean has been used on a variety of historically important projects such as Hampton Court and the interiors of the St Johns and Exeter Colleges at Oxford University.  More recently, Pennant Paving has been laid at Cheltenham Ladies College, The British Empire Museum in Bristol, Cardiff Memorial Park, Bristol and Gloucester Docks, Maesteg Town Centre, Minehead High Street, St John’s Church yard in Cardiff and Tewkesbury Town Centre.
With depots in Bridgwater and Camelford in Cornwall, Kellands (Plant Sales) Ltd is the Authorised Doosan, Bobcat and Montabert Dealer for Somerset, Dorset, Wiltshire, Devon, Cornwall, North Somerset, Bath and North East Somerset, Bristol and Gloucestershire. 

A Leader in the 50 Tonne Class

The DX530LC-3 excavator offers the strength and productivity needed for heavy duty work such as large-scale earthmoving, moving rock, pulling down buildings, secondary breaking, loading haulers and pipeline projects found on quarrying and mining, highway, aggregate, demolition, utility and general construction projects.  The wide undercarriage on the DX530LC-3 model produces exceptional stability and unmatched lifting capabilities and this is combined with an extra heavy counterweight and a short front end to deliver more breakout force. 

To ensure heavy duty robustness, reinforcing plates have been added on the boom end. The shape of the boom end has been modified and the material for the boom main boss has been changed to cast steel to improve durability.  Reinforcement plates on the inner boom and arm have been repositioned to improve structural strength. As a result of the additional reinforcement, the operating weight of the DX530LC-3 excavator has been increased by 1300 kg compared to the Stage IIIA model. 

The heavy duty undercarriage on the DX530LC-3 excavator features reinforced track links, track springs, sprockets and bushings.  Both narrow (2.99-3.49 m) and wide (3.39-3.90 m) variable undercarriages are available.  A unique feature in this class is the extended width of 3.9 m on the wide variable undercarriage, which provides more stability, particularly important when digging or truck loading from the side.

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