The telescopic loader range from Claas contains the company’s hydrostatic Varipower drive. This drive will soon be enhanced with a CAN-based transmission-engine communication system.
A COMMON FEATURE OF TELESCOPIC LOADERS working in agriculture is the need to cope with frequently changing driving and working conditions. Therefore the optimal coordination of the transmission and engine plays an important role. With the introduction of the latest Scorpion 7050, the company is not only introducing an additional model that fills the gap in the upper power segment between the current Scorpion 7044 and 7055 models, but it also features an electronic transmission-engine communication system, which will be adopted throughout the entire model range.
In summer 2013, the company presented a telescopic loader model range with increased loading and hydraulic performance in addition to improved driving dynamics and comfort. The six Scorpion models have lift heights of between 6,15 m and 8,75 m combined with lift capacities of between 3,0 and 5,5 t.
Version 7050, which has a lift capacity of 4,8 t and a lift height of 7,0 m, is the successor model to the Scorpion 7045, which is especially popular with farm contractors and owners of large farms. The company says, as with the previous model, their customers particularly appreciate the product’s loading capacity, the flexible ground drive and its fuel-efficient operation.
The model range comes with Deutz diesel engines, which have a power output of either 91 kW or 116 kW, and are used as drive assemblies. The model offers the possibility to automatically lower the diesel engine speed by approximately 15 % as a standard feature under the name Smart Roading. The drive concept of the released model range has been developed in accordance with the tried-and-tested principle of the Claas Power System (CPS). An important aspect is the intelligent hydrostatic Varipower drive, which constantly and automatically coordinates speed and thrust, continuously up to a maximum ground speed of 40 km/h.
Starting in 2015, the company plans to enhance the Varipower drive with the incorporation of a CAN-based transmission-engine communication system, which will be used across the whole model range. This ensures that the diesel engine will automatically operate at optimal capacity. This results in reduced fuel consumption and less noise development but with the same performance data – whether during loading work or when driving on the road. Due to the improved efficiency achieved this way, it is now possible to cover driving performances with a 91-kW diesel engine for which a larger engine would have been required in the past.
For engine cooling, the company has developed an air-ducting concept. This means that air flows through the engine compartment against the direction of travel and leaves the engine compartment in the upper area of the engine pan, together with the exhaust gases. When reversing the ventilation system, clean air is mainly sucked in from the top, rear section of the engine pan. This allows high air volumes to enter the counter-current without risk of contamination.
Four operating modes are available: bucket mode, stack mode with vertical lift and manual mode. In all operating modes, so called smart handling causes the loader's drop rate to adjust to the weight and angle of the load, which is a standard feature on all models. Another added automatic function is the bucket return position facility. At the touch of a button, the attachment can be brought to a specific position within the tipping angle. This can always be restarted when working.
For lifting heavier loads while ensuring stability, the telescopic loaders have a chassis with a low pivot point of the telescopic arm in the chassis. The entire loading system has also been redesigned. The lifting, tilting and telescopic cylinders are now fitted with end-of-return damping and the boom now has a load stabilizer with automatic vibration damping, which is activated automatically when the ground speed reaches 7 km/h or above.
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