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.
The Melroe brothers, of Melroe Manufacturing Company in Gwinner, North Dakota, purchased the rights to the Keller loader in 1958 and hired the Kellers to continue refining their invention. As a result of this partnership, the M-200 Melroe self-propelled loader was introduced at the end of 1958. It featured two independent front-drive wheels and a rear caster wheel, a 12.9 hp (9.6 kW) engine and a 750-pound (340 kg) lift capacity. Two years later they replaced the caster wheel with a rear axle and introduced the M-400, the first four-wheel, true skid-steer loader. The M-440 was powered by a 15.5 hp (11.6 kW) engine and had an 1,100-pound (500 kg) rated operating capacity. Skid-steer development continued into the mid-1960s with the M600 loader.
The main types of lawnmowers are the walk-behind mowers (push reel, gas or electric); riding (the fun one), hover mowers, which are push mowers that use an impeller system to push air down, allowing it to hover over the grass; and the robotic mower, which is an autonomous, self-guided unit that is as efficient at cutting the grass as it is at impressing (or frightening) the neighbors.
25HP-55HP compact 4WD tractors powered with fuel-efficient engines, showcasing superior performance and maneuverability in addition to lower emissions, noise and vibration. Available in various chassis sizes, these tractors are tailored to landowners, small farmers (typically 30 acres or less) and commercial users. Each model includes more standard features and boasts superior performance at a lower price than the competition.
There are two main types of "Control" configuration generally use in excavators to control the boom and bucket, both of which spread the four main digging controls between two x-y joysticks. This allows a skilled operator to control all four functions simultaneously. The most popular configuration in the US is the SAE controls configuration while in other parts of the world, the ISO control configuration is more common. Some manufacturers such as Takeuchi have switches that allow the operator to select which control configuration to use.
Fifty-five farmers and assorted country folk clustered around the auctioneer. Bidding on the New Holland was fast and fierce. Then, the Kubota was up. “$15,000, can I get $15,000,” the auctioneer sang through a megaphone. “How about 10? Can I get 10? $10,000?” My buddy Kyle had told me never to bid first. They always start high, so wait for the drop and let someone else kick it off. “Nice Kubota, backhoe, good machine, how about 7, can I get 7?” A card went up. A guy in overalls near the front had bid. “We have 7, how about 7-5, 7-5.” Shaking like baby deer, I raised my card. “7-5, in the back. Can I get 8, 8, 8?” Overalls raised his card. “8-5, 8-5.”