By: Michelle Tunquist

There are a wide variety of cranes, each made to handle different jobs.  Though all cranes operate using levers and pulleys to lift and move heavy material, not every crane is suitable for every job.  Depending on the project, the crane you use should match the demand of the job.  There is no need to rent a large crane capable of hauling 400 tons if you only need one to haul 90 tons.  When you discuss your project with WM Services, we will help you choose the right crane—one that does the job you need completed.

History of Cranes

Cranes have been around for over 2,000 years.  First invented by the Ancient Greeks, evidence shows that cranes were used in construction of large buildings.  Later the Romans adopted the technology and advanced it for the purpose of constructing even larger buildings.  Today cranes have evolved into more complex versions that still operate using pulleys; however, now they can operate without the use of animals to power them.  That isn’t the only advancement—today, many versions of cranes exist to make them more flexible for the job at hand.

Types of Cranes

  • Mobile Crane—Mobile cranes can be moved about. In its most basic form, it consists of a truss or telescopic boom that is attached to some sort of mobile platform.  The platform can be made to operate by road, rail or water.  There are all sorts of mobile cranes, some include:
  • Crawler Crane—Crawler cranes are mounted on tracks (called crawlers).  Benefits of crawler cranes are that they are easily moved around on the job site and are very stable.  The crawlers make it so that they can transverse soft ground.  They can carry a large load (between 40 and 3,500 tons) and can move while holding the load.  However they are difficult to transport between sites as they need to be disassembled and transported by truck, train or ship.
  • Pick and Carry Crane—These are smaller cranes designed to be able to travel on regular roads.  They can pick up a load at one site and travel short distances to another site where they can leave the load, and they are quick to set up.  A disadvantage is that they do not have stabilizers and can only carry smaller loads up to 20 tons.
  • Telescopic Crane—This type of crane has a boom that can be extended to increase its reach.
  • Truck Mounted Crane—These are cranes mounted onto trucks.  They can travel on regular roads which makes them easier to move to different sites.  Outriggers extend from the truck to stabilize it when being used.
  • Rough Terrain Crane—Rough terrain cranes are mounted on rubber tires that can be used off road.  They have four wheel drive and are ideal for moving around job sites with rough terrain, and they use outriggers for stabilization when in use.
  • All Terrain Crane—These cranes can be used off road, but are also built with enough speed capability to drive on regular roads too.
  • Loader Crane—A loader crane has an arm attached to a truck or trailer.  The arm can then be used to load and unload items to and from the truck or trailer.  When not in use, the arm can be folded into a small space.
  • Tower Crane—Tower cranes are fixed to provide more stability and allow them to lift heavier loads.  This crane is fixed to the ground in a concrete slab and is often used to erect tall buildings.
  • Jib Crane—This type of crane has a boom with a movable hoist that is fixed to a wall or floor mounted pillar.  Usually used on an industrial site, they can move in a lateral arch, giving them flexibility of movement.
  • Overhead Crane—Overhead cranes are fixed to a horizontal beam above and can move along the track and lift heavy loads, typically in a factory.

WM Services Fleet of Cranes

At WM Services, we have a well maintained fleet of mobile cranes that can get the job done.  Whether you need something to lift a small or large load, we have the crane for you.  Choose from among our highly capable cranes for the one that matches the project you need to complete.  Need help choosing? Give us a call and we can help you decide which crane is right for you.   Our fleet includes a variety of rough terrain, all terrain and crawler cranes.

  • Grove RT890E—This is a rough terrain crane with a lifting capacity of 90 tons. It is equipped with a five section boom capable of extending from 38 ft to 142 ft.  The hydraulically powered counterweight is easily installed and removed.
  • Grove GMK 5165—This is an all terrain crane with a lifting capacity of 165 tons.  It is equipped with a six section boom capable of extending from 42 ft to 197 ft. This also has a hydraulically powered counterweight that can be installed and removed.
  • Grove GMK 5275—This is an all terrain crane with a lifting capacity of 275 tons.  It is equipped with a seven section boom capable of extending from  44 ft to 223 ft. The hydraulically powered counterweight can be installed and removed.
  • Manitowoc 999—This is a crawler crane with a lifting capacity of 275 tons. It is equipped with 290 ft heavy-lift boom, a 330 ft fixed jib on the heavy-lift boom, and a 420 ft luffing jib on the heavy-lift boom.
  • Manitowoc 16000—This is a crawler crane with a lifting capacity of 440 tons. It is equipped with a 315 ft No. 58 HL boom, a 346.5 ft No. 133A fixed jib on the No. 58 HL boom combination, and a 453 ft No. 59 luffing jib on the No. 58 HL boom combination.

Transporting the Right Crane

Worried about how you will get the right crane to the construction location?  Talk to our experienced staff and we can plan the transportation route.  We have experience planning and coordinating the most complex projects.  Call today to learn more about our crane rentals.