Crawler excavator - Bergmann Maschinenbau - #11

Two pumps are controlled by the Kato developed "APC" ( Automatic Power Control ) system, which senses where power is needed and automatically adjusts the pressure and flow-rate of the pump to match the work load. New "APC" system enables pump output to be utilized to the full with minimum fuel consumption. The adoption of joint circuit enables dual speed for boom derricking and arm extension/ retraction.

Pumps .........Variable double piston pump and gear pump

Max. discharge flow ......................................2 x 247 l/min

Max. discharge pressure....................................31.4 MPa

Max. discharge pressure (travel circuit only) .......32.9 MPa

Oil filtration .........Full-flow filter with replaceable element,

a drain cartridge filter,a pilot line filter and a suction strainer

Control valves ...........5 + 4 section multiple control valves

(with one free service circuit)

Pilot pump .........................................................Gear type

Oil cooler ...........................Finned tube, forced ventilation

Pressure relief valves...................Primary and secondary

on each circuit

Spring-applied idlers protect the drives from shock. Adjust cylinder is provided for easy arrangement of the track tensioning. An all welded undercarriage frame gives clog-free clearance, and the drive motors are neatly housed inside the track frame. The crawler tracks with interchangeable shoes are supported by 8 lower rollers, 2 upper rollers and a guard plate on each side.

Travelling motors .............Independent axial piston motor

with reduction for each side

Brakes ......Independent disk parking brake for each side,

applied automatically when the travel levers are in the neutral position.

Track shoes .................................................47 each side

Track adjustment ......Grease cylinders with recoil springs

Lubrication .............Sealed-for-life rollers and front idlers

with floating seals

Travel speed ...........................................High 0~5.5 km/h

Medium 0~3.9 km/h Low 0~2.7 km/h

Gradeability.......................................................70% (35°)

Max. drawbar pull ...........................186.3 kN (19,000 kgf)

Ground clearance (less grouser bar) ...................480 mm

Track length ......................................................4,260 mm

The all-weather sound suppressed, 1,000 mm wide pressed steel cab is six point viscous mounted and has plenty of leg room. All windows are made of tinted safety glass. The front window can be raised and slide back so that it fits flush with the ceiling to provide improved visibility and ventilation. The cloth-covered, fully adjustable seat is provided. Operating conditions can be seen at a glance on safety monitor.

Right hand lever ...................Controls the boom & bucket

Inner right hand lever (with foot pedal) ..Controls the right

hand track

Inner left hand drive (with foot pedal) ......Controls the left

hand track

Left hand lever ..........................Controls the arm & swing

Pilot control.............Travel, boom, arm, bucket and swing

Engine throttle....................................Electric "Accel dial"

Meter & gauges ...............Hour meter, water temperature

and fuel level

Monitor display Engine oil pressure, engine oil filter, hydraulic oil filter, hydraulic oil temperature, water temperature, water level, fuel level, battery charge, APC

monitor and air cleaner.

Indicator lamps ...........Caution lamp & Engine preheater

indicator lamp

Working lights ..........Provided on the boom left side and

mounted on the frame Lubrication chart..................................Inside the tool box

Model.....................Mitsubishi 6D34-TLE2A diesel engine

Type.........................4 cycle water cooled,overhead valve

...........................direct injection, intercooler turbocharged

Number of cylinders-Bore x Stroke ....6-104mm x 115 mm

Total displacement....................................................5.86 l

Rated output.........125 kW @ 2,150 rpm (Based on ISO)

.............................................................170 PS/2,150 rpm)

Max. torque...........620 N«m @ 1,600 rpm (Based on ISO)

..........................................................61 kgf'm/1,600 rpm)

Compression ratio....................................................18.2:1

Combustion system....................................Direct injection

Specific fuel consumption ..........................220 g/kW-hour

Cooling system.............Pressurized water circulated by a

centrifugal pump with thermostat

Lubrication system.....Pressurized oil fed by a gear pump

through full-flow and by-pass cartridge filter

Starter.................................................Electric, 24 V-5 kW

Generator..........................................Alternator, 24 V-35 A

Governor..........................................................Mechanical

Air cleaner....................................................Dry type filter

APC & Accelerator back up switch

Lever switch

Combination monitor Accelerator dial

High power

switch

Quick accelerator switch

Pressure sensor

Accelerator emergency

APC

emergency

APC 100 controller

circuit

■ Air conditioner control panel (option)

Combination monitor

"APC" system

Travelling motor with reduction

Radiator with screen

• Intercooler,

Oil cooler, Radiator

The hydraulic gear-driven swing is powered by an axial piston motor with shockless valve that is flange-connected to a planetary reduction unit. It rotates 360°continuously on the single row-ball bearing that has an integral, internally cut swing gear, and is totally enclosed to prevent the ingress of mud and water. Brake A hydraulic brake that locks automatically

when the swing control lever is in the neutral position and a mechanical parking brake which is applied when the safety lock lever is pulled backwards, the engine is turned off or the swing control lever is in the neutral position.

Lubrication ..........Completely housed and grease bathed

Max. swing speed .............................11.0 min^-1(11.0 rpm)

Tail swing radius................................................2,940 mm

Min. front swing radius ......................................3,880 mm

The boom and arm are of all-welded, steel box section type with reinforced pin joints. Bucket is fabricated from high tensile strength steel.

Boom cylinders ....................................Two, double acting

Bore & Stroke...............................140 mm x 1,370 mm

Arm cylinder .......................................One, double acting

Bore & Stroke...............................150 mm x 1,680 mm

Bucket cylinder ...................................One, double acting

Bore & Stroke...............................130 mm x 1,155 mm

Lubrication .....................Grease nipples, with centralized

greasing for remote points

Bucket digging force..........................167 kN (17,000 kgf)

(High power)..................................174 kN (17,800 kgf)

Arm digging force ..............................159 kN (16,213 kgf)

(High power)..................................167 kN (17,029 kgf)

(High power can be used with STD arm and short arm)

Fire wall

Fuel tank...................................................................380 l

Cooling system ........................................................25.5 l

Engine oil ....................................................................22 l

Track drives ..........................................................2 x 3.3 l

Swing drive ..............................................................11.3 l

Hydraulic oil tank

(level) ......................................................................165 l

(system) ..................................................................290 l

In standard figure, with the 2.96m arm, 600mm grouser shoes and 1.0m³ (ISO) bucket.

Operating weight ...............................................23 200 kg

Ground pressure ................................................50.0 kPa

4

5