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Komatsu D31A-17 Crawler Dozer Overview
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The Komatsu D31A-17 is a reliable and versatile crawler dozer widely used in construction, landscaping, and agricultural applications. Built for durability and efficiency, it combines powerful engine performance with stable tracked mobility, making it suitable for various earthmoving tasks.
Specifications and Performance
  • Engine Power: Approximately 66 horsepower (48.5 kW) provided by a robust Komatsu diesel engine, balancing fuel economy and power delivery.
  • Operating Weight: Around 11,290 lbs (5,120 kg), offering excellent ground contact and traction while maintaining a manageable size for moderate jobs.
  • Dimensions: Roughly 12 feet 4 inches in length, 8 feet wide, and about 9 feet tall, providing a compact footprint suitable for tight spaces.
  • Undercarriage: Tracked design optimized for uneven, soft, and rugged terrain, providing stability and low ground pressure.
Key Features
  • Blade: Equipped with an 8-foot 4-way blade, allowing versatile earth cutting, pushing, grading, and back dragging.
  • Transmission: Featuring a hydrostatic or power shift transmission depending on model variant, enabling smooth control over speed and direction.
  • Hydraulic System: Strong hydraulic pumps provide consistent power to the blade and undercarriage systems, ensuring responsive handling.
  • Operator Station: Designed with ergonomics in mind, the cab or operator position allows clear visibility and straightforward control layout, enhancing productivity and comfort during long shifts.
Applications
  • Versatile for site preparation tasks such as grading, leveling, road building, and forestry land clearing.
  • Common in smaller construction projects due to its balance of power and manageable size.
  • Used in agriculture for soil preparation, fence line clearing, and driveway maintenance.
Maintenance and Durability
  • Known for dependable build quality, with easily accessible service points reducing downtime during routine maintenance.
  • Tracks and undercarriage components designed for extended wear resistance, with regular inspection recommended to maximize lifespan.
  • Engine and hydraulic components have standardized layouts, simplifying troubleshooting and parts replacement.
Glossary
  • Crawler Dozer: A tracked vehicle with a front blade used for pushing earth materials.
  • 4-Way Blade: A blade that can be angled, tilted, lifted, and angled back for flexible soil management.
  • Hydrostatic Transmission: Uses hydraulic fluid to transfer power smoothly, enhancing speed and torque control.
  • Ground Pressure: The weight distributed over the contact area of the tracks; lower pressure reduces ground damage.
  • Undercarriage: The assembly of tracks, rollers, and sprockets that supports and moves the machine.

The Komatsu D31A-17 stands as a compact, powerful, and efficient crawler dozer tailored for diverse earthmoving tasks. Its solid engine, reliable hydraulics, and robust tracked chassis make it a practical choice for operators seeking a balance between maneuverability and performance in both construction and agricultural settings.
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