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

Ibase boom and 4 telescoping boom sections, quadrilateral cross section welding structure. Double-cylinder plus ropes telescoping mechanism is for synchronous plus sequential telescoping. 7 pulleys on boom head are standard Boom length: 11.9m ~ 46m.

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.

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.

Engine

QSL, in line six-cylinder water-cooled compression ignition diesel engine, manufactured by Cummins, US, rated power is 209 kW/2100rpm, max. torque is 1424Nm /1500rpm, off-road U.S. EPA Tier 3/EU Stage IIIA emission standards.

Fuel tank capacity : Approx. 300L.

Safetydevices

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

Hydraulic system

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

Counterweight

Total weight is 10t, 3 counterweight combinations of 0t, 5t and l0t are available.

Operating mode

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

Electrical system

DC 24 V, two batteries in series.

Transmission

6WG210,GermanZF automatic transmission,

Hook

90t hook block, seven sheaves, double hook.

Axles

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

Additional equipment

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 fiinction 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.

Auxiliary which system

Driven by a hydraulic motor, with build-inplanetary gear reducer, constant closed brake and rotation resistant wire rope equipped.

Tires

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

Tire specifications:29.5 R 29.

Jib

2-section,lattice and box welding structure, with

0° , 15° and 30° jib offset angles available. Jib length: 10.5m ~ 17.5m.

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.

Air conditioner

Equipped in the cab, so as to improvethe comfort for operator.

Brakes

Service brake: double-circuit hydraulic discbrake, acting on all wheels. Self-braking 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.

Hook

50t hook block, four sheaves, single hook. 6t hook block, the max. parts of line is 1.

Main winch system

Driven by hydraulic motor, with built-inplanetary gear reducer, constant-closed brake

and anti-coiling wire rope equipped.

It has features of high speed with a light load and low speed with a heavy load.

Differential locks of front and rear axles

With these differential locks fitted, pass ability front may be improved in case of slippingwhendriving on difficult roads or single-side tiresslipping due to partly suspended drive wheels.

Slewing system

Single-row, four-point contact-ballslewing 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——RT90E

weight

Axles

1

2

Total weight

kg

30350

27650

58000

Hook block

No.of sheaves

Remarks

90t

7

double hook

Working speeds

Km/h

29.5R 29

36

60%

Mechanisms for operation

Working speeds

0-125m/min, no load, 4th layer,

0-125    m/min, no load, 4th layer

0-1.8     r/min

Approx. 85s for boom elevation from -1.5° to 80°

Approx. 152s for boom extension from 11.9m to 46m