Tag Archives: Used Excavators for Sale

Used Excavators 15

Posted on January 12, 2011 by Backhoe Excavator

Gears are now used for a wide range of industrial applications. There are gears weighing from 15grams to 15 tons. Lots of industries use gears for transmitting power or rotational force from one component to another. Gears have varied application starting from textile looms to aviation industries. Undoubtedly the demand for gears in industries is estimated at a whopping 125 billion dollars worldwide.

Cement plants use girth gears for crushing raw materials. These girth gears have high strength and highly durable that they can be used in any operating environment. For rotating equipments in the cement industry power transmission is essential and that is provided by various open gear drives. Other types of gears which are used in cement industries are reduction gears, pinions, Sprockets, pinion shafts and helical gears.

Coal plants also most commonly use girth gears in their mining equipments. Heavy gearboxes are also being used in heavy machineries. There are two basic gearing principles which are:
- Craggy reliable gearing
- Worm gearing

These are used in many mining machines such special cutting machines, axle for forming tunnels for locomotives, etc. Gears are also used in compressors, cages, trolleys and diesel locomotives that are used for coal mining.

Medical industry uses gears in a huge way. They are being used in the surgical tables, patient beds, gear pumps for medical dosing applications, and also in medical diagnostic machine.

Micro assembly uses micro gears which enable us to have miniature components built with a very compact size. Use of micro gears is really advantageous as they provide zero backlash, long operating life, withstand extreme environmental conditions, higher efficiency and excellent repeatability.

Gears are widely used in Railway industry in different applications. For bringing about railway safety and railway signaling, different varieties of specialized gear drives have been developed. Buchli-drive, Quill Motor Drive are some such drives developed.

Apart from there gears are have also shown their mark in the steel industries and construction machinery. Planetary gearboxes, reduction gearboxes and pinion gearboxes, worm gears, bevel gears and spur gears are commonly used in steel industries. Gears are used for loaders, lifters, excavators and all such machines that are used for construction.

By Thomas P

Article Source: ezinearticles.com Continue reading →

Posted in Used Excavators 15 | Tagged , , , , , , , , , , , , , , , , | Leave a comment

Tractor Excavator

Posted on October 20, 2010 by taksinoil

Every machine out there was designed with a specific job in mind, and although you may be able to use that machine for some of the other tasks, it would be extremely rare to find a different type of machine to do the job as well, much less better than, the original machine. The differences between the forklift and the tractor, even with loader, excavator and backhoe attachments are prime examples of this.

Forklifts are intended for use in a warehouse or company yard primarily, to unload trucks and store the products in a warehouse with narrow aisles. It has tines to pick the load up with, either a flat row of these on the bottom, or two that hook into the sides of the item to be picked up, and they have attachments to be able to turn sideways to set things down or pick them up, to grab kegs, etc. Not only do they have a weight limit on the machine as a whole, there is also a weight limit on the tines, and it all has to be counter balanced. Some of the more modern improvements have been to not only increase the height they can lift, but also to increase the depth they can reach.

A tractor, even a tractor with attachments, cannot take the place of a forklift. Both the backhoe and excavator buckets are a smaller width and are meant for digging. The loader is also a bucket shape and will hold only a portion of the types of items you can load on a forklift; however, it will carry different types of things than a forklift. And it will be able to excavate the dirt load it into a dump truck or the like, much better. Then there is the problem with the overall width of the machine, as the tractors are not made to work in narrow aisles.

The problem is that when you need it, only a forklift will do and when you need a tractor with attachments, only those will do. It can be a little expensive to buy both, but it is worth it depending on the types of moves or jobs you have lined up. In addition, the cost can be cut down by buying used machines. So the next time you pass the sign “Forklifts for sale”, stop in and ask if they sell tractors, too. Maybe you can buy them as a package deal. You might get it a lot cheaper if you buy them together. If you need either a tractor or a forklift;either new or used, you can find much better deals online than you can in person.

By Grant Webb

Article Source: ezinearticles.com Continue reading →

Posted in Tractor Excavator | Tagged , , , , , , , , , , , | Leave a comment

Tracked Excavators

Posted on October 20, 2010 by taksinoil

Excavators are engineering vehicles which are primarily used for the purpose of digging trenches, holes or foundations. They are also used for other purposes such as demolition, lifting and placing heavy materials especially pipes, for mining( not open pit mining), river dredging, landscaping. These can be used for brush cuttings aided with hydraulic attachments.

Because excavators are used for the purpose of digging, people usually use the term ‘excavators’ for all kind of digging equipments. Actual excavators have an articulated arm, a bucket and a cab mounted on a rotating platform known as a pivot. This platform is on top of an undercarriage with tracks or wheels. The design is basically derived from steam shovels.

The other terms used for excavators are ‘ diggers’ and ’360-degree excavators’. They are sometimes simply called 360. The tracked excavators are also called ‘track hoes’ due to its resemblance with a backhoe. There is a contradiction that the ‘back’ in a backhoe is used in reference to the pulling back action of the bucket towards the machine instead of the location of the shovel. However, excavators are still referred to as front hoes by some people.

Excavators come in a variety of sizes, but the most popular are large excavators and mini excavators. The large excavators are huge in size. They weigh around 85,000 kg and their bucket size is usually 4.5 m 3. These excavators are generally used for industrial excavation works.

Mini excavators are popularly known as compact excavators also, the smallest models generally weigh around 1,500 kg and they have a bucket size of 0.036 m 3. One thing that sets a mini excavator apart is the fact that all the movements and functions are supported by a hydraulic fluid.. These mini excavators have become very trendy in metropolitan areas because of the limited space available. It can easily get into small spaces where one cannot even dream of bringing in a large excavator.

Mini excavators are used for improving the service and reducing the maintenance costs. Mini excavators are generally used for loading the material into a truck , setting up pipes and for precision excavating and trenching.

These excavators can vary on the basis of their usage because there are different users for these excavators. The excavators can expand their uses when aided by different attachments. A flexible and successful excavator can be ensured by using standard mini excavator couplers. This would ensure a smooth functioning because all the attachments will work right the first time.

Being the most popular equipments in the construction industry, excavators have successfully aided in reducing the involvement of human effort in heavy construction work.

By Sandra Maria Stammberger

Article Source: ezinearticles.com Continue reading →

Posted in Tracked Excavators | Tagged , , , , , , , , , , , | Leave a comment