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Kansas Excavator Parts - Excavators are instrumental for completing building projects on time and on budget. They are far more efficient compared to manual labor and can move heavy loads of dirt in mere minutes. These machines are used in landscaping, agricultural applications, road work and bridge work along with the construction industry. Also called diggers, 360-degree excavators and mechanical shovels, tracked models are sometimes referred to as trackhoes. Excavators can be equipped with numerous attachments to facilitate a range of jobs including grading and landscaping, demolition with a cutter, breaker and hydraulic saw attachments, material handling, river dredging, forestry, construction, open-pit mining, regular mining, driving piles when working with a pile driver, digging holes, foundations and trenches, snow removal with snowplow and snowblower attachments, drilling for rock blasting and footings with hydraulic auger attachment or drill, mulching for forestry and more. An excavator is a type of heavy construction equipment that is comprised of specific parts. The stick or the dipper, cab, boom and bucket are located on top of the house which is a rotating platform. The house is located on top of an undercarriage that features either wheels or tracks. Excavators have evolved from steam shovels of yesteryear. The hydraulic excavating models rely on hydraulic fluid to finish all movement and functions. The hydraulic cylinders feature linear actuation making them different from excavators that are cable-operated, relying on steel ropes and winches instead. Excavator Models There are numerous sizes and models when it comes to hydraulic excavators. Tiny and compact models weigh approximately 2k lbs. while the largest models weigh in around 2m lbs. Three hydraulic pumps are utilized by modern hydraulic models instead of relying on mechanical drivetrain configurations. Two pumps deliver high-pressure oil for the accessories, swing motor, track motors and arms. A low-pressure third pump delivers power to pilot the spool valves. This design offers less required physical effort for operating the controls. The three pumps that are in an excavator are often the two variable displacement piston pumps and the gear pump. These three pumps can be found in the excavator in numerous configurations depending on different manufacturer models. The House and the Undercarriage The house and the undercarriage make up the two main portions of the machine. The undercarriage is comprised of the tracks, track frame, the gears and the hydraulic motor that operates the blade tracks. The house consists of the operator cab, the counterweight, hydraulic oil tanks, fuel and the engine. The house and the undercarriage are connected via a pin. A hydraulic swivel located at the pin axis supplies high-pressure oils to the hydraulic motors’ tracks. This setup enables the machine to traverse 360 degrees freely. The house is available in a variety of configurations and is attached to the main boom. The most common type of booms are the mono booms. This kind of boom offers zero movement other than up and down motions The knuckle boom enables the machine to move right and left in line. Typically an option on compact excavators, the booms’ base has a hinge option that enables it to pivot one-hundred and eighty degrees independently to the house. Triple articulated booms are also on the market. At the end of the boom, the stick or dipper arm is located. This arm creates the necessary digging force to drag the bucket through the ground. The length of the stick is optional depending on whether breakout power or reach is necessary. Longer stick models are utilized for reach applications, while shorter sticks are used for breakout power situations. At the end of the stick, the bucket is attached. A mud bucket describes a large, wide capacity bucket that has a straight cutting edge used for leveling and cleanup or wherever teeth are not needed. General-purpose bucket designs commonly are used to break up hard ground and difficult rocks, with their side cutters and hardened teeth that are typically smaller and stronger. There are many different buckets of varying sizes for different applications. Numerous attachments can be used for ripping, lifting, cutting, boring, crushing, and more. Before the 1990s, the excavating machines were outfitted with a conventional counterweight that was located at the back of the equipment. This was in place to add more lifting capacity and digging force. This design was not ideal for working in confined locations. Today’s machines have been designed with the counterweight to stay in the width of the tracks for a much more user-friendly design. In excavators, there are two main kinds of control configuration to operate the bucket and the boom called the ISO and the SAE. These types of control configuration disperse the four top digging controls between two different x-y joysticks, enabling an experienced operator to have simultaneous control of all four functions. Some models have switches that enable the operator to choose which configuration they prefer. Regular excavation and bucket jobs have been surpassed by hydraulic excavators. There are many hydraulic-powered excavator attachments including a breaker, a grapple and an auger. Some models come with a quick coupler feature to increase efficiency while simplifying the attachment mounting process. Excavators often work beside loaders and bulldozers. Most of the compact-sized excavator models have wheels and a backfill or dozer blade. The horizontal dozer blade attaches to the machines’ undercarriage. It is commonly employed for leveling and pushing items into a hole. 8 Main Excavator Types • Long Reach • Backhoe • Suction • Steam Shovel • Bucket Wheel • Skid Steer • Dragline • Crawler Steam Shovel Steam shovels are one of the original types of excavators. They relied on steam energy while today’s models use electric or diesel motors. Steam shovels are similar to backhoes with the bucket or shovel facing away from the machine instead of facing it. This design allows the operator to push dirt away from the unit instead of pulling the earth towards it. Steam shovels are used for digging around objects that may interfere with a typical backhoe. Backhoe One of the most well-known types of excavators is backhoes. This equipment consists of a wheeled track base and large bucket that extends from an arm or boom above the ground. The operator can scoop earth toward the machine as the design has the bucket facing the operator’s cab. There are many kinds of excavators and sizes including heavy-duty applications such as dredging water and bridge construction to compact residential models ideal for backyard landscaping. The smaller models enable operators to work in tiny spaces; however, this translates to approximately a 200-degree swiveling capacity for digging close to the machine. Dragline Excavator Dragline excavators are designed similarly to a backhoe and include numerous lines and cables to support the bucket pulling motion. The dragline design enables operators to obtain a longer reach while digging deeper compared to a traditional backhoe. The cable and booms let users work over wet or unstable ground and in difficult locations unattainable by regular models. Skid Steer Excavators Skid steers have buckets and booms that face away from the operator. This design allows attachments to reach over the cab as opposed to around it. This design makes skid steers useful for negotiating tight turns and narrow locations. They are commonly employed for residential projects like site cleaning, digging pools and removing debris within limited space. Suction Excavator Resembling a modern dump truck, these special excavators enable operators to use a large hose and vacuum technology to suck rocks and earth out of the ground. The material is moved back to the truck. This machine makes it safer to dig around underground pipes and equipment compared to regular backhoes. Crawler Excavators Crawlers run on two tracks and not wheels. They are popular in the mining and construction industries. Also called compact excavators, these machines rely on hydraulic power components to lift heavy soil and debris. The chain wheel configuration allows the machine to traverse down hills with less risk, making them an ideal candidate for hilly locations and tricky terrain. Crawlers are slower in comparison to other models but offer better stability, flexibility and balance. Long Reach Excavators The long reach model features longer arm and boom options. Long reach excavators are excellent for hard-to-reach locations. The extendable arm offers more than 100 feet of horizontal reach. These machines are often used for demolition in applications working over a body of water. Various attachments can be fixed to the arm to complete jobs such as cutting, crushing and shearing. Bucket Wheel Excavator These machines consist of a large front wheel that has built-in buckets and shovels. Dirt and rocks are scooped up within the buckets as the wheel rotates. Items are transferred onto a conveyor belt that functions as an important part of the machine. The belt transports the material into a bin that depending on the model, could be a part of the machine or separate.