A bulldozer is a caterpillar tracked tractor (Crawler) that has a very wide blade or metal plate attached to the front of the tractor. It is used to break ground or push dirt and other substances around with the wide blade. Once their versatility and ability to move earth (as against ploughing) they grew quickly in popularity. The design transformed from that farm tractor into what we see today, bulldozers with caterpillar traction and a variety of blades and tools for moving earth, shifting boulders and removing tree stumps.

The idea for bulldozers came from the Holt farm tractors. Holt farm tractors were used to plough fields and because of their versatility in pushing around ground they were chosen for use in World War One.
In 1923 a young farmer named James Cummings and a drafter J. Earl McLeod came up with the first plans for the first real bulldozer. One of the first bulldozers ever made is on display in Sinsheim, Germany and another in Morrowville, Kansas, USA. Morrowville, Kansas is where the first bulldozer was built.
Since the 1920’s there has been an increasing demand for larger more powerful bulldozers on construction sites and other job sites because of their ability to move around a large amount of material all at once and even break ground.

Major heavy equipment manufacturers threw their hats into the ring and started making bulldozers that weren’t just tractors with an attachment on the front but very large machines design just for bulldozing. These companies (John Deere, Case, Liebher, JCB, Terex, International Harvester, Komatsu, Fiat-Allis and Caterpillar) created bigger and more powerful bulldozers to tackle larger and larger piles of material.
Caterpillar has emerged from the pack as the premier builder of bulldozers and is now famous for them. Caterpillar makes their machines tough, durable and importantly, reliable.

And of course since the 1920’s when the bulldozer was invented there have been many improvements to the bulldozer such as more powerful engines, a curved blade, hydraulics, raised cabs, better tracks, arms for better manipulation of the blade, reliable drive trains and even automated controls.

The bulldozer has come a long way from its inception as a tractor with a flat blade on the front attached by pulleys. It is now a sophisticated machine that you will see on just about any job site moving dirt and gravel around according to the need of the workers.
From the humble farm tractor grew the mighty bulldozer and where would we be today without them. The millions of man hours they have saved by doing mechanically in one day what often took weeks for a team of labourers to achieve.

C & J Earthmoving Repairs has been in the earthmoving repairs business since the year of 2011 and have been developing ever since into a business that is reliable, affordable and that promises top quality service. In just two years we have already moved to a larger location to accommodate our immense growth.
C & J Earthmoving Repairs makes use of an instrument which measures power output. This instrument is known as a dynamometer and this allows us to determine the power produced by an engine, motor or other rotating prime mover and can be calculated by concurrently measuring torque and rotational speed (or otherwise known as RPM). A dynamometer can also be used to determine the torque and power essential to operate a driven machine such as a pump. We specialise in repairs and make use of this dynamometer so that we can dyno transmissions.

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