Sennebogen green 768x252 - 7700E Crawler Crane

7700E Crawler Crane

Lifting Capacity : 280-300t
Boom height : 155m
Engine capacity : 313kW
Winch : 220kN

Engine

Model CAT C11 ACERT Output 313 kW at 2000 rpm
Direct injection, turbo charged, intercooler, reduced emission
Cooling Water cooled Air filter Dry air filter with precleaner, automatic dust
discharge, main and safety element, pollution indicator
Fuel tank 1100 l Electric system 24 V
Electric installation simple and very clear design Batteries 2 x 150 Ah, main switch

Hydraulic-system

4 circuit hydraulic system for best funktion and performance, all functions can be driven simultaneously. The hydraulic pumps are variable displacement piston pumps with individual regulation for each pump. The pumps are equipped with an energy-saving flow-ondemand control and preasure cut-off for high-efficency and reduced loss of energy.
Oil flow max. 3 x 420 l/min 1 x 270 l/min
Pressure max. 340 bar

Swing drive in open loop circuit. Axial piston pump and extra precise swing drive motion.
Filtration High-efficiency filtration with long-time change interval, pollution indicator SENNEBOGEN HydroClean micro filtration with water separation,
Hydraulic tank 1020 l / 880 l Steering Proportional, servo hydraulics, precise control
of the working functions, 2 servo joysticks for operating movements, additional functions through switches and foot pedals – in a clear and ergonomic layout

High efficiency through well sized hydraulic valves and lines
Central test ports for hydraulic circuits
Safety valves for all hydraulic circuits

Winch 1 - Winch 2

Each winch is driven independently by a directly flanged variable displacement hydraulic piston motor with high pressure regulation. Hydraulic brake valves for wear resident breaking of loads. Saftey parking breake through spring loaded multi disk brake in oil bath. Mainwinch 1 and 2 Line pull max.
1th layer: 220 kN Line pull
7th layer: 150 kN
Rope dia.: 28 mm
Drum dia.: 725 mm
Line speed: 0-140 m/min
Rope capacity 7 th layer: 610 m

Swing drive 360° endless

2 Compact planetary reduction gears with hydraulic piston motor, integrated brake valves (3rd gear optional)
Parking brake Multi-disc brake, spring-loaded Swing bearing Strong triple roller bearing, sealed Swing speed 0-2,0 rpm

Boom Hoist Operation

Lattice boom pipe construction made from high tensile steel with pinned joints.
Main Boom hoist winch
Luffing jib winch
The boom hoist winch is integreated in to the superstructure line pull 2×165 kN rope dia. 26 mm boom hoist 30° – 80° in 77 sec. is intgreated in the boom foot line pull max. 160 kN rope dia. 26 mm
Safety brake Spring-applied multi-disc brake Crane safety State-of the-art safe load indicator with graphic display, hoist limit switch, pressure relief valves, rope limit switch

Cooling System

Large sized cooling system for the engine and hydraulics. Very energy efficient and noise emission reduced through thermically controlled drives.

Upper Structure

Torsion resistant box type design, precision machined, brass bushes for the boom pivot. Clear, very servicefriendly design longitudinal installation of the engine

Undercarriage

Very strong and stiff welded construction with well protected integrated drive units. Standard equipment are undercarriage outriggers and central lubrication.
Drive system Each drive unit is equipped with a strong hydraulic axial piston drive motor and directly mounted brake valves, each drive can be controlled independently infinitely variable in both directions.
Parking brake Multi-disc brake, spring-loaded Tracks Maintenance free tracks system with flat track shoes running on 14 rollers per crawler. Regularly equipped with integrated tensioning cylinders. Flat shoes optional
Travel speed 0-1.4 km/h

Working equipment

Tubular boom 13.1-74.7 m, double sheave hammer head, luffing jib, fixed jib, auxiliary jib. Complete crane safety device with electronic SLI safe load indicator.

Operators cab

SENNEBOGEN maXcab with sliding door, excellent ergonomics, automatic heating/air conditioning with temperature pre-select and fresh air/ recirculation filter, air suspended comfort seat optionally adjustable, excellent 360° visibility, SENNEBOGEN Diagnostics System For Transport the cabin can be swung to the front of the superstructure.

Service weight

7700 Basemachine with 1.200 mm flat tracks, 2 main winches 150 kN, main boom consisting of boom foot, boom head, boom insert 5,6 m, 130t counterweight, 40t car body counterweight, 200t hook

Approx. service weight:

285 t

 

* Further details see adobe specifications download or please contact PACECRANES.
† Due to improvements, the specifications are subject to change without notice.