ROKBAK RA40 40T Articulated Dump Truck (6x6)

Engine

• Engine Model: Scania DC13
• Type: 6-cylinder, in-line, four-cycle, direct injection diesel, water-cooled, turbocharged with air-to-air charge cooling, electronic engine management, and engine exhaust brake.
• Specifications:
  • Displacement: 12.7 L (775 in³)
  • Bore x Stroke: 130 x 160 mm (5.12 x 6.37 in)
  • Gross Power: 331 kW (444 hp) @ 2,100 rpm
  • Net Power: 328 kW (440 hp) @ 2,100 rpm
  • Max Torque: 2,255 Nm (1,663 lbf-ft) @ 1,300 rpm
• Standards: ISO 3046, compliant with US EPA Tier 4F, EU Stage V, and Tier 2 derivatives.
• Electrical: 24V electric start, 100A alternator, two 12V 180 Ah batteries.
• Air Cleaner: Dry-type 3-stage with safety element and automatic dust ejector.
• Fan: Modulating fan for noise reduction and efficiency.
• Altitude: Electronic derate from 2,000 m (6,561 ft).

Transmission

• Model: Allison HD4560
• Type: Fully automatic with integral retarder, planetary gearing, 6 forward gears, and 1 reverse gear.
• Gear Ratios:
  • Low Speed:
    • Gear 1: 6.0 km/h (3.7 mph)
    • Gear 2: 11.3 km/h (7.0 mph)
    • Gear 3: 16.5 km/h (10.3 mph)
    • Gear 4: 25.6 km/h (16.0 mph)
    • Gear 5: 33.9 km/h (21.0 mph)
    • Gear 6: 41.7 km/h (26.0 mph)
  • High Speed:
    • Gear 1: 9.5 km/h (6.0 mph)
    • Gear 2: 16.0 km/h (10.0 mph)
    • Gear 3: 25.3 km/h (15.7 mph)
    • Gear 4: 39.2 km/h (24.4 mph)
    • Gear 5: 51.9 km/h (32.3 mph)
    • Gear 6: 63.8 km/h (40.0 mph)

Axles

• Type: Permanent all-wheel drive (6x6) with differential coupling between each axle.
• Specifications:
  • Differential Ratio: 3.70:1
  • Planetary Reduction: 6.35:1
  • Overall Drivetrain Reduction: 23.50:1

Suspension

• Front Suspension: Four trailing links with a panhard rod for high roll center and optimized suspension.
• Rear Suspension: Rubber/metal laminated compression units, balanced for equal load, maintenance-free.

Steering

• Type: Hydrostatic power steering with dual-acting steering cylinders.
• Specifications:
  • Steering Angle: 45°
  • System Pressure: 240 bar (3,480 psi)
  • Turning Radius: 9,185 mm (30-1 ft-in)
  • Clearing Radius: 9,675 mm (31-9 ft-in)

Frame

• Type: All-welded high-grade steel with rectangular box-section beams. Articulates 45° for steering.

Body

• Type: All-welded construction, high hardness steel with dual slope tailchute.
• Plate Thickness:
  • Floor/Tailchute: 15.0 mm (0.58 in)
  • Sides: 12.0 mm (0.47 in)
  • Front: 8.0 mm (0.31 in)
• Volume:
  • Struck: 17.4 m³ (22.8 yd³)
  • Heaped: 23.0 m³ (30.3 yd³)

Hoist

• Type: Two single-stage, double-acting hoist cylinders.
• System Pressure: 240 bar (3,480 psi)
• Pump Output Flow Rate: 5.4 L/s (1.43 gal/s)
• Raise Time: 12.5 seconds
• Lower Time: 8 seconds

Tyres and Wheels

• Tyres: Standard 29.5
• Rims: 25x25.00 with 3-piece earthmover rims, 19 stud fixing.

Brakes

• Type: Hydraulic braking system with oil-cooled brake packs, independent circuits for front and rear.
• Parking Brake: Spring-applied, hydraulic-released.
• Secondary Brake: Secondary brake control activates service brake circuits.
• Retarder: Exhaust brake and transmission retarder.

Weights

• Gross Distribution:
  • Front Axle: 19,042 kg (41,310 lb)
  • Centre Axle: 56,045 kg (123,525 lb)
  • Rear Axle: 56,184 kg (123,780 lb)
  • Vehicle Gross: 153,548 kg (338,615 lb)

Capacities

• Fuel Tank: 500 L (132 US gal)
• Hydraulic System: 341 L (90 US gal)
• Engine Crankcase: 45 L (11.8 US gal)
• Cooling System: 70 L (18.5 US gal)
• Transmission: 48 L (12.7 US gal)
• Differentials (Front & Rear): 38 L (10 US gal)

Ground Pressure

• Tyres: 29.5 R25
• Loaded Pressure:
  • Front: 372 kPa (54 psi)
  • Rear: 469 kPa (68 psi)

Sound Levels

• In-cab Sound Level: 70 dB(A)
• External Sound Level: 109 dB(A)

Standard Equipment

• Cab and Operator: Air conditioning, adjustable seats, HVAC, tinted glass, HEPA filter.
• Warning Lights and Audible Alarm: Indicators for engine, brakes, dropbox, oil pressure.
• General: Articulation and oscillation lock, battery master switch, hydraulic filter restriction indicator.
• Gauges: Fuel level, brake oil temperature, DEF level warning, tachometer.
• Lights: Front working lights, hazard indicators, halogen headlamps.

Optional Equipment

• Body Options: Side extensions, heated body, liner plates.
• Mirrors: Heated mirrors.
• Lights: Beacon flashing, rear working lights, fog rear.
• Other Options: Automatic lubrication, fast fuel, inclinometer, payload monitoring system.