Basics of long reach or high reach excavators

Long reach excavators and high reach excavators are digging machines with an extended boom that is longer than the typical excavators. A long reach excavator is built to expand the working range or operating radius of the digger so that the excavator can reach higher, deeper and farther. The long reach diggers are widely used in many working conditions, including mining, wharfs, warehouses, building demolition, dredging canals or rivers, flood relief and other special conditions. Compared with the structure of a typical excavator, the long reach excavator differs in the following aspects such as main boom, extended boom, boom cylinder, extended boom cylinder, excavator bucket and bucket cylinder. The extended boom is attached on the top of the main boom and a corresponding cylinder is added to the working device, with a cylinder control system added in the cabin so that the operator can control the extension and retraction of the boom. 

The long reach excavators have many advantages. For instance, the long reach excavators can significantly increase the working efficiency with high mechanization thus save more labor cost for the customer. To use long reach excavator in construction can greatly ensure the safety of the operator because, with the extend boom the operator can keep a longer distance from the object and reduce the danger of being hurt especially in housing demolition projects. More importantly, the long reach excavators are more practical, capable of meeting the requirements of many demanding jobsites. 

Small excavator recommendation - Sany SY135C C10 hydraulic excavator

With total weight of 13500kg, 0.55m³ standard bucket, Sany SY135C is the star product of small excavators. The annual average sale of SY135C over the past four years is more than 600 million yuan. The upgraded C10-series SY135C provides multiple configurations for different countries and regions with features of high reliability, remarkable performance, convenient maintenance, environmental protection and high safety. With ROPS and FOPS safety certifications, SY135C excavator totally meets the safety standard in China, Europe and North America. The rigorous test system requires every Sany excavator to pass over 2,000hrs field operation test, core components like cab, hydraulic parts, digging device to pass 800 thousand times fatigue test.

SY135C10 small excavator’s customized Isuzu 4JJ1 engine with rated power of 73kW@2000rpm produces strong performance and high fuel efficiency. The small excavator is equipped with a whole set of Kawasaki hydraulic system and original components, and ensures reliable operation even under hostile conditions. The key structures of SY135C10 have all been reinforced and upgraded to increase wear resistance and service life of the boom, arm, bucket, rotation and undercarriage. Standard bucket is made of wear-resistant steel plate, attached with heavy-load rock type bucket teeth, which can increase bucket’s service life to 50%. The digging force of SY135C10 excavator bucket is 92.7kN, of excavator arm is 66.13kN, which is higher than that of the same tonnage competitors. In addition, its fuel consumption is 8.5% lower, yet the operating efficiency is 7.9% higher than same tonnage excavators of competitors. To sum up, SY135C10 hydraulic excavator is more cost efficient and suitable for the customers especially for works at mining jobsite.

How to choose a second-hand excavator with high performance

Choosing a satisfying second-hand excavator needs comprehensive inspection. We should not only check the appearance of the excavator but also take a test drive which can detect the real performance of the second-hand excavator.

An excavator has a self-inspection process when it is connected to power like cars. During the process, various kinds of sensors begin to work, gathering information such as water temperature, oil temperature and fault message. The information and some fault codes can be displayed on the monitor. The time period for the self-inspection varies among different types of excavators, but the average time is approximately ten seconds. When you start the engine of the excavator, you can stand by the engine to hear its sound. The engine quality can be detected from whether the engine has abnormal sound. The starting time can also reflect some problems. Long time starting indicates that there exist some problems of the engine. The service life of the engine will be greatly shortened due to the enormous electric current.

The engine’s exhaust condition should also be examined. If there is a small quantity of black smoke when the excavator just starts and disappears later, it is the normal condition due to the insufficient burning of diesel.  But if there is white smoke, it indicates the abnormal situation. The white smoke might be water vapor or diesel vapor. Water vapor means water flows into the cylinder and diesel vapor means the engine’s time distribution has some problem. Some diesel has been ejected without burning.

Medium excavator recommendation - SY215C10 hydraulic excavators

SY215C-10 hydraulic excavator is a new generation excavator designed by Sany Heavy Machinery. It weighs 22,000kg featuring low fuel consumption, low noise and high reliability. SY215C-10 hydraulicexcavator is capable of reducing 7-15% fuel consumption with customized engine, hydraulic system, and leading AOCT auto optimization control technology. Customized Mitsubishi 4M50 engine provides powerful rated power of 118KW@2000rpm and maximum torque of 580Nm@1600rpm. The customized hydraulic system is more energy saving and environmentally friendly. SY215C10 medium excavator adopts the AOCT - auto optimization control technology to ensure the core components always at the best working conditions.  

SY215C10’s core components are of reinforced structure and high strength and they have been tested by rigorous validation system, ensuring high reliability under any operating conditions. New cab with upgraded air conditioner and comprehensive protection can significantly reduce noise and improves operating comfort and safety. SY215C10 excavators is in line with the China stage III emission standard which equals to EU III, suitable for various jobsites across the globe. Moreover, SY215C-10 hydraulic excavator is also the winner of Red Star Design Award and Golden Pin Design Award. There are also two high configuration versions of SY215C10 excavator: the fully electric controlled excavator and the hydraulic hybrid excavator – targeted for customers from different countries and regions.  

Contrastive Analysis of Wheel Excavator and Crawler Excavator

Wheel excavator moves easily, and mainly for some small project in the city, cannot be used in very soft ground. Crawler excavator cannot move on the road, but can work in some muddy ground, and will not be trapped. Crawler excavator’s machine body is bigger and work efficiency is higher than wheel excavator.

Crawler excavator

Advantages: Efficient for large contact ground area, muddy construction sites, wet lands and other area that easily get stuck; crawler excavator’s comparative heavy self-weight makes it go various more extensive areas; for the crawler belt made of medal ware, the crawler excavator is also qualified to work in those inadequate operating conditions.

Disadvantages: Comparatively speaking, crawler excavator needs more investment, and its movability is not that good with the fastest designing speed being 5-7KM/H, and long distance movement can only depend on dray.

Wheel excavator:

Advantages:  less investment, faster speed with normally 40-50KM/H.

Disadvantages: narrow using range, mostly used in road and city engineering projects. It cannot be operated in mines or muddy wet terrain, and the climbing ability is not very good. So for now, most customers are tend to choose crawler excavators.