2025 Komatsu Trucks HD405-8

Information

2025 Komatsu Trucks HD405-8

Maneuverability even in tight spaces

Known for its maneuverability and tight turning radius, the HD405-8 helps you deliver high productivity and offers impressive durability. A fully automatic K-ATOMiCS transmission with lock-up torque converter, a hydro-pneumatic suspension system and oil-cooled multiple-disc brakes makes this the right choice for a variety of jobs.

Features may include:

MacPherson-strut-type suspension
  • A comfortable ride, even on uneven roads. The MacPherson-strut-type independent front suspension allows the front wheels to follow uneven road surfaces smoothly.
Fully hydraulic wet multiple-disc brakes
  • Give your operator greater confidence at higher downhill speeds with wet multiple-disc brakes. Continuously oil-cooled, multiple-disc brakes function as a highly responsive retarder for added reliability and stable brake performance.
Automatic retard speed control
  • Let your operator concentrate more on steering by simply setting the downhill travel speed at increments of 0.6 mph to match the optimum speed for slope. Travel speed is automatically lowere
K-ATOMiCS transmission
  • Komatsu Advanced Transmission with Optimum Modulation Control System (K-ATOMiCS) helps avoid unnecessary fuel consumption, reduce material spillage and provide a smoother ride for operators by automatically selecting a gear position depending on grade, speed and acceleration.
Komatsu Traction Control System (KTCS)
  • KTCS is engineered for optimal traction in soft or wet road conditions with a system that monitors for wheel slippage at the rear axle. If slippage is detected, brakes are applied independently and automatically to each wheel set.

Photos

Highlights

  • Bushnell, Florida
  • 2025
  • Komatsu
  • Trucks HD405-8
  • Full-automatic, planetary type | Speed range: Seven speeds forward and one reverse
  • Available
  • 11 ft. 1 in
  • at full dump: 26 ft. 7 in

Specifications

  • 2025
  • Komatsu
  • Trucks
  • HD405-8
  • General
  • Komatsu SAA6D140E-7
  • SAE J1995: 518 HP | ISO 9249 /SAE J1349: 514 HP
  • 4-cycle
  • Maximum: 1600 Ibs.-ft.
  • Water-cooled
  • Variable geometry, turbo-charged, air-to-air after-cooled, cooled Exhaust Gas Recirculation (EGR)
  • 6
  • 5.5 in
  • 6.5 in
  • Piston: 930 in³
  • Dry type with double elements and precleaner, plus dust indicator
  • Gear pump, force-lubrication
  • EPA Tier 4 Final
  • Direct injection
  • Full-automatic, planetary type | Speed range: Seven speeds forward and one reverse
  • Wet, single-disk clutch
  • Electronically controlled
  • Fully hydraulic power steering with two double-acting cylinder | Supplementary steering: Automatic/manual control (meets ISO 5010, SAE J1511 and SAE J53)
  • Dry type, single disc type full hydraulic / Wet type, multiple disc type, full hydraulic
  • Dry type, single disc type, spring operated, hydraulic releasing type
  • Secondary: Manual pedal operation When hydraulic pressure drops below the rated level, parking brake is automatically actuated
  • 21.00 R33
  • 21.00 R33
  • Hoist time: 10 s
  • 2,000 rpm | Maximum travel speed: 41.0 mph
  • 2,990 psi
  • Material thickness Bottom: 0.75 in | Material thickness Front: 0.55 in | Material thickness Sides: 0.35 in | Front break: 150 in2 | Rear break: 7,881 in2 | Maximum steering angle: 38° | Effective cylinder stroke (front suspension): 9.8 in | Oil stopper: 6.8° | Mechanical stopper: 8.1° | Dumping angle: 48°
  • 25 ft. 11 in
  • 18 ft. 6 in
  • 11 ft. 1 in
  • at full dump: 26 ft. 7 in
  • 26.2 yd3
  • 35.7 yd3
  • Differential: 3.125 | Planetary: 5.211
  • 120.5 US gal
  • DEF tank: 9.2 US gal
  • Engine: 13.2 US gal
  • system: 31.7 US gal
  • Empty: 82,310 lbs.| Standard tire: 170,671 lbs. | Empty: Front axle: 54.2% | Rear axle: 45.8% | Loaded: Front axle: 32.9% | Rear axle: 67.1%