Excavators are heavy construction equipment consisting of a boom, dipper (or stick), bucket and cab on a rotating platform known as the “house”. The house sits atop an undercarriage with tracks or wheels. They are a natural progression from the steam shovels and often mistakenly called power shovels.

What is a machine boom?

A type of aerial lift, boom lifts allow for both horizontal and vertical reach. They are a helpful piece of equipment for outdoor jobs, industrial tasks and construction projects. Boom lifts allow for a higher reach than scissor lifts but typically have a smaller work platform.

How long is a boom of an excavator?

Boom length varies based on manufacturer and machine model. For example, the long-reach version of the Volvo EC380 excavator is 27′ 11″ (8.5 m) compared to the 21′ 2″ (6.45 m) standard boom and 16′ 5″ (5 m) arm that provide a max reach of 48′ 5″ (14.75 m). This brings up a good reminder on machine nomenclature.

What is boom swing?

The primary purpose of boom swing is for offset digging around obstacles or along foundations, walls or forms. A secondary use is cycling in areas too narrow for cab rotation. Independent boom swing is one of the major advantages of a compact excavator over other excavation equipment.

Why are excavator cabs on the left?

On an excavator the cab mounting platform at the front left-hand corner of the machine has to be able to support the entire weight of the machine, as well as provide structural integrity to the ROPS to protect the operator.

What is jib on boom lift?

What is a jib on a boom lift? “Jib” is a term used to describe the arm on an articulating boom lift. … Depending on the model, jib booms enable the platform to move up or down or from side to side, which is beneficial when working in confined areas.

What is a mass excavator?

Mass Excavators: Massively built, they allow the use of the largest buckets in the industry by weight class. These attachments are stoutly built for power, not reach.

What is a straight boom?

A telescopic boom lift, also called a stick boom or straight boom, has a boom that “telescopes” straight out from the boom hoist, which is attached to the lift chassis. Some models can reach as high as 185 feet, although the more common maximum range is in the neighborhood of 150 feet.

How does a boom lift work?

A boom lift is essentially a type of aerial work platform used by personnel to reach high places. A basic boom lift consists of a platform, or bucket, with a long, jointed crane run by a hydraulic lift system and attached to a grounded base. … A boom lift can be used in several different professions in every day life.

What are excavator booms made of?

The booms and arms of backhoes and excavators, since they need considerable tensile strength, are often made of low-alloy steels that have been heat-treated to get the needed tensile strength—50,000-100,000 psi—and toughness levels.

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How do you measure an excavator boom?

Determine the full, working length of the boom by measuring (as a straight line) from the center of the pin hole that will connect to the excavator to the center of the pin hole that will connect to the stick. Measure the inside width of the pin ears on the far side of the boom where the stick will connect to the boom.

What does a compact excavator do?

Mini excavator applications Generally speaking, these machines are used for digging, trenching, backfilling, leveling, grading and even drilling. When it comes to digging, a 3,000-3,999 pound mini excavator can dig a 7.8-foot-deep hole, while 7,000-9,999 pound excavators can dig as deep as 10.2 feet.

How do I know what size excavator I need?

Excavator sizes are primarily determined by the overall size of the machine, but it’s also essential that the objects you lift fit in the excavator bucket.

What do the numbers on Cat excavators mean?

The tonnage of the excavator is 20 tons. In PC200-8, 200 means 20 tons. In DH215LC-7, 215 means 21.5 tons, and so on. 320D behind the letter D indicates which series of products, Caterpillar’s latest series should be E series products.

How big of an excavator do I need to dig a pool?

Access: You are going to need at a bare minimum, 12 ft wide open space, to get an excavator into the back yard. More than 12 would be extremely helpful, but less than that could be tight. You’ll need an equal amount of clear vertical space too, without hanging tree branches or wires in the way.

What do you call excavator tracks?

