Trailer cranes

K23-33 RS City

The K23-33 RS City with a hook height of almost 33 m has been one of Klaas’ most popular trailer cranes for many years. With its lateral range of 23 m with a load of 250 kg, it features an enormous radius of action. The aluminium crane can be converted into a work platform in a few minutes without tools, thus enabling varied, safe work on the building site. Thanks to its self-drive mechanism it is able to manoeuvre into suitable gap with pinpoint accuracy and be shortened to 7 m due to its retractable drawbar. As a single axle model with a low net weight of 3.5 t, it is also easy to handle in tight spaces.

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K23-33 RS City at WorkBrochure trailer cranesProduct sheet K23-33 RS CityProduct video K23-33 RS City
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Equipment

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

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

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  

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

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

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

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

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

H-Outriggers

  • 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

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

Drive concept

  • powerful diesel engine for the crane operation
  • low fuel consumption meaning enormous cost saving and reduction of environmental impact
  • electronic tank monitoring on the crane and display via the remote control unit

Retractable drawbar

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

Self-drive mechanism

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

Optional equipment

Hybrid drive

  • optional drive by diesel engine or environmentally friendly electric motor
  • electric motor can be removed without tools for transport on the road

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

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 / – kg
Hook height32.8 m
Total weight≥ 3.5 t
Boom length34.10 m
Outrigger width (min.)2.85 m
Outrigger width (min. by HA)3.60 m
Outrigger width (max.)5.04 m
Winch capacity1,500 kg
Boom (1,500 kg)4.97 m
Extension 1 (800 kg)8.26 m
Extension 2 (500 kg)10.39 m
Extension 3 (250 kg)12.31 m
Vehicle dimensions9.24 x 2.27 x 2.59 m
Towing capacity3.50 t

Working range

LoadRangeHeight
1,500 kg4.50 m22.00 m
1,000 kg8.50 m20.50 m
800 kg9.50 m24.50 m
500 kg14.00 m21.50 m
350 kg17.00 m23.00 m
250 kg23.00 m19.00 m

Working range diagrams

Crane operation
Platform operation (HA 2/200)
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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