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The crawler crane is a specific type of mobile crane that is offered with either a telescopic boom or a lattice boom which moves upon crawler tracks. Because this model is a self-propelled crane, it could move around a jobsite and accomplishing tasks without much set-up. Because of their enormous weight and size, crawler cranes are rather expensive and even hard to transport from one site to another. The crawler's tracks provide stability to the machinery and enable the crane to work without using outriggers, however, there are some models which do utilize outriggers. Moreover, the tracks provide the movement of the machine.
Early Mobile Cranes
The first mobile cranes were initially mounted to train cars. They moved along short rail lines which were specially constructed for the project. Once the 20th century arrived, the crawler tractor changed and this brought the introduction of crawler tracks to the construction business as well as the agricultural business. Not long after, the crawler tracks were adopted by excavators and this further featured the versatility of the machine. It was not long after before manufacturers of cranes decided that the crawler track market was a safe bet.
The First Crawler Crane
In the nineteen twenties, Northwest Engineering, a crane company within the United States, mounted its very first crane on crawler tracks. It described the new equipment as a "locomotive crane, independent of tracks and moveable under its own power." By the mid-1920s, crawler tracks had become the preferred means of traction for heavy crane uses.
The Speedcrane
The Moore Speedcrane, developed by Ray and Charles Moore of Chicago, Illinois was one of the first attempts to replicate the rails for cranes. Manufactured within Fort Wayne, Indiana, the Speedcrane was a steam-powered, wheel-mounted, fifteen ton crane. In 1925, a company called Manitowoc Shipbuilding Co, from Manitowoc, Wisconsin recognized the tracked crane's marketability and potential. They decided to team up with the Moore brothers so as to produce it and go into business.
Crown has made their RC 5500 Series to concentrate on the realistic challenges experienced within the workplace. This ground-breaking unit features intelligent technology and best-in-class ergonomics and comfort. Keeping the operator safe and comfortable normally results in more efficiency.
3-Wheel Stand-Up Counterbalanced Truck
The 3-Wheel Stand-Up Counterbalanced Truck comes in three thousand, 3500 and four thousand lb. capacity.
Performance Versatility
Crown's RC 5500 have been made to work efficiently in a busy work environment. Whether it is operating on the dock or in an aisle, this model achieves greatness. It has been designed to provide the operator unparalleled ride control, unmatched visibility and the ultimate ergonomics. The exclusive FlexRide technology offered by Crown offers a suspended floorboard so as to eliminate a lot of the vibration and shock which operators must work with on a daily basis. Interestingly enough, a lot of the competitor's sit-down truck models are unable to match the reduced impact levels provided by the RC 5500 Series.
Visibility - From a side-stance position in both directions of travel, this model provide maximum visibility for the operator. A low-profile offers a clear view mast as well a sculpted chassis allows the operators to be able to clearly see the fender, the fork tips and all around the truck. This optimum view enhances overall safety and lessens damage.
Speed - Top travel speeds are amongst the best within the business and achieved through Access 1 2 3 Technology combined with the newest AC traction control. Levels of performance can be custom tuned to be able to match the operator's skill level or the application needs.
Operator Safety & Comfort
Crown's FlexRide has a suspended floorboard that could greatly improve the overall work performance of the employee by improving their comfort and lessening their fatigue. The continuous vibration and shock could cause extreme operator exhaustion for those exposed to those motions everyday especially during travel over dock plates, expansion joints and rough grounds.
