I think it is because hydraulic systems are stronger than pneumatic systems.
if you know that is wrong then get an expert. : )
bulldozers...cranes...backhoes...
Backhoes are commonly used in alot of construction jobs. Most commonly used for breaking up concrete and digging holes. Backhoes come in different sizes depending on the construction job you currently have.
bulldozers...cranes...backhoes...
ClevelandBrothers.com advertises that they sell used backhoes including Caterpiller models. IronPlanet.com is an auction site specializing in used construction machinery like backhoes.
There are several places where you can purchase or rent a use backhoes. I would highly suggest places such as the following: Machinery Trader and Iron Planet.
There are several sites that you can go to find loader backhoes for sale. Some of them include: rbauction, gregorypoole, machinery trader and libertybackhoes.
Just look at this site below. It shows pictures of backhoes, cranes, wheel loaders, bulldozers, etc. These are considered 'heavy equipment'.
We use wheels for:Transportation: Cars, Trucks, motorcycles, bicycles, buses, trains, etc.Making heavy machinery mobile: Cranes, loaders, bulldozers, backhoes, etc.Making weapons mobile: Tanks, canons, multi-tube rocket launchers, etc.To help aircraft take to the sky and land again.Fun: Roller coasters, dodgems, etc.
From backyard log splitters to the huge machines you see on construction sites, hydraulic equipment is amazing in its strength ­and agility! On any construction site you see hydraulically operated machinery in the form of bulldozers,backhoes, shovels, loaders, fork lifts and cranes. Hydraulics operate the control surfaces on any large airplane. You see hydraulics at car service centers lifting the cars so that mechanics can work underneath them, and many elevators are hydraulically operated using the same technique. Even the brakes in your car use hydraulics!!!
The primary type of hydraulic oil used in case backhoes is 10wt or AW-46. Each type has specific properties for longevity, performance, and resistance to harsh temperatures.
Short rise elevators Ship's steering gear Log splitters Scrap crushers Cranes Power take offs on Farm Tractors Backhoes Automotive Brake systems Automotive Power Steering systems Arbor presses Hydraulic Machinery
Machinery Trader, or http://www.machinerytrader.com/ is very simillar, except only allowing heavy machinery, and it allows the user to select brand or type of equipment that they wish to look for.
The best and easiest place to go is to heavyequipmentschool.com. That website offers credentials, financial aid, and instruction on backhoes, tractors, and other heavy machinery.
In most cases, it stands for Joseph Cyril Bamford Excavators Limited. It is used for the machinery the company creates, which includes backhoes, tractors, and other engineering vehicles.