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Cormach Knuckle-boom Cranes

Discover Cormach Power and innovative systems, including continuous slew, inline booms and BIG crane design, available over the entire range!

Are you looking at a Palfinger, HIAB, Effer or PM?  Call us to compare features, specifications and above all value for money!

Light Crane Range

Medium Crane Range

Heavy Duty Cranes

4000E
6800E
8700E
9800E
12000E

12000T
13500T
16600E
17900S
18000E

22500E
25500E
27500E

27700S
28200E

34000E
38000E
40400E
49000E

51800E
60200E
65000E
88000E
Over 88000

What do the Abbreviations & Symbols mean? Click here to find out


Why choose a Cormach and over a Palfinger, HIAB, effer, PM or Terex?  Here are just a few good reasons as to why you should seriously consider a Cormach as your next new or used Truck Loader Crane!
 

Cormach cranes are designed right!

All Cormach Truck loader cranes feature the same design from the boom hinge downwards.  A twin column turret being the first major feature you will notice. A proper 'big crane' slew bearing with external motor and gear box drive with an incorporated slew brake. This slew ring is mounted right down on the chassis frame.

   
   Cormach Design
  
Cormach design calls for stress dissipation, not stress concentration.
  • The cantilever profile of the twin columns dissipates the lifting stresses and shock loads evenly into the big slew bearing and, through that, into the outriggers and to the ground, with the chassis acting as the counterweight.
  • The box cross-section of the twin columns is calculated to handle torsional stresses created by abusive slewing, and to absorb the shock and sudden stops, starts and reversals.

All single column cranes have an unavoidable point of big stress at the upper bush. This is overcome by the use of very thick steel walls in the turret. This inevitably has excessive torsion rigidity that transmits all the rotational shocks of poor handling straight into the pinion. If you make a truck chassis rigid, and prevent it flexing to absorb shock, you know that its life will be substantially reduced. The same is true of crane design.

 Cormach stress dissipation

 
The Cormach System.

Most knuckleboom crane manufacturers use the Cormach system with slew bearing and turret for their big, high capacity units. Only Cormach uses this system on their entire product line. From this fundamentally sound design arise many advantages:

  • Symmetry about the centerline is achieved.
    No Cormach has off-set columns or booms.
    This results in evenly distributed loads in all pins, bearings and bushes.
  • Low center of gravity - Cormach cranes have their heavy components down near chassis level to give a low center of gravity.
  • Continuous slew rotation - is standard from 38 tonne meter cranes and upwards, and optional on all smaller models. This is not possible with rack and pinion rotation.
  • Two cylinders - one on either side - are used to raise the main boom for optimum stress dissipation. Either could support the load in an emergency.
  • Lower crane weight - Due to the design, Cormach cranes are usually substantially lighter than competitive models.
  • Less mounting space - Cormach design takes up less chassis frame space than competitive models.
  • Easier Safety inspections - parts are all open to view.
  • Easier Maintenance - much easier with the "Big Crane" design
    1. All parts are visible
    2. All wear is measurable
    3. All leaks are immediately traceable
 

Cormach Slew system

   

This basic advantage of CORMACH CRANES will become apparent as you become familiar with the quality of design and workmanship, which is built into each and every crane Cormach produces.

If you would like more information on the Cormach Knuckle-boom range or a quotation then please call or use the Contact Us page of this website.