The newly introduced Case CX330 weighs more than the 9050B model by almost 5,000 pounds, and this extra-added weight is due to the larger counterweight it contains, and the new design of the car body that completely encloses the swing-system.

This extra weight that has been added to the Case CX330 contributes to the increased power and boost in the over-front capacity. The increased boost combined with the higher level of hydraulic pressure of the travel circuit give this excavator model a 16% increased boost in the draw bar pull. All in all, it will mean more power and strength to handle poor terrain and very steep grades.

Also, the new Case CX330 excavator has numerous improved features such as the enhancement of the digging linkage. The new model has an upgraded boom and arm that is deeper in the cross section and will accommodate a higher digging force. This was accomplished by incorporating a v-groove type of welding, which is put into place by robots, and then it is 100 percent ultra sound inspected.

More improvements were made to the boom foot and boom to arm pivots, which now use improved brushings, new types of plated pins and new dust seals. This combines to make a more efficient and durable model, and makes it easier to care of its assembly. The new chrome pins are harder and therefore stronger, which contributes to the digging linkage durability.

The standard and basic 6 cylinder and 8.3 liter engine is used in the Case CX330. This type of engine has been utilized in Case manufactured products since 1985; however through the years, this engine has undergone continual improvements and refinements that have contributed to changing about 85% of the parts that were in the original engine. Another feature of the Case CX330 is the 259 net HP, which also has an air-to-air intercooler as well as a free breathing 24 valve cylinder head.

The new engines fuel system, in the Case CX330, is equipped with electronic logic that controls and tracks the operating parameters, and this will keep the system continually readied to respond with precision to the fuel requirement of each of the engines cylinders. This electronic engine design has eliminated cables and step motor controls from the fueling system, and this will add to the reliability of the engine.

There have been minor changes to the Case CX330s digging linkage geometry that assist in a higher digging force, but more important changes have been accomplished in the refinement of the trench and its open center hydraulic system. These enhancements are reflected in the main pressure of the implement circuit, which is up around 8%, and the hydraulic cylinder diameter is up 7%.

The Hydraulic Power in the CX330

The new model has an increase in hydraulic power that combines with the new and improved linkage geometry and will yield around 20% more force in the bucket digging, and 15% more arm force, which contributes to more efficiency. This new model also has 19 more HP, allowing the CX330 to drive the main hydraulic pumps with a more powerful force. Also, the new pumps that have been added will produce 6% more flow that will increase the hydraulic speed, but with a much lower system pressure.

The newly constructed Pro Control System, or PCS, manages the hydraulic system and interfaces with the 6TAA-830 engine, and is carried out with more electronic efficiency and genius than the older model 9050B did. Thought similar to the 9050B, the new Case CX330 does contain manually selected working modes besides the electronic and automatic controlled features. The automatic mode in the Case CX330 analyzes load demands and operator input via the joystick, and will then adjust the engine and hydraulic pumps in order to balance the power and speed, allowing for more efficiency and is also better economically in the long run.

The Pro Control System has other features that include high-speed assistance system that will speed up the boom and the arm functions. It also has an automatic power boost system too. The new and enhanced power boost system increases the main pressure by almost 10% for eight seconds, but only if the implement system reaches a standard relief pressure for a little longer than one second during harsh digging conditions.

With all the improved and enhanced features that have been incorporated into the new Case CX330, it truly makes it the leading excavator on the market. Case works hard to outdo themselves, and this time they have succeeded by bringing to the market an efficient and exciting piece of excavating machinery. So, if you are in the market for an upgrade from the 9050B model, then you will want to definitely consider the Case CX330.

A bulldozer is a large and powerfully tracked engineering vehicle that has incredible ground hold, making it mobile on rough types of terrain. A bulldozer has wide tracks that assist it to distribute its weight as it travels over large areas; the wide tracks also help prevent the bulldozer from sinking into the softer terrains like sandy or muddy grounds.

Bulldozers are known for their strong ground hold and having a torque divider, which is designed with the ability to convert the engines power into a dragging ability. This allows the bulldozer to use its own weight in order to push objects and remove objects from the ground. An example of this ability can be seen with the Caterpillar D9, when it easily tows a tank that weighs more than 70 tons. It is these attributes that make the bulldozer a key construction and excavation vehicle, as it is extremely instrumental in clearing heavy obstacles, debris, shrubbery and remnants from building structures.

The Blade of a Bulldozer

The bulldozer blade is constructed from a heavy and durable piece of metal plate, which is then installed and attached on to the front of the bulldozer. It has to be heavy and durable because the blade is used to push heavy objects around. The bulldozer blade is available in three different varieties: a straight blade, a universal blade and a combination blade.

The bulldozer straight blade is designed short with no lateral curve. This variety has no side wings, making it only useful for fine grading.

Universal bulldozer blades, which are also known as the U-blade, are designed to be tall and very curved. The universal blade has large side wings that help it to carry more material.

The third type is a combination blade, or S-U blade, and this blade is designed to be shorter, but has less curvature. The side wings of the combination blade are small.

