2018 Liebherr Ram Luffing Knuckle Boom Cranes RL-K 7500

The ram luffing knuckle boom crane series (RL-K) from Liebherr was developed especially for the oil and gas industry. The unique design of the knuckle boom reduces the working radius and increases the flexibility of the crane.

With the addition of a deep-sea winch and the active swell compensation system (Heavetronic), the RL-K can be used as a deep sea crane. Both are developments from Liebherr and fully integrated in the Litronic control system.

Features may include:

• The special feature of the knuckle boom's design is the mechanical knuckle transmission. It facilitates a minimum working radius of under 10 metres and on the RL-K 4200 permits almost complete extension of the boom to practically 180.

Liebherr has special equipment such as different pipe grabbers and load manipulators for handling pipes and lines in relation to oil and gas extraction systems.

The base unit of the pipe grabber system can be rotated and swivelled and can be enhanced with a pipe internal grabber or pipe external grabber.

With the pipe external grabber, it is possible to lift pipes with a diameter of up to 500 millimetres, up to six pipes simultaneously and an overall weight of 10 tonnes.

• Equipment with camera possible

• Certified explosion-protected version available

• Fast and uncomplicated exchange of equipment

• Complete integration in the Litronic control system

• The Liebherr-developed deep sea winch makes it possible to work at sea depths of up to 3,600 metres. It features a special cable reel mechanism that facilitates low-wear winding and unwinding of the cable, which in turn prolongs the service life of the cable.