Packed with more features and increased performance, Claas has given its Scorpion telehandlers a complete overhaul. James Rickard tries out the second largest model, the 7055.
The latest versions of Claas’ Scorpion telehandlers are the first major updates since the firm introduced the range back in 2006.
Centred around increased hydraulic and lift capacity, along with more power and functions, the new six-model range essentially comprises three small-framed models and three large. Lift capacities range from three tonnes to 5.5t, with lift heights ranging from six metres to 8.8m.
Our test model was the second largest machine, the 7055 with, as the model number denotes, a lift capacity of 5.5t and a lift height of 7m.
Power comes courtesy of a four-litre Deutz engine which produces 156hp. Emissions meet Stage 3b levels using exhaust gas recirculation, a diesel particulate filter and a diesel oxidation catalyst, so no need for AdBlue.
Jumping aboard, you soon notice the lofty seating position affords good views to all corners giving the impression the machine is smaller than it actually is. One-piece front and side screens also provide good views to the boom when raised. As some Scorpion operators will be glad to hear, the extensive windscreen now gets a double wiper to reach more area.
With the joystick mounted on the armrest and the steering column having adjustable reach and rake, the ideal seating position can be found with hardly any compromise.
In Claas style, the interior airs on the side of practicality and functionality, with colour-coded switches denoting the differences between the functions – red for safety, green for hydraulics and grey for everything else. Clear analogue dials allow you to glance for information, with gauges for revs, speed and temperature nestled in the right-hand pillar. Back-lit buttons also help in dark sheds.
However, our favourite switch in the cab was the one to select the new handling modes – bucket, pallet and manual, not that you actually have to use a bucket or pallet in either mode. In bucket mode, the boom will automatically retract when it is lowered, which came in very useful when loading from the floor. When handling bales, we selected pallet mode which makes the attachment automatically lift and lower vertically, following a straight path rather than arced. Manual does what it says on the tin.
Hydraulic flow capacity is up to 187 litres/minute from 150 litres/minute, which certainly showed during operation. All joystick inputs were met with a swift response as and when we needed it, with proportional and conveniently positioned controls giving precise movements of boom and attachments.
To prevent forward overturning, when the boom reaches its safe load limit, the boom comes to a halt then you are allowed to make any movement as long as the load is brought closer to the machine. If necessary, you can override the system for 60 seconds by pressing a button, which is a two-handed operation.
Even when handling the heaviest of loads the Scorpion felt very stable, giving lots of confidence. In and out of buildings, it was agile enough, highlighted when mucking out a less than ideal pen.
The 7055 gets Claas’ Varipower-spec transmission, which is essentially a really wide-angle hydrostatic pump offering a large speed range from 0-40kph. It also offers more torque compared to narrow angled pumps and it means no need for mechanical ranges, says the manufacturer. However, virtual ranges can be selected, on the go, via buttons on the joystick which offer ranges from 0-8kph, 0-15kph and 0-40kph.
For each range, the full amount of pedal travel can be used from 0kph to the top speed of whatever range you have selected. This function really comes into its own when inching in low range, allowing even heavy-footed people to be precise.
Transmission delivery is really smooth as is direction change, although, direction changes do feel a little lazy, but this depends on personal preference. If more traction is required, a front differential can be locked via a button on the rear of the joystick.
When applying the brakes, the first portion of the pedal travel reduces the oil flow to the wheels, in turn sending more oil to boom and attachment. This avoids that fight you get between the transmission and the brakes you often find with torque convertors. Once beyond 70 per cent of pedal travel, the brakes are then applied.
Much like modern day cars, it features an automatic handbrake which engages when the engine is stopped and disengages when a direction of travel is selected. This is actually quite useful, but to manually do this means holding the switch for what seems like an age.
Clever design features include external wear plates between the boom and the chassis, which securely hold the boom in place when pushing, preventing any lateral movement, thus putting less strain on the boom’s main pin. Also helping with maintenance are easily accessible wear pads between the two boom sections and centralised greasing banks.
To prevent shock when retracting the boom, there is an in-built ‘cushioning’ effect for the last portion of the retract.
Boom suspension is also a feature which can be either switched off, set to automatic or put in constant float. This is simply done via a rocker switch and does not involve any ridiculous procedure to go through unlike some others. When auto is selected boom suspension automatically disengages below 8kph to give you accurate boom control at slow speed. For example, you get the cushioning effect when racing across a field with a bale of straw, then the accuracy for stacking when you reach the trailer.
Geometry of the tilt and crowd ram has been altered to offer increased tear out force, which was certainly noticeable when mucking out.
Hydraulic locking and unlocking of attachments is done via the third service in conjunction with a diverter switch. The third service can also be set to constantly pump for attachments such as sweepers. Flow rate can be altered via a dial.
A great optional feature near the headstock is a hydraulic dump button, which takes the pressure out of the third service lines making it easier to swap attachments.
Under the bonnet, the designers have cleverly redirected air so fresh air is drawn in the front portion of the engine bay, with hot air expelled out of the upper/rear part instead of towards the floor – avoiding dust and debris being blown up. A reversible fan is fitted as standard which is activated manually.
Aside from a few teething problems involving a seat sensor, once the Scorpion was up and running it really impressed.
It seems a well refined machine from the interior of the cab through to the delivery of the hydraulics. It is pretty stealthy too, producing low noise levels inside and out of the cab.
Comfort levels have really been taken care of making it much more akin to a tractor.
Direction changes could do with being just a bit more aggressive for speedier cycle times, but apart from that, the manufacturer has done a good job.
Aimed at larger scale farms, we think the 7055 will suit those wanting the bulk handling capacity of a wheeled loader coupled with the versatility of a telehandler.