Typical Modifications

The newer models of bulldozers have come along way from their distant past relatives, and have evolved with modern improvements that make them more efficient. One only has to look at the loader tractor for an example of modifications, which were accomplished by removing the blade and replacing it with a large volume bucket. This bucket is attached to hydraulic arms that will assist in raising and lowering the bucket, making it very useful for scooping up mounds of dirt and debris, and then loading it into trucks for removal or transport.

Another obvious modification has to do with the size of the bulldozer. The original bulldozer was larger than the ones today, and this compact version makes it easier to operate and maneuver in small work areas that might be restrictive to the larger models. This comes in handy when mining caves and tunnels. There are even very small bulldozers that are called calfdozers.

The History of the Bulldozer

With one look at a bulldozer, it is obvious that the origins were adapted from farm tractors that were used to plough farm fields. When it was necessary to dig ditches or canals, raise earth damns or move earth, the earlier tractors were fitted with thick metal plates in the front of the tractor. Eventually, the thick metal plate became known as the blade.

It is the progressive modifications of the bulldozer blade, which peels at layers of soil, that led to the useful advancements of this tractor. More to the point, the blade is the essential part of the bulldozer, making it extremely useful in excavation type projects. As time passed, engineers were able to use technology and toy with the modifications of the bulldozer. This need for modification developed out of the need for construction equipment to complete larger scaled jobs. It was companies such as CAT, Komatsu, John Deere, Case and JCB that pushed forward with efforts to manufacture large tracked earth-moving vehicles. These larger models were very loud and very powerful, which helped it earn the name “bulldozer”.

Still, time kept progressing and the need for more powerful and sophisticated bulldozers became essential, and so the bulldozer got larger. The new modifications included improved and better engines, reliable drive trains, improved tracks, and precision hydraulic arms that allowed for improved manipulation of the blades as well as automated controls. Another additive for the bulldozer is it can come equipped with the option of a rear-ripping claw, which breaks up rock, concrete and pavement.

The most common and well-known manufacturer in the bulldozer industry is CAT, which is a reputable name when considering tough, durable and reliable machinery. Though the bulldozer was born out of the classic farm tractor, it has become a useful piece of machinery for companies that deal with excavating and construction.

It has been said that the backhoe loader was possibly invented in the year 1957 in Burlington in the state of Iowa. However, it should also be noted that a man named Joseph Cyril Bamford, the founder of JCB, might have developed a similar construction vehicle in 1953 in the United Kingdom. The backhoe loader is considered a spin-off or variation of the farm tractor. Its name, the backhoe loader, does well in describing what this vehicle is — a loader bucket on the front, and a backhoe attached to the back of the vehicle.

When the loader and the backhoe are permanently affixed to the vehicle, it is not referred to as a tractor, it will not be used for towing, and most often will not have a PTO. The permanently attached models normally will have a seat that will swivel, so that the vehicle operator can swivel the seat to face to the rear in order to operate the backhoe controls. Backhoe loaders that have removable backhoe attachments have a separate seat found on the attachment itself.

The backhoe loader is a versatile vehicle, and, because of this, it can be utilized in a variety of different tasks like construction, transporting material, minor demolition, powering certain building equipment, digging and excavating, breaking up asphalt and paving roads.

Backhoe loaders that have detachable buckets can allow the operator to replace the bucket with other types of tools such as breakers, which are used to break up and smash concrete and rock. Some backhoe loader models are equipped with a loader bucket that has a retractable bottom. This allows it to empty a load more quickly, lending to a more efficient job that can be carried out in less time.

Models that have the retractable bottom loader buckets can be used in jobs that require grading and scratching off sand. Again, the front assembly on a backhoe loader can be either permanently mounted or removable. If the bucket is removable, it can often be replaced with other tools and devices used in construction. Before mounting different attachments, the operator must make sure the loader is equipped with a tool coupler, which is made up of two hydraulic cylinders that are found at the end of the arm assembly. The hydraulic cylinders will allow for expanding and retracting, and this enables the different tools to be attached.

When shopping for backhoe loaders, there are several brands, including New Holland, John Deer and Case, which are all reputable brands. There are also a variety of different backhoe loader models with some that have cabs, and others that do not. The newest models of backhoe loaders have numerous luxury accessories like air conditioning and radios, which help go a long way to making the work experience more positive.

The backhoe loader is commonly associated with jobs dealing with excavation; however, the backhoe loader can carry out many different tasks. It is often used on construction sites to haul equipment and supplies within the loader bucket. The backhoe loader can also be used to fill in trench lines or covering up newly put in pipes by shoveling in dirt. Also, the backhoe rear attachment is perfect for digging areas for placement of water pipes and sewer pipes.

The functionality and usefulness of the backhoe loader makes it very appealing for the engineering, construction and excavation industry. It is very easy to operate and can perform a variety of projects. The operator does not need to be a rocket scientist, but the operator should have some training and instruction on proper usage.