Liebherr R 946 User Manual

Crawler excavator	R 946
Operating Weight: 38,400 – 41,950 kg
Engine Output:	200 kW / 272 PS
Bucket Capacity:	1.25 – 2.50 m³

R 946

Operating Weight: 38,400 – 41,950 kg

Engine Output:	200 kW / 272 PS
Bucket Capacity:	1.25 – 2.50 m³

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Performance

Thanks to its innovative Advanced excavator system technology, the R 946 crawler excavator has performance features that are truly unique. Characteristic elements of this system technology include the particularly effective and energy-efficient Positive Control twincircuit hydraulic system, which was specifically designed for machines with a high level of superimposed functions and operational movements. The electronic pump control arrangement sets this technology apart, creating a new standard for performance and quantity control that entirely matches the operator’s needs.

Reliability

Liebherr provides customers with solutions that lead the way for the future, solutions for maximum equipment reliability and availability, solutions which satisfy the most extreme demands for performance and quality. With more than 50 years experience in the construction of hydraulic excavators, we have an advantage in design and consultation that clearly sets us apart.

Comfort

In the cab the driver can look forward to a workplace designed in accordance with the very latest findings in ergonomic science, with emphasis on comfort and ease of operation. The optimised arrangement of the hydraulic hoses means that the driver has en even wider field of vision, and the heating and climate control system fitted as standard means pleasant working conditions inside, whatever the weather. Liebherr crawler excavators are also particularly easy to service – maintenance tasks can be carried out easily and rapidly at readily accessible service points.

Economy

Crawler excavators from Liebherr guarantee maximum productivity. The optimum interplay of hydraulics and electronics means that individual movements and superimposed movements alike can be carried out particularly efficiently. And, perhaps last but by no means least, the perfect harmonisation of all the components means that energy expenditure during operation can be kept to an absolute minimum.

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Modular quick-change system made by Liebherr

•Likufix – connects all hydraulically mounted tools without having to leave the operator’s cab, maximum productivity due to tool change being performed in a matter of seconds

•The suitable digging tool for every application. Your machine is a multifunctional tool carrier and will pay for itself very quickly indeed

•Mechanic and hydraulic Liebherr quick-change adapter

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Performances

Thanks to its innovative excavator system technology, the R 946 crawler excavator has performance features that are truly unique. Characteristic elements of this system technology include the particularly effective and energy-efficient Positive Control twin-circuit hydraulic system, which was specifically designed for machines with a high level of superimposed functions and operational movements. The electronic pump control arrangement sets this technology apart, creating a new standard for performance and quantity control that entirely matches the operator’s needs.

Integrated excavator system technology

	High-tech for high	Among the high-tech equipment on the Advanced
	performance	version of the R 946 is the newly-developed inte-
		grated excavator system technology. This is based on
		the Positive Control hydraulic system, controlled by
		Liebherr electronics and the system software. The
		sensors located at strategic points on the machine
		form the basis for an intelligent system that allows for
		fast and fluent working.
	Positive Control	When travelling straight or in a curve, and during
	twin-circuit hydraulic	levelling work, the two pump circuits of the hydrau-
	system	lic system are separated or grouped together, as the
		need arises. Separation of the systems means that
		different consuming components can be supplied
		with different load pressures independently, and
		saving energy too. By contrast, grouping the pump
		circuits allows for maximum speeds with individual
		or superimposed movements, and that means opti-
		mum energy utilisation.
	Power and speed
	Faster work cycles	The R 946 achieves particularly fast work cycles,
		thanks, for example, to the powerful slewing drive of
		the superstructure, the rapid slewing rates, and the
		creation of high slewing torque.
	Operating	With an operating pressure of 380 bar, the R 946
	pressure	achieves higher hydraulically limited load capaci-
		ties and higher digging forces, of up to 229 kN,
		and break-out forces of up to 238 kN; perfect for
		more difficult operational situations such as canal
		or pipeline construction.
Wide range of operational		Liebherr Diesel Engine
possibilities		• Specifically designed for construction equipment
• Large number of equipment variants
		• Maximum output at low engine speed
• Versatile selection of undercarriage		• Long life expectancy
variants		• LIDEC-Engine Control – Liebherr Diesel Engine Control
• Broad operational spectrum, from		• State-of-the-art technology with common rail injection
earthmoving, to grading work, to		system
demolition		• Electronically regulation of injection-amount and-timing
		• Complies with emission standard IIIB/Tier 4i

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LiDAT data transfer system

•Complete fleet management, all from one source

•Optimized economical performance of the machine park thanks to detailed view of the distribution of operating states and times

•Reports on capacity commitment and the use of the machine park can be called up daily via the Web portal

•Precise location of the machine

•Regional delimitation and fixed downtimes increase safety and reliability

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Reliability

Liebherr provides customers with solutions that lead the way for the future, solutions for maximum equipment reliability and availability, solutions which satisfy the most extreme demands for performance and quality. With more than 50 years experience in the construction of hydraulic excavators, we have an advantage in design and consultation that clearly sets us apart.

High stability undercarriage

Better force distribution The undercarriage concept leads to increased performance with improved service life. Thanks to the connection of the middle section being extended as far as the ends of the chassis beams, known as the X-design, the forces are better distributed, which increases the service life of the undercarriage.

Technology with perspective

Quality right down	The at-a-glance layout of the hydraulic, lubrication,
to the last detail	and electricity lines makes for optimum functional
	reliability and maximum availability of the unit. Best
	possible corrosion protection is guaranteed thanks
	to components and modules being finalpainted and
	surface treated before assembly.
Perfect optimisation	Individual components of the drive train, manufac-
	tured in-house, such as diesel engine, traction drive,
	rotary actuators, operating pump and hydraulic
	cylinder are perfectly optimised with one another.
	As components of a total system designed for long
	operational life, they guarantee maximum possible
	reliability.

Safety of functionality

Safety of functionality	The cab is equipped with an integrated roll-over
ROPS cab structure	protection system (ROPS) in accordance with
	ISO 12117-2, guaranteeing driver safety in any
	situation.
Automatic control	The operator can entirely focus on his job, be-
of functionality	cause the integrated on-board electronic continu-
	ously performs a comparison with pre-determined
	target data. Eventual deviations from the target
	parameters are shown on the display.

Key technologies –		Spare parts service
Made by Liebherr		• Any spare parts required are
• Perfect matching of the components
		available within 24 hours – world-
to construction machine operations		wide. And that means high opera-
• Engine, hydraulic pumps, transfer		tional readiness of the machines,
		wherever, whenever
gears, travel drives, slewing drives,
slewing rings, and electronic compo-		• Over 80,000 spare parts in stock
nents – all from the same source		at all times
• Main steel components, such as
undercarriage, equipment modules,
and slewing superstructure, all
designed by Liebherr

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Touch-screen display

•7-inch touch-screen with colour display

•Wide range of adjustment, check, and monitoring possibilities

•Tough, reliable design (sealing tightness class IP 65)

•Video capacity with high resolution, reproduces the image from the rear area monitor camera in best possible quality

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