A telescopic handler or telehandler is a machine that is popular in the construction and agriculture businesses. These machines are similar in function and appearance to a lift truck or a forklift but are actually more similar to a crane rather than a forklift. The telehandler provides improved versatility of a single telescopic boom that could extend forwards and upwards from the vehicle. The operator could attach various kinds of attachments on the boom's end. Several of the most common attachments include: a muck grab, a bucket, pallet forks or a lift table.
To be able to move cargo through locations that are usually unreachable for a standard forklift. The telehandler utilizes pallet forks as their most common attachment. For instance, telehandlers could transport loads to and from areas that are not typically reachable by standard forklift units. These devices could also remove palletized cargo from within a trailer and position these loads in high locations, such as on rooftops for instance. Before, this abovementioned situation would require a crane. Cranes could be expensive to use and not always a time-efficient or practical alternative.
Telehandler's are unique in that their advantage is also their largest limitation: since the boom raises or extends when the equipment is bearing a load, it also acts as a lever and causes the vehicle to become quite unbalanced, despite the rear counterweights. This translates to the lifting capacity decreasing quickly as the working radius increases. The working radius is the distance between the front of the wheels and the center of the load.
When it is fully extended with a low boom angle for example, the telehandler would just have a 400 pound weight capacity, whereas a retracted boom could support weights as much as 5000 lb. The same unit with a 5000 pound lift capacity which has the boom retracted may be able to easily support as much as 10,000 pounds with the boom raised up to 70.
The Matbro Company in Horley, Surrey, England originally pioneered telehandlers. These equipment were developed from their articulated cross country forestry forklifts. At first, they had a centrally mounted boom design on the front section. This positioned the driver's cab on the back part of the machinery, as in the Teleram 40 unit. The rigid chassis design with a rear mounted boom and the cab located on the side has since become more popular.