Trailer cranes

The K350 E is a trailer crane in the 3.5 tonne class with state-of-the-art equipment, high driving comfort and outstanding performance values. Its maximum load capacity is 1,500 kg, the lateral reach with a load of 250 kg is an impressive 22 metres. An absolute Klaas highlight is the hydraulically telescoping folding jib. During platform operation or complex assembly work, the folding jib can be conveniently telescoped in and out by remote control, even under load. This makes complete crane assembly child’s play, even in confined spaces. The battery-powered electric motor, which drives the crane almost silently, is a pioneering feature. The large lithium battery can also be charged at any conventional 230-volt socket during crane operation, although this is rarely necessary as the K350 E can easily be used for an entire working day without recharging. Due to its high performance, the high-quality lithium battery requires only a few charging cycles and is therefore particularly user-friendly and stable in value.


Boom system

  • extremely strong and weather-resistant aluminium special alloy with low net weight
  • no strength loss in the welding seam due to stir welding process, joints are as strong as the solid material
  • typical Klaas hole pattern ensures smaller wind-exposed areas, low net weight and high dent resistance

Energy supply

  • protected routing of all moving electrical and hydraulic leads in or on the mast
  • no hose or cable reels on the mast
  • low-maintenance hydraulic pipework made of galvanised steel used in the substructure, meaning there is no need to change hydraulic hoses

Battery-powered electric motor (K350 E)

  • powerful lithium battery with 22 kWh enables self-sufficient crane operation over a complete working day
  • charging of the energy storage via 230-volt socket
  • permanent charging also possible during crane operation

Self-drive mechanism

  • hydraulic self-drive mechanism operated by standard remote control
  • easy manoeuvring in tight spaces

Hydraulic, telescopic fly jib

  • fly jib equipped with patented Klaas telescope technology
  • hydraulic telescoping of the first folding tip element via radio remote control
  • use of the folding tip even in tight assembly situations by "extending in the air
  • hydraulic telescoping also possible in stage operation

Automatic levelling

  • the crane is completely set up quickly and easily using the radio remote control
  • each individual support infinitely extends laterally
  • automatic levelling of the support cylinders for optimal set-up even on uneven surfaces
  • constant pressure monitoring reacts to changing outside conditions


  • fully hydraulic support in conjunction with the ASC support monitoring system enables infinitely variable outrigger widths, also in the direction of the range of action
  • no fixed increments that restrict the operator
  • l-shaped support ensure best possible safety against overturning
  • support without underpinning possible thanks to long, vertical cylinder

Telescopic winch

  • quick telescoping under load thanks to patented Klaas rope technology
  • integrated electronic length measurement records current extension length of the mast and calculates maximum possible payload
  • low net weight of the ropes increases range of action and payload
  • low-maintenance and very easy to reach rope technology

Twin luffing cylinders

  • folding jib joint is milled "from the solid" and thus enables higher load bearing capacity
  • electronic monitoring in the joint guarantees optimal lifting of loads in any angular position
  • twin luffing cylinders for even more security and protection against lateral forces
Video: Twin luffing cylinders  

Double derricking cylinders

  • boom raised with low torsion thanks to two luffing cylinders
  • double safety due to two cylinders
  • better absorption of lateral guide forces, making the boom more stable and still
Video: Double derricking cylinders

Endlessly rotatable

  • high-quality turntable from German brand manufacture
  • well thought-out rotary guide enables endless rotation of the upper carriage in both directions
Video: Endlessly rotatable

Crane control system

  • complex control system according to EN 280 and EN 13000
  • ultra-modern safety PLC for the crane operation
  • CAN BUS control block for particularly sensitive and accurate work
  • soft start/stop for low-vibration work
  • extension with additional remote control possible

Radio remote control

  • precise starting thanks to sensitive joysticks
  • large display provides a clear indication of all the crane’s key operating statuses
  • power supplied by standard batteries or cable
  • equipment with memory function possible
  • this learns two target points (e.g. where material is on the ground and unloading point on the roof), during which the crane moves in safe hold-to-run mode

Personal safety mode

  • personal safety mode in accordance with BG guidelines
  • for working at great heights without stationary securing options such as scaffolding or safety eyes
  • securing of persons by crane boom allows free working at exposed places

Retractable drawbar

  • reducing the total length from 9.25 m to 7.00 m enables set-up even where there is not much room

Full panelling

  • roomy, lockable storage compartments
  • secure storage of tools and accessories
  • large storage surface on the crane
  • high-quality, neat overall appearance thanks to aluminium full checker plate panelling

Optional equipment

Mounting-/glass hook

  • assembly hook enables precise material transport
  • application area: e. g. glass mounting with vacuum lifter
  • flexibility in length and tilt angle facilitates difficult installations

Accessory fix system

  • accessories are securely stored and immediately within reach
  • no cumbersome lashing necessary
  • custom-fit holders ensure safety on the road
  • crane equipped with fitting brackets

Working platform

  • The crane can be converted to a fully-fledged working platform in less than 5 minutes.
  • with 230 V socket and standardised lashing points for securing persons
  • The working platform can be swivelled left and right by 45° to either side.

Technical specifications

Hook load (stand./opt.)1,500 /3,000 kg
Hook height31.0 m
Total weight≥ 3.5 t
Boom length32.80 m
max. working height HA29.00 m
Outrigger width (min.)3.60 m
Outrigger width (max.)5.04 m
Winch capacity1,600 kg
Boom (1,500 - 800 kg)4,29 - 8,50 m
Extension 2 (500 kg)10.70 m
Vehicle dimensions9.43 x 2.28 x 2.58 m
Towing capacity3.5 t

Working range

1.500 kg4.50 m23.00 m
1.000 kg8.5 m21.00 m
500 kg16.00 m14.00 m
350 kg17.00 m25.00 m
250 kg22.00 m20.00 m

Working range diagrams

Subject to technical changes. All dimensions are approximate. The right is reserved to alter the functions and performance. The information reflects the appliance performance at the time of publication.
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