The telehandler or telescopic handler is a heavy duty machine that is popular within both the construction and agriculture industries. These machines are rather similar in both appearance and function to the forklift, except it more closely resembles a crane. The telehandler offers increased versatility of a single telescopic boom that could extend forwards and upwards from the vehicle. The operator could attach numerous attachments on the boom's end. Some of the most popular attachments consist of: a bucket, a muck grab, a lift table or pallet forks.
In order to transport loads through places which are usually not reachable for a conventional forklift. The telehandler uses pallet forks as their most popular attachment. Like for example, telehandlers could move cargo to and from locations that are not normally reachable by conventional forklift units. These devices could also remove palletized cargo from within a trailer and position these loads in high places, such as on rooftops for example. Before, this situation mentioned above would require a crane. Cranes could be pricey to use and not always a practical or time-efficient option.
Telehandler's are unique in that their advantage is also their biggest drawback: because the boom raises or extends when the machinery is bearing a load, it also acts as a lever and causes the vehicle to become quite unstable, even with the counterweights on the back. This translates to the lifting capacity decreasing fast as the working radius increases. The working radius is the distance between the center of the load and the front of the wheels.
When it is fully extended with a low boom angle for example, the telehandler will only have a 400 pound weight capacity, while a retracted boom could support weights as much as 5000 lb. The same unit with a 5000 pound lift capacity that has the boom retracted might be able to easily support as heavy as 10,000 lb. with the boom raised up to 70.
England first pioneered the telehandler in Horley, Surrey. The Matbro Company developed these equipment from their articulated cross country forestry forklifts. Initially, they had a centrally mounted boom design on the front section. This placed the cab of the driver on the rear portion of the machinery, as in the Teleram 40 model. The rigid chassis design with the cab situated on the side and a rear mounted boom has since become more popular.