Bobcat and Doosan Compete to Bring Us The Best Excavator

What Makes The Best Excavator


As large machinery manufacturing companies like Doosan and Bobcat begin to increase their competition against one another, the construction world is becoming more privy to some of the best pieces for detailed construction equipment.? With enormous capabilities and unbelievably strong operating systems, the excavator is one of the most common types of equipment being upgraded in order to be the best in its class.

Improvements include changes in size, new parts and/ or stronger engines. Bobcat and Doosan will stop at nothing to prove that their digger is the best in the industry.? Depending on your immediate job related needs, either machine could prove to be your most important piece of worksite specific construction equipment.

The Extreme Doosan DX140LCR Excavator

Competing with the likes of the Bobcat E63 and E85 excavators for sale, Doosan has come out with their stronger, faster and better performing DX140LCR-3.? A gigantic piece of machinery it is made of 16 tons of metal. This new Doosan model has greatly reduced its tail swing to provide less length for the excavator while greatly enhancing its mobility.

With specific characteristics that are unlike any specific Bobcat prototype, the incredible DX140LCR-3 is said to considerably improve the ability to develop virtually all construction locations; both residential and commercial.? Probably the best feature of the amazing new Doosan excavator model is the highly recognizable small tail swing.? Possessing a radius of just 5 feet, the DX140LCR-3 is regarded as ideal for small, congested job sites like narrow roads and areas that are close to buildings.? For example, this Doosan excavator is ideal for highway digging, as its small size will be able to prevent the buildup of any unnecessary roadway traffic.

The Competitive Compact Bobcat E-Series – E63, E85

Weighing in slightly lighter than the DX140LCR, barely less than 14 tons, the Bobcat E63 is definitely one of Doosan’s main competitors.? Also having a smaller tail radius than most excavators, this machine has an incredible tail radius of only 11.6 inches.? Proportionate to its weight, Bobcat has moved the top tier of the E63 to the back of the apparatus so that the materials that are being carried can rotate in balance with the excavator.

While the Doosan DX140LCR is still able to carry heavier loads than this model, the E63 does make a case for itself with the model’s amazing power.? Making the competition much stronger between the two construction equipment giants, Bobcat decided to give their excavator some of the strongest power in the industry at a 13.5% horsepower kick that can get up to as much as 59.4%.? Ideal for larger, heavier loads, the E63 will absolutely be able to handle just about anything that it carries; even at its relatively small size.? To make their extremely competitive machine even better, Bobcat added various supplementary flow currents and one extended flow to allow the variety of E63 attachments to perform better regardless of the specific job being performed.

Concrete Equipment: Maintaining Concrete Mixers

Concrete Mixing and Hauling Equipment

Concrete equipment is a large investment for a company. This is why it is so important for business owners to properly maintain their investment. One of the most commonly used pieces of equipment in the concrete industry is the concrete mixer. When properly maintained, concrete mixers will operate efficiently for many years.

Proper maintenance begins with the operator’s knowledge of machine operation and capability of troubleshooting potential problems. However, the most important aspect of ensuring that any concrete equipment has a long life is routine maintenance.

Concrete Equipment Maintenance Essentials

Concrete mixers are fairly simple by design, but do have several moving parts that require attention; the first of which is the drum. Dried concrete left inside the drum of the mixer can be detrimental to the machine itself. Over time, dried concrete will coat the inside of the drum and reduce its capacity.

While this sounds like a simple issue to fix, it is very difficult to remove dried on concrete residue from the inside of the drum. In fact, the drum can be damaged if attempts are made to remove dried material using hammers or chisels. The best idea is to take measures to prevent this build up in the first place.

Concrete can be removed from the inside of the mixers drum by using a pressure washer or simple garden hose with a sprayer attachment. Simply spraying out the inside of the drum while it is rotating will do the job. Obviously, this is not going to work well if the concrete is allowed to dry, so it is important to do this before the concrete begins to dry after every time the concrete mixer is used.

Concrete Machinery Monitoring Systems

No matter how well you maintain your concrete equipment, problems are bound to occur. Even the most experienced operators may not recognize the potential issue until it is too late. Modern technology allows machinery owners to see what’s going on inside.

Condition monitoring dashboards are becoming increasingly popular in the concrete industry as well as other industries that routinely use industrial machinery. These systems use innovative software which can provide information such as machine condition, life, potential issues and even location.

This is extremely useful for companies who have a large fleet of machines as the system will alert a central office of the specific machine affected and specifics as to the potential problem.

Recover Concrete Equipment That Was Not Properly Maintained

It is always a better idea to routinely practice preventative maintenance measures, but when concrete machinery has not been maintained properly, what can an equipment owner do?

Sure, you could get the jackhammer out and begin chipping away at the dried on concrete. This is likely to damage the equipment. However, options are limited at this stage in the game.

A better option could be to look into a company offering chemical concrete removal and pressure washing services. This method can be pretty expensive which is why preventative maintenance and proper cleaning of concrete equipment is so important.

