Doosan’s excavators and wheel loaders are in demand at various mining operations, including the Doosan DX300 and DX520 excavators, which are currently used for material processing and handling at a platinum-group metals and chrome operation in Rustenburg, in the North West.
In October 2020, South African distributor of Doosan construction equipment DISA Equipment sold its 3 000th unit, a Doosan DX520 excavator, in South Africa to plant rental specialists TKR Operations, which is part of a joint venture with Medkoeriers, explains Doosan MD Darrel Holton.
Additionally, a Doosan DL550A wheel loader is currently in use at an iron-ore mine in the Northern Cape, while a Doosan DA30 articulated dump truck is in use at a manganese mine in Gauteng.
Holton notes that the Doosan DX800LC-5B tracked excavator is built for harsh mining conditions and its new engine and intelligent hydraulic system deliver maximum productivity and ensure minimum downtime. Manufactured with the finest quality components that have been customised precisely for large equipment, this machine offers best in class power and durability.
Another key product in the company’s offering, the DISD wheel loader series, launched in 2020, perfectly integrates world-class technology with a new low speed engine.
These “robust” machines have also been designed to create a higher level of efficiency to save fuel, while maintaining optimum power levels.
The DISD SD200 wheel loaders with an operating weight of 10 400 kg and the SD300 wheel loaders with an operating weight of 16 800 kg, are ideally suited for safe and efficient use in light to medium applications, including quarries, sand works and general roadworks.
The SD200 wheel loaders have WP6G125E22 engines, with a rated horse power rating of 92 kW/2 200 rpm and maximum torque of 500 Nm. The SD300 machines are fitted with a WD10G220E23 engine, with a rated horse power rating of 162 kW/2 000 rpm and maximum torque of 930 Nm.
The instrument panel has been upgraded and the centralised and combined switch is positioned near the multi-angle, adjustable steering wheel. This enables easy control of the electrical components, for precise operation of the loader, Holton states.
“What’s also notable about these machines, is the streamlined appearance, wide operating room and broadened rearward visual field. The new design, with a spacious cab, not only contributes to greater work efficiency, but improves operator comfort and safety on site.”
Other key features include noise reduction technology and an efficient air-conditioning and air-circulation system, which enables continuous operation and uninterrupted work under elevated temperatures.
Holton highlights that these machines have a solid frame structure for improved strength and reliability and a protective rear radiator grill moulding, with a solid steel bar structure, to prevent damage from the outside.
The new radiator design improves cooling performance and enhances durability of parts, including the engine and pumps. A high-efficiency cooling fan, with seven non- isometric blades, is designed to increase airflow and reduce noise levels.
In addition, the SD200 and SD300’s working attachments and articulated pins are accurately sized to position the force bearing area correctly and to increase diameters of the boom pin roll and front and back frame articulated pin roll.
Further, the new series, with a convenient top-end maintenance management system, has been designed for quick and effortless maintenance. The open-end hood can be opened completely, to easily refill oil or gas and to replace inner parts, and is also convenient for daily maintenance procedures.
Doosan earthmoving equipment is supported by a technical advisory, maintenance and support service through DISA Equipment’s national branch and distributor network. The company also provides efficient delivery of parts throughout Southern Africa to ensure minimum downtime, Holton concludes.