Marketplace for Mechanical & Electrical Industry

Technical specifications

Structural members

Made of high strength fine grained steel, welded torsion-resistant frame type construction with large cross-section, high load-bearing capacity.

Boom

I basic boom and 4-telescoping sections, quadrilateral cross section welding structure. Double-cylinder plus ropes telescoping mechanism is for synchronous plus sequential telescoping. 8 pulleys on boom head are standard. Boom length: 12.4m ~ 48m.

Outriggers

4 outriggers, H-shape arranged, which are located at both sides of chassis frame, controlled by hydraulic valves and the cylinders are controlled by electric signals. Front and rear towing eyes are available.

Jib

2-section,lattice and box welding structure, with three jib off set angles of 0° ,20° and 40° available.

Jib length: 11.7m 〜20.6m.

Engine

QSL, in line six-cylinder water-cooled compression ignition diesel engine, manufactured by Cummins, US, rated power is 224 kW/2100rpm, max. torque is 1369Nm/

1300〜1500rpm, offroad U.S. EPATier 3/EU Stage IIIA emission standards. Fuel tank capacity： Approx. 300L.

Operator's cab

Integrated design, appearance is simple and artistic. It is all-weather and equipped with large arc glass, which has a wide vision, as well as spacious and comfortable due to ergonomic inner design.

Equipped with air conditioner.

Hydraulic system

The constant power variable displacement pump is used for controlling the movements of crane.

Oil tank capacity: Approx. 1250L.

Safety devices

Hydraulic balance valve, hydraulic relief valve, hydraulic double-way valve and LML Lowering limiter is equipped in winch to prevent rope over-releasing. Anti-two block is fitted on the boom head to prevent rope overwinding.

Operating mode

Electric controlled pilot operation system is equipped with two electric proportional control levers controlling the main movements of the crane.

Counter weight

Total weight is 5t, fixed counterweight,

Transmission

6WG260, German ZF automatic transmission.

Electrical system

DC 24 V, two batteries in series.

Axles

German KESSLER axles with great load bearing capacity. Both front and rear axles are drive axles for steering.

Hook block

70t hook block,4 sheaves,single hook

Suspensions

Front axle is rigidly connected to the frame. The rear axle is attached to the swing-type hydraulic suspension, which may be rigidly locked. During highway driving operation, shock absorption function is activated, which buffers the road shock. When driving with a suspended load, rear suspension cylinder is locked to rigid state to meet operation requirements.

Additional equipment

Tires

4 tires, each axle is equipped with single tire, load bearing capacity is great.

Tire specifications: 33.25 R29.

Air conditioner

Equipped in the cab, for improving comfortable performance.

Steering

Full hydraulic electro-proportional multimode steering: front axle independent steering mode, tight-turning radius mode, crab walk mode and rear axle independent steering mode.

Hook block

120t hook block,8 sheaves,double hook.

25t hook block,2sheaves,single hook.7thook block,single hook.

Brakes

Service brake: double-circuit full-hydraulic disc brake, acting on all wheels. Selfbraking works in case the pressure in the braking system becomes too low.

Parking brake: spring-loaded, hydraulic- released independent disc brake, acting on the front axle.

Differential locks

With these differential locks fitted, pass

ability may be improved in case of slipping

when driving on difficult roads or single-side

tires slipping due to partly suspended drive wheels.

Main winch system

Driven by a hydraulic motor, with build-in

planetary gear reducer, constant closed brake and rotation resistant wire rope equipped, having features of high speed with light load and low speed with heavy load.

Auxiliary which system

Driven by a hydraulic motor, with build-in planetary gear reducer, constant closed brake and anti-coiling wire rope equipped. 

Slewing system

Single-row, four-point contact-ball slewing

bearing, driven by hydraulic motor, with built- in planetary gear reducer and constant-closed brake equipped, and may continuously slew 360° .

Product parts list is as mentioned above, please refer to the product quotation for specific parts.

XCMG——RT120E

Weight（18t counterweight）

Axles

1

2

Total weight

kg

41560

37940

79500

Hook block

No.of sheaves

Remarks

70t

4

Single hook

Working speeds （18t counterweight）

Km/h

33.25 R 29

33

60%

Mechanisms for operation

Working speeds

0-135   m/min, no load, 4th layer,

0-135   m/min, no load, 4th layer

0-2      r/min

Approx. 80s for boom elevation from -2° to 80°

Approx. 150s for boom extension from 12.4m to 48m

XCMG——RT120E