HHD9 Rigid

Cost per ton 30 to 50% lower

Cost per ton 30 to 50% lower compared to a traditional Dump Truck.
Same 40 ton payload.
Lower purchase costs.
Lower maintenance costs.
Lower fuel consumption.
Lower time cycle.

Loads up to 11 tons

Loads up to 11 tons thanks to reinforced front drive axles and axles for the most arduous off-road use (routes with steep slopes or heavy loads concentrated on the front of the vehicle).

Loads up to 20 tons

Loads up to 20 tons for each rear axle with width of 2.9m and standard reinforced suspension.

Maximum load in excess of 40 tons

Maximum load in excess of 40 tons and GWW in excess of 60 tons thanks to reinforced rear tandem and drive axles.

Completeness and easy configuration

Completeness and easy configuration thanks the availability of a wide range of PTOs (on engine, between clutch and gearbox, on gearbox and transmission).

FRAME

820 mm wide, unique heavy duty chassis.

Two side members in high resistance special steel with a tensile strength of 530 Mpa with large sections to ensure easy equipment mounting, and most importantly, a high level of torsional stiffness (up to 300 kNm) and high stability in the most extreme situations.

Dimensions:
• 320x90x10 mm 3 axles
• 320x90x10 (+6) mm 4 axles

POWER RING

To increase the robustness and rigidity of the entire structure of the chassis, Astra has patented the power ring: a closed ring structure of the rear suspension, made up of cast iron carriage shoulders and a lower cross member, which improves the redistribution of forces on the tandem.

This permits a load of up to 40 tons on the rear tandem.

• Reinforced drive axles with 10 ton load

• Reinforced rear axles with 20+20 ton load.

Cursor 13 litre

Euro III from 480 to 540 hp (VGT)

Radiator

Radiator with large surface of 0.68 m² thanks to the increase in space provided by the structure

Max. power

Up to 540 hp (397 kW) @ 1900 rpm

Max. torque

Up to 2350 Nm from 1000 to 1690 rpm*
* specific low fuel consumption category

Brakes

3 axles:

Duplex front drum 25 kNm
Duplex rear drum 30 kNm

4 axles:

Simplex front disc 25 kNm
Duplex rear drum brakes 30 kNm

Engine brake power:

402 hp (300 kW) @ 1900 rpm

Iveco Turbo Brake (ITB):

Decompression engine brake which acts on the drain valves.

Retarder

Hydraulic retarders integrated in the gearbox:

• INTARDER, installed on the gearbox output shaft
• RETARDER, installed on the input shaft

ZF Ecosplit manual gearbox

ZF Ecosplit manual gearbox, ideal for less demanding quarry and mining missions.

• Dry single-disc clutch
• 16 FORWARD and 2 REVERSE gears
• Gear shift lever with double H layout (high or low range)
• Splitter pre-selection on lever (slow and fast speeds)
• Splitter insertion with depression of clutch pedal
• Servo-shift (gear insertion via pneumatic system)
• PTO with possible rear installation or between clutch and gearbox
• Intarder

ZF AsTronic automatic gearbox

ZF AsTronic automatic gearbox, ideal for less demanding quarry and mining missions.

• 16AS 2630 TO
• Single disc dry clutch with electro-pneumatic control (clutch pedal eliminated)
• 16 FORWARD and 2 REVERSE gears
• 2 operating modes:
• Automatic
• Semi-automatic
• Push-button selector
• PTO with possible rear installation or between clutch and gearbox
• Intarder

ALLISON HD 4700 series automatic gearbox

ALLISON HD 4700 series automatic gearbox, ideal for extremely demanding quarry & mining missions, firefighting e situations requiring superior acceleration or frequent Stop&Go.

• Converter with lock-up on all gears except 1st. Optimisation of shifting and consumption on demanding terrains.
• 7 FORWARD and 1 REVERSE gear
• Limitation of maximum gear that can be inserted (engine protection)
• Integrated retarder
• Lever selector
• Power/eco MODE button

ZF Transmatic hydromechanical gearbox

ZF Transmatic hydromechanical gearbox, multiplies torque at launching, ideal for heavy haulage missions and dangerous towing operations at low speed.

• Lock-up clutch
• WSK TORQUE CONVERTER available on versions 6×4, 6×6, 8×6 and 8×8 (OPTIONAL for Euro III vehicles)
• Integrated retarder
• Single disc dry clutch with pedal control
• 16 FORWARD and 2 REVERSE gears
• Gear shift lever with double H layout (high or low range)
• Splitter pre-selection on lever (slow and fast speeds)
• Splitter insertion with depression of clutch pedal
• Servo-shift (gear insertion via pneumatic system)

• Single disc dry clutch (STD)
• Ceramic single disc clutch
• Pedal control with hydraulic circuit
• Servo clutch on pedal assembly
• Servo clutch on cylinder (hydromechanical only)

• 3-4-axle with all-wheel drive and max. width of 2.9 m.

• Front approach angles > 25° with high ground clearance depending on the configuration and tyres.

• Transverse and longitudinal differential locks to ensure maximum performance even in dangerous off-road conditions.

Availability of high-performance transfer boxes for vehicles travelling with rear-wheel drive and which, when the mission requires, can also engage front-wheel drive:

• ZF-STEYR VG 2700 (up to 30 kNm)

POWER TAKE OFF

Option to install up to 3 PTOs, from those available (on engine, between clutch and gearbox, on gearbox and on transmission).

Provided with standard tyres, 14.00 R20 or 325/95 R24. Availability, on request, of further types of tyre and tread, subject to approval by the Technical Office.

The inside of the cab is specifically designed and optimised to guarantee excellent ergonomics and comfort, making driving relaxing whilst ensuring high functionality. The instrument panel surrounds the driver and makes controls easy and safe to use even in the most difficult and challenging working conditions.

Availability of a sleeper cab with single or double bunk.

Optimal visibility thanks to the windows positioned on the lower part of the doors.

Donaldson two stage filter, ideal for more dusty or sandy environments.

• Extra long wheelbases for unique configurations
• Specific tyres for deserts
• Cab and engine heating systems for particularly cold climates (down to – 50 °C).

Additional cooling systems for engine and gearbox