Grousers are protruding rib-like structures (similar to tire treads) on the tracks of an excavator. Their purpose is to help increase traction. On an excavator, the house includes the cab, counterweights, fuel tank, hydraulic tank, and the engine.

What is the digging part of an excavator called?

One is the drive system or undercarriage. The second area is called the house. It contains the engine, hydraulic pumps, counterbalance and control grouping. The third part is the excavating arm or the business end of the machine. … No part of a hydraulic excavator is more important than the other.

How does an excavator pivot?

On an excavator, rotary unions allow hydraulic fluid to be transferred between the cab and track base while continuously rotating 360 degrees. The fluid supplies the track drive system allowing the excavator to move.

What does LME stand for on Cat excavator?

what does LME stand for on a Cat hoe? Low Maintainece Edition. long carriage Mass Excavator.

How much does a 385 CAT excavator weight?

Cooling System Fluid Capacity26.7 gal (101 l)Hydraulic Pump Flow Capacity258.9 gal/min (980 l/min)Hydraulic System Fluid Capacity262.9 gal (995 l)Hydraulic System Relief Valve Pressure4641.3 psiOperating Weight185475 lbs (84,131 kg)

What's the difference between jib and boom?

“The jib is the fixed steel arm on a crane from which the lifting ropes hang i.e the top T section on a tower crane or on the front of a crawler crane. The jib is fixed in length . A boom is the extendable arm on a mobile crane operated by hydraulics. Mobile cranes sometimes have a jib fixed on the end of the boom”.

How tall are boom lifts?

It’s common to find models that extend up to 60 feet, but most models have working heights of 30 to 40 feet. Electric lifts can have a variety of boom types. Mast booms, which extend vertically, are a common option for work platforms. These aerial booms lift a workspace straight up and down.

What is crane boom?

A crane boom is a long fixed or hydraulic arm that is used to move large objects in construction. It bears most of the weight when positioning a load, and its length determines a crane’s maximum reach. Crane booms take on a variety of roles and appearances depending on the type of crane.

Where are boom lifts used?

Boom lifts are used by different trained and licensed professionals to perform a variety of activities, including firefighting, construction, window cleaning, electrical and cable repair, mining, foresting, and painting.

What are boom lifts called?

Boom lifts are another type of aerial work platforms and are known by many other names including cherry picker, man lift and basket crane. Boom lifts are very similar to scissor lifts; however, they can typically reach higher heights and are equipped to maneuver around obstacles.

Can a boom lift be used as a crane?

Can You Use a Boom Lift as a Crane? Boom lifts and cranes are made for different jobs, and therefore, not designed to perform the same tasks. A boom lift does not have the same lifting and moving power as a crane, and a crane is unable to accommodate workers.

What is an articulate boom?

Articulating booms are aerial work platforms with multiple boom sections that hinge — or “articulate” — allowing the operator to gain access to work areas over obstacles and barriers.

How wide is a boom lift?

SpecificatijonValueMax Horizontal ReachS-60 HF: 46 ft 7 in / S-65 HF: 51 ft 2 inBelow Ground ReachS-60 HF: 4 ft 5 in / S-65 HF: 7 ft 5 inPlatform Capacity600 lbMachine Width and LengthS-60 HF: 8ft 5 in, 28 ft 7 in / S-65 HF: 8 ft 5 in, 32 ft

What is better JLG or Genie?

Consumer reports suggest that Genie is more reliable than JLG and Skyjack. Regarding support, they release the more regular safety bulletins to customers as necessary.

What steel is used for excavator buckets made?

Due to its high resistance to wear and unique hardness, the Swedish Hardox steel is used in machines working under difficult operating conditions. The elements can have smaller thickness and lower weight at the same time.

What is low alloy carbon steel?

Carbon steels are alloys of iron, carbon, manganese, and silicon. … Low alloy steels are similar to carbon steels but have additional alloying elements like chromium, molybdenum, etc., to improve their heat treat response.