HYDRAULIC CRAWLER CRANE - KOBELCO CRANES

1 HYDRAULIC CRAWLER CRANE . Model: 7055-3F. Max. Lifting Capacity: 55 t x m Max. CRANE Boom Length: m Max. Fixed Jib Combination: + m, + m Max. Tower Jib Combination: + m CONFIGURATION. CRANE Boom Max. Lifting Capacity: 55 metric ton x m Max. Boom Length: m Fixed Jib Max. Lifting Capacity: 7 metric ton x m Max. Combination: m + m, m + m 1. CONTENTS. Configuration 1. Specifications 3. General Dimensions 5. Boom and Jib Arrangements CRANE Boom Arrangements 7. Fixed Jib Arrangements 7. Tower Arrangements 8. Tower Jib Arrangements 8. Working Ranges and Tower Jib Lifting Capacities Max. Lifting Capacity: CRANE Boom 12 metric ton x m Working Ranges 10.

2 Max. Combination: m + m CRANE Boom Lifting Capacity 11. Auxiliary Sheave Lifting Capacity for CRANE Boom 11. Fixed Jib Working Ranges 12. Fixed Jib Lifting Capacities 13. Tower Jib Working Ranges 15. Tower Jib Lifting Capacities 17. Parts and Attachments 21. 2. SPECIFICATIONS. Diameter of wire ropes Power Plant Boom guy line: 30 mm Boom hoist reeving: 12 parts of 16 mm strength Model:Hino diesel engine J08E-TM wire rope Type:Water-cooled, direct fuel injection, with turbocharger Boom backstops: Telescopic type with spring bumper Compiles with NRMM (Europe) Stage IIIA and US EPA Tier III. Required for all boom lengths Displacement: liters Rated Power: 159 kW at 2,000 min-1 {rpm} (ISO) Load Hoist System Max.

3 Torque: 797 N m/1,600 min-1. Cooling system: Liquid, recirculating bypass Front and rear drums for load hoist powered by a HYDRAULIC Starter: 24 kW variable plunger motors, driven through planetary reducers. Radiator: Corrugated type core, thermostatically controlled Brake: A spring-set, hydraulically released multiple-disc brake Air cleaner: Dry type with replaceable paper element is mounted on the hoist motor and operated through a counter- Throttle: Electric throttle control, twist grip type balance valve. Fuel filter: Replaceable paper element Batteries: Two 12 V,136Ah/5HR capacity batteries, series con- Drum lock: External ratchet for locking drum.

4 Nected. Drums: Fuel tank capacity: 400 liters Front drum: 550 mm x 545 mm Lg. wide drum, grooved for 22 mm HYDRAULIC System wire rope. Rope capacity is 175 m working length and 335 m storage length. Three variable displacement piston pumps are driven by heavy- Rear drum: duty pump drive. Two of variable displacement pumps are used 550 mm x 545 mm Lg. wide drum, grooved for 22 mm in the main hook hoist circuit, boom hoist circuit, auxiliary hook wire rope. Rope capacity is 125 m working length and 335 m hoist circuit, third hoist circuit and each propel circuit. The other storage length. is used in the swing circuit. Note: Rope lengths listed above denote drum capacity and may differ from actual rope lengths supplied when machinery is shipped.

5 Control: Full-flow HYDRAULIC control system for infinitely variable Line speed: Single line on the first drum layer pressure to front and rear drums, boom hoist brakes and Hoisting/Lowering: 120 to 3 m/min clutches. Controls respond instantly to the touch, delivering Tower Jib Hoisting/Lowering: 90 to 3 m/min(Rear drum). smooth function operation. Line Pull: Cooling: Oil-to-air heat exchanger (plate-fin type). Rated line pull (Single-line): kN { tf}. Filtration: Full-flow and bypass type with replaceable element Electrical system: All wiring corded for easy servicing, individ- ual fused branch circuits. Swing System Swing unit is powered by HYDRAULIC motor driving spur gear Max.

6 Relief valve pressure: through planetary reducer, the swing system provides 360 . Load hoist, boom hoist and propel system: rotation. MPa {325 kgf/cm2}. Swing parking brakes: A spring-set, hydraulically released Swing system: MPa {280 kgf/cm2}. multiple-disc brake is mounted on swing motor. Control system: MPa {71 kgf/cm2}. Swing circle: Single-row ball bearing with an integral internally Reservoir capacity: 440 liters cut swing gear. Swing lock: Manually, two position lock for transportation Boom Hoisting System Swing speed: min-1 {rpm}. Powered by a HYDRAULIC motor through a planetary reducer. Brake: A spring-set, hydraulically released multiple-disc brake Upper Structure is mounted on the boom hoist motor and operated through a Torsion-free precision machined upper frame.

7 All components counter-balance valve. are located clearly and service friendly. Engine with low noise Drum lock: External ratchet for locking drum. level. Drum: Single drum, grooved for 16 mm dia. wire rope. Counterweight: ton Line speed: Single line on first drum layer Additional counterweight: ton Hoisting/Lowering: 70 to 2 m/min Note: Additional counterweight is required when raising or lowering the tower length of m. 3. Shoes (flat): 59 shoes, 760 mm wide each CRAWLER Cab & Control Max. travel speed: km/h Max. gradeability: 40%. Totally enclosed, full vision cab with safety glass, fully adjustable, high backed seat with a head-rest and armrests, Weight and intermittent wiper and window washer (skylight and front window).

8 Including upper and lower machine, ton counterweight, Cab fittings: basic boom (or basic tower + basic tower jib), hook, and other Air conditioner, convenient compartment (for tool), cup holder, accessories. ashtray, cigarette lighter, sun visor, roof blind, tinted glass, floor Specification Weight Ground pressure mat, foot-rest, shoe tray CRANE boom Approx. ton, kPa { kgf/cm2}. Controls: Tower jib Approx. ton, kPa { kgf/cm2}. Four adjustable levers for front drum, rear drum, boom drum and swing controls Attachment Lower Structure Boom and Jib: Welded lattice construction using tubular, high-tensile steel Steel-welded carbody with axles.

9 CRAWLER assemblies can be chords with pin connections between sections. hydraulically extended for wide-track operation or retracted for transportation. CRAWLER belt tension is maintained by HYDRAULIC Boom and Jib Length jack force on the track-adjusting bearing block. Min. Length Max. Length CRAWLER drive: Independent HYDRAULIC propel drive is built into (Min. Combination) (Max. Combination). each CRAWLER side frame. Each drive consists of a HYDRAULIC CRANE Boom m m motor propelling a driving tumbler through a planetary gear Fixed Jib m + m m + m box. HYDRAULIC motor and gear box are built into the CRAWLER m + m side frame within the shoe width.

10 Tower Jib m + m m + m CRAWLER brakes: Spring-set, hydraulically released parking brakes are built into each propel drive. Steering mechanism: A HYDRAULIC propel system provides both skid steering (driving one track only) and counter-rotating steer- ing (driving each track in opposite directions). Track rollers: Sealed track rollers for maintenance-free opera- tion. Main Specifications (Model: 7055-3F). CRANE Boom Power Plant Max. Lifting Capacity 55 m Model Hino J08E-TM. Max. Length m Engine Output 159 kW/2,000 min-1 {rpm}. Fixed Jib Fuel Tank Capacity 400 liters Max. Lifting Capacity 7 m HYDRAULIC System Max. Combination m + m, m + m Main Pumps 3 variable displacement Tower Jib Max.