Independent suspension tractor on line

20 March 1998




Independent suspension tractor on line

By Andy Collings

CASE is set to launch a tractor with independent front wheel suspension later this year. Seen for the first time in the UK at one of the companys "Road Shows", the suspension will become an option for the 150hp CS150.

Developed at the Austria-based Steyr facility – a plant now considered by Case to be its engineering resources centre, the suspension system, comprises two hydraulically controlled parallel linkages.

A relatively simple system at first sight, the parallel supports allow each wheel to rise or fall vertically without affecting the tyres ground contact area.

Pressure in the hydraulic ram can be adjusted to alter the degree of suspension and also to alter ride height. Introduction of the system is also said to enable a 50kph box to be fitted to the CS150.

The Case Road Show – seen on this occasion at Duxford, Cambs – also provided the opportunity to see for the first time on UK mainland a number of other new developments.

Still on the tractor front, the new CX series made its first appearance since Agritechnica. Replacing the familiar 4200 series, the range comprises six models in the 50hp to 100hp bracket.

Claimed by Case to be 95% new, the CX models are powered by Perkins-built engines – the smaller 50hp and 60hp versions having 2.7-litre, 3-cyl blocks and the other four (70hp, 80hp, 90hp and 100hp) 4-litre 4-cyl engines.

Transmission options, depending on model, extend to an 8×8 synchro shuttle, 16×8 powershift, 24×12 creep speed with further options of a 40kph box on the larger two models.

Operator comfort, says Case, is enhanced through the use of the Maxxum cab – a move which also helps such matters as economy of scale.

The CX series, built at Doncaster, is due to make its appearance next month with production of the 4200 range now ceased.

Other delights at Duxford included sight of the revolutionary Arcus 2500 combine developed initially by MDW. Now available in red, following Cases acquisition of production and distribution rights for MDW combine harvesters, the machine is due to be evaluated in UK conditions.

With four-wheel drive, front-wheel steering and a twin rotor separation system which starts at the header – there is no elevator – the Arcus represents something of a break with conventional combine design. But not it seems, at the expense of output. Case claims outputs of up to 40t/hour have been achieved when working in wheat.

Suspension details of the CS150. Note the parallel design and the central hydraulic control ram.


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