Gulf Construction Online - Bobcat promises superior stability

Excavators

The 335 ... combination of stability and power.

Bobcat promises superior stability

01 March 2007

Bobcat has expanded its range of mini-excavators with the recent launch of the new 4.2-tonne 335 model, which offers optimum weight distribution, providing the best stability for lifting work as well as general excavation, digging for foundations, demolition work and other applications in all types of working conditions, says a spokesman for the construction equipment specialist.

With an operating weight with canopy of 4,152 kg (4,271 kg with cab), the 335 excavator fills the gap between the 331/334 (three to four tonne) and 337/341 (five to six tonne) models in the Bobcat range of mini-excavators.
“Like the other models in the Bobcat range, the 335 combines excellent stability with superior power and performance, including high breakout forces and quick cycle times. This combination of performance and economy of operation ensures that the 335 appeals to a wide range of customers, particularly rental companies, drainage contractors and landscapers,” says the spokesman.
The cab on the 335 is designed to provide maximum operator comfort whilst reducing the overall height of the machine. The result is a more compact mini-excavator that is easier to transport with less risk of damage to the cab, he says. At the back of the cab, the tailgate provides strong protection for the engine and other components and opens wide to offer the finest service access on the market, saving on the time and effort required to maintain the machine, he adds/
The 335 mini-excavator is powered by the 30.3 kW Kubota V2203-m-di-E2B-BC-4 turbo-diesel engine. Its maximum digging depth, with the standard dipper arm, is 3,564 mm and the maximum reach at ground level is 5,432 mm. The slewing speed of the 335 is 9 rpm and the boom can swing 90 degrees to the left and 50 degrees to the right. The auxiliary hydraulic flow of the 335 is 75 litres per minute.
The 335 have two travel speed ranges – 3.2 km/h and 5.5 km/h. Like the other Bobcat excavator models from the 331 and above, the 335 features a load-sensing hydraulic system for optimum use of hydraulic power in digging applications.
“Since the operator does not have to compensate for changes in flow or load conditions, the excavator is easy to control,” the spokesman points out. “Moreover, the load-sensing system provides precision at all engine speeds, with predictable movements, resulting in faster cycle times. The load-sensing system also reduces fuel consumption.”
A dual outlet piston pump provides increased flow, removing the need for an additional gear pump and enhancing the overall reliability of the machine. The combination of the load-sensing system and the new dual outlet hydraulic piston pump allows the use of smaller size cylinders on the 335, easing the work group and enhancing the balance and stability of the excavator.
A dual cylinder blade-float feature is standard equipment on the 335.
“Blade float is beneficial when backfilling material on hard or finished surfaces as the blade is able to follow the contour of the finished surface, removing only the previously excavated material,” the spokesman explains. “It is also useful when it is required to back-drag material. The dual cylinder design provides a durable support for work in tough operating conditions.”
Bobcat, which includes an extensive line of powerful compact construction equipment and attachments, is a business unit of the diversified industrial firm Ingersoll-Rand Company.