There are even companies that offer concrete chipping services used to remove dried concrete build up. They use smaller cutting tools to chip away at the hardened concrete until it is all removed. Although effective, this is also a much more expensive alternative to preventative maintenance.

Side Shift Backhoes vs. Center Mount Backhoes: Which is better?

Structural Differences: Backhoe & Loader Design

Backhoe design across the world is pretty universal, or is it? As a matter of fact, there is a very interesting design preference that varies between U.S. and European contractors. This design difference is between side shift backhoes, which European contractors have long favored, and center mount backhoes, which North American contractors can’t get enough of.

The structural difference between the two backhoes is actually very minimal. In fact, “the tractors are identical from the rear wheel forward and from the back of the boom to the dipper and the bucket,” according to the senior product marketing manager of JCB North America, Jim Blower. The structural difference is found primarily in the rear frame of the machine.

Side Shift Backhoes

The design of this construction equipment consists of the backhoes kingpost being mounted on a carrier. This carrier is capable of sliding from one side to the other along frame rails with stabilizers, which are mounted on both sides and can extend vertically.

This design allows operators to maneuver in tight spaces and very close to the edge of buildings. This may be the main reason these side shift backhoes are so popular in Europe; they are very good at working in confined spaces.

Since introduced in Europe in the early 1960’s, this design has become standard with European contractors and may even be considered tradition.

Center Mount Backhoes

Center mount backhoes, also known as center pivot backhoes, are mounted at the center of the rear portion of the machine’s frame. The equipped stabilizers extend out and down from either side of the frame.

This rigid backhoe design really offers no specific advantages over the side shift design. In fact, when JBC, a major construction equipment manufacturer, introduced them to the U.S. in the 1970’s, contractors did not accept the new design. JBC had seen great success with the side shift design in other markets around the world, however North Americans did not accept a change from the center mount design they had become accustomed to.

Which Backhoe Design Is Best?

While the design of side-shift backhoes?has shown additional benefits over the design of center mount backhoes, including improved maneuverability, and improved visibility in tight spaces with decreased machine adjustment for bucket positioning. It turns out, equipment preference mainly has to do with tradition and geographic needs.

Obviously, the U.S. has gotten along with the center pivot design for years and still prefers it. There has been no major need for a change in design in North America. Europeans on the other hand really saw the benefits of a new arm and bucket design as well as the need for a machine that could easily be maneuvered in close places.

In conclusion, the appropriate structural design, when choosing backhoes is really determined by the need of the operator or contractor. Another factor to take into consideration is the availability of the different styles of backhoe. Depending on the area, one type of backhoe loader may be more abundantly available than the other, making it easier to find and less expensive to rent or purchase.

Tier 4 Engine Standards: What It Means For Modern Machine Tools

Emission Standards For Diesel Machinery

Diesel engines have always been efficient and reliable, yet they have also been known in the past for producing exhaust with high levels of particulate matter (PM) and nitrogen oxides (NOx). Over the past 15 years diesel engines have been transformed into one of the cleanest machines available today thanks to emissions regulations.
Tier 4 engine standards are government-mandated reductions in harmful exhaust gases for diesel-powered machines. Tier 4 standards require a significant reduction in emissions, particularly particulate matter (PM) and nitrogen oxides (NOx). PM is the black smoke or soot found in diesel engine exhaust and NOx consists of both nitrogen monoxide and dioxide gasses.

The U.S. Environmental Protection Agency (EPA) first started enforcing diesel exhaust emission limitations on off-road machinery with diesel engines in 1996 and stationary diesel-engine generator machines in 2006.

The first stage of Tier 4 standards began in 2011 with Tier 4 interim and will conclude with Tier 4 Final in 2015.

These regulations have been implemented in a series of steps called Tier levels which have each introduced more strict limitations on carbon monoxide (CO), nitrogen oxides (NOx), particulate matter (PM) and non-methane hydrocarbons (NMHC).

Machine Manufacturers Response To Emission Standards

Improvements made inside the engine were enough for machine manufacturers to achieve Tier 2 and Tier 3 standards. In fact, in-engine design changes have made off road diesel machinery the most fuel-efficient and perform better than ever before. These changes include:

  • High-pressure common-rail fuel injection
  • More precise fuel injection timing
  • Advanced electronic engine controls
  • Advanced turbocharging

Tier 4 standards, however, will require improvements to the exhaust aftermath systems to properly reduce NOx and PM levels.

The most practical and effective aftermath treatment technologies include selective catalytic reduction (SCR) to control NOx and diesel particulate filters (DPF), which capture the remaining particulate matter (PM).

Special Fuel Requirements

Machines that are fully compliant with Tier 4 standards will be required to use ultra low sulfur Fuel (ULSF) as well as CJ-4 low Ash oil. Keep in mind that CJ-4 low Ash oil can be used in all prior tier machines, which means that owners only need to keep one type of oil on hand.