The two main sections of an excavator are the undercarriage and the house. The undercarriage includes the blade (if fitted), tracks, track frame, and final drives, which have a hydraulic motor and gearing providing the drive to the individual tracks. The house includes the operator cab, counterweight, engine, fuel and hydraulic oil tanks. The house attaches to the undercarriage by way of a center pin. High pressure oil is supplied to the tracks' hydraulic motors through a hydraulic swivel at the axis of the pin, allowing the machine to slew 360° unhindered.[8]
1978 John Deere 4440 2WD Tractor, 1,485 Hrs Showing, 10.00-16 Front Tires, 14.9-46 Rear Tires, Duals, 6 Cylinder Diesel Engine, 16 Speed Quad Range Transmission, 3 Hydraulic Remotes, 3 Pt W/3Rd Member, Duals Have Spacers, After Market Steps, AC/Heat/AM/FM, 540/1000 PTO, 10 Front Weights, NOTE: Financing Is Available On This Unit Through Agdirect, Must Apply Prior To Auction Closing Date, Only Items With Sale Price Of $25,000.00 And Above Qualify For Financing Through Agdirect, Contact Agdirect At 888-525-9805, SN: 4440H012254R ...more

The conventional bucket of many skid loaders can be replaced with a variety of specialized buckets or attachments, many powered by the loader's hydraulic system. These include backhoe, hydraulic breaker, pallet forks, angle broom, sweeper, auger, mower, snow blower, stump grinder, tree spade, trencher, dumping hopper, pavement miller, ripper, tillers, grapple, tilt, roller, snow blade, wheel saw, cement mixer, and wood chipper machine.


Sellers on eBay offer branded heavy machinery and construction equipment, including refurbished and older models at amazing discounts. Taking advantage of these great deals means it is possible for small businesses and homeowners to own a loader that might otherwise be too expensive. Search the extensive inventory now to find something that meets your requirements, and discover the countless ways a skid steer loader improves your operational efficiency, saving you labor, time, and money.   
 For sale is a 2005 Caterpillar 304CR Excavator, Cab/Heat/Air, Aux Hydraulics, Mechanical thumb,2 Speed,  Backfill Blade, VERY GOOD tracks, Cat Coupler, 10,844# Operating weight, 43 HP Diesel engine, 4,221 Hours.  Cranks right up and runs good, Tracks straight, turns strong both directions.  Has some dents/dings/scratches but seems to be mechanically pretty sound.  Cylinders all seem dry.
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On the end of the stick is usually a bucket. A wide, large capacity (mud) bucket with a straight cutting edge is used for cleanup and levelling or where the material to be dug is soft, and teeth are not required. A general purpose (GP) bucket is generally smaller, stronger, and has hardened side cutters and teeth used to break through hard ground and rocks. Buckets have numerous shapes and sizes for various applications. There are also many other attachments which are available to be attached to the excavator for boring, ripping, crushing, cutting, lifting, etc. Excavators in Scandinavia often feature a tiltrotator which allows attachments rotate 360 degrees and tilt +/- 45 degrees, in order to increase the flexibility and precision of the excavator.

The first three-wheeled, front-end loader was invented by brothers Cyril and Louis Keller in Rothsay, Minnesota, in 1957.[2] The Kellers built the loader to help a farmer, Eddie Velo, mechanize the process of cleaning turkey manure from his barn. The light and compact machine, with its rear caster wheel, was able to turn around within its own length, while performing the same tasks as a conventional front-end loader.[2]

The make and model category is further divided into the purpose in which a driver sits on the machine and drives it, and the other where the operator works alongside the vehicle. The type of drive is further broken down to wheel type and track type. The wheel type is then broken down into two, three, and four-wheel types of drives, while the track type is subdivided into full and half-track types of drives.
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