Humma RC20-25 20T Crane

The Humma 20-25 Crane is an articulated pick and carry crane that set the industry benchmark for 20T cranes.

The Humma 20-25 sets the standard for true 20T lift capable cranes.

The furthest reach and lift for any crane in its class combined with a low maintenance design and feature packed as standard makes the Humma the crane of choice.

Dual boom extension cylinders allow the four fully fabricated booms to extend to an impressive 20.5M of boom length with no manual extension. The operator can extend his booms fully without leaving the cabin.

With the addition of an optional 5M telescopic fly jib, the crane operator can reach as far as 25.5 M in the full 60 degrees of boom angle. Crane lifting is equally as impressive with 20 Tonnes at 1.6M of radius from sliding hook on boom 2. Booms at full extension of 20.5M, 17.2M radius allow 1050kg through the full 42 degrees of articulation.

As standard, a Cummins 285hp ADR 80/02 compliant engine is used in all Humma cranes.

Emission compliance is assisted by the addition of a combined exhaust stack and catalyst. This allows reduced emissions and has the huge benefit of engine noise reduction while not harming any engine performance. An integrated exhaust brake is also included as a standard item.

Allison fully automatic transmission (with torque converter lock up) combined with the ZF transfer case and Kessler axles provide an extremely high quality driveline that will stand up to the most rugged terrain.

The airbag suspension system provides the operator with a huge advantage when operating in soft ground conditions. The airbag suspension system allows for positive pressure on each wheel corner which greatly assists in wheel traction allowing access to soft or sandy areas. The added benefit of vibration reduction means much lower maintenance costs as no line boring of articulation or boom pivots is required. The ability for the suspension to absorb all the road bumps creates a highly stable crane even at high road speeds.

Crane hydraulics are supplied by a 303 L/min 3 segment pump that can be disconnected while the crane is running via the Muncie PTO. The steering circuit is supplied by a separate 108 L/min pump and a backup electric pump can be used for emergency situations.

The modular design allows for easy replacement of components and complete corrosion protection of all parts before assembly. The unique airbag suspension system coupled with the 4-point rubber mounted cabin provides an incredibly smooth drive with excellent vibration isolation and very low noise levels. Operator position sound levels in the cabin are 60.9 db(A) at low idle and 77db(A) at high idle as measured by an independent company.

These results are just part of the Humma’s impressive feature list that are important for any workplace OH&S.


RC20-25 20T Crane features.

  • Fully powered boom

    Four fabricated booms to extend to an impressive 20.5m of length with no manual extension required. A separate 5M telescopic fly jib can be fitted to extend the boom to over 25M of boom length.

  • Airbag suspension

    Airbag suspension provides the operator with unparalleled levels of comfort. More importantly it removes all shock loading and vibration through the crane chassis. This results in very low maintenance costs with no line boring of articulation or boom pivots required. This produces an extremely stable crane to drive at high speeds.

  • 4 Camera system

    A unique 4 camera colour system, featuring a rear and 2-side cameras, allows for full 360-degree vision. A 4th camera is mounted onto the boom to monitor the winch drum.

  • Climate controlled cabin

    Separate roof-mounted over sized air-conditioning and in dash heating systems. Designed for operation in the harshest Australian climates up to 45 degrees.

  • Seperate digital gauge displays

    Separate colour LMI and crane instrumentation displays provide the operator with full control of their crane for easy viewing.



Cummins ISC285
213 KW 1085 NM
Exhaust brake
ADR 80/02 Compliant


Allison 3000SP
Fully automatic 6 speed
TC417 Converter

Transfer Case

ZF VG 750
2/4WD & Hi/Lo air shifted
2:1 low ratio


Kessler D81PL477 high-speed planetary axles
Wedge brake operation
Rear axle diff lock
Front wheel holding brake

Tyres and Rims

12.00 x 20 x 20 cross ply tyres
20”x 8.5” 10 stud 335 PCD wheels


Airbag suspension with shock absorbers
Front suspension lock pins for crane stability


3 segment crane control pump with electric disconnect feature. 330 L/min
Single segment crane steering pump. 101 L/min
Electric emergency steering pump
Individual Danfoss crane function control valves
250bar working pressure

Tank size

Diesel – 320L
Hydraulic oil – 320L


Rubber mounted for vibration and noise isolation
Standard features include:
Driver and passenger air seat
4 colour camera CCTV
Separate heating and air conditioning units
Murphy PV750 digital display with error logging
Robway or 3B6 Load Moment Indicator systems


100mm diameter articulation and boom pivot pins with spherical bearings


4 part booms fully fabricated
Fully powered out to 20.5m
Dual hydraulic cylinders
4T single line pull winch
Reeved 4 parts for 16T


10.42m long
2.5m wide
3.1m high
5.0m wheel base
5.0m inside wheel turning circle

Axle Loadings

Front axle 9,600kg
Reat axle 10,800kg

Enquire now

To view the full data sheet including load chart specifications please submit an enquiry or call +61 8 9417 2300.

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