Overview of the Komatsu D21A-5
The Komatsu D21A-5 is a compact crawler dozer that stands out in the construction and earthmoving industry. Known for its robust performance and versatility, this machine is designed to tackle a variety of tasks, from grading and leveling to site preparation and landscaping. With its powerful engine and efficient hydraulic system, the D21A-5 is a reliable workhorse that can handle tough jobs with ease.
Key Specifications
Here’s a quick look at some of the essential specifications of the D21A-5:
| Specification | Details |
|---|---|
| Engine Power | 36.5 kW (49 HP) |
| Operating Weight | 4,900 kg (10,800 lbs) |
| Blade Width | 1,800 mm (71 in) |
| Overall Length | 3,045 mm (120 in) |
| Overall Width | 1,800 mm (71 in) |
| Overall Height | 2,550 mm (100 in) |
Performance and Efficiency
When it comes to performance, the D21A-5 doesn’t disappoint. It is equipped with a powerful engine that delivers impressive torque, allowing it to push through tough materials without breaking a sweat. The hydraulic system is designed for efficiency, ensuring that every movement is smooth and controlled. Here are some key performance features:
- High Traction: The dozer’s tracks provide excellent grip, making it suitable for various terrains, including muddy and uneven surfaces.
- Versatile Blade Options: The D21A-5 can be fitted with different blade types, such as straight or angle blades, to suit specific job requirements.
- Compact Design: Its smaller size allows for easy maneuverability in tight spaces, making it ideal for urban construction sites.
Operator Comfort and Control
One of the standout features of the D21A-5 is its operator-friendly design. The cabin is spacious and ergonomically designed, providing a comfortable working environment. Key aspects include:
- Adjustable Seat: The operator’s seat can be adjusted for optimal comfort, reducing fatigue during long hours of operation.
- Intuitive Controls: The control layout is straightforward, allowing operators to quickly become familiar with the machine’s functions.
- Visibility: Large windows provide excellent visibility, enhancing safety and precision during operation.
Maintenance and Durability
Durability is a critical factor for any piece of heavy machinery, and the D21A-5 is built to last. Regular maintenance is straightforward, thanks to easily accessible components. Key maintenance features include:
- Easy Access Points: Maintenance points are strategically located for quick checks and servicing.
- Robust Construction: The dozer’s frame and components are designed to withstand harsh working conditions.
- Service Interval Alerts: The machine is equipped with alerts for regular service intervals, helping to keep it in top shape.
In summary, the Komatsu D21A-5 is a powerful and efficient crawler dozer that excels in various applications. Its combination of performance, operator comfort, and ease of maintenance makes it a valuable asset for any construction fleet. Whether you’re grading a site or pushing material, this machine is built to get the job done.
Performance and Versatility of the D21A-5
The Komatsu D21A-5 is more than just a compact crawler dozer; it’s a versatile machine that can adapt to a wide range of tasks on the job site. Whether you’re moving earth, grading, or preparing a site for construction, this dozer is built to handle it all.
Adaptability to Various Applications
One of the standout features of the D21A-5 is its ability to perform in different environments and applications. Here’s how it excels:
- Grading: The dozer’s blade can be adjusted for different angles, allowing for precise grading on uneven surfaces.
- Site Preparation: Its compact size and powerful engine make it ideal for clearing and preparing sites in urban areas where space is limited.
- Landscaping: The D21A-5 is perfect for landscaping projects, as it can easily maneuver around tight corners and obstacles.
Operator Experience
When it comes to operating heavy machinery, comfort and control are paramount. The D21A-5 is designed with the operator in mind, ensuring that they can work efficiently without unnecessary strain.
- Ergonomic Cabin: The cabin is spacious and features an adjustable seat, allowing operators to find their ideal position.
- Visibility: Large windows and a well-designed layout provide excellent visibility, which is crucial for safety and precision.
- Control Layout: The intuitive controls make it easy for operators to perform tasks without fumbling, enhancing productivity.
Fuel Efficiency and Cost-Effectiveness
In today’s economy, fuel efficiency is a significant concern for equipment owners. The D21A-5 stands out in this area as well.
- Engine Performance: The dozer is equipped with a highly efficient engine that balances power and fuel consumption, making it a cost-effective choice for long-term use.
- Reduced Operating Costs: With its reliable performance and low fuel consumption, the D21A-5 helps keep operating costs down, allowing for better profit margins on projects.
Maintenance and Longevity
A machine is only as good as its upkeep, and the D21A-5 is designed for easy maintenance.
- Accessible Maintenance Points: Key components are easily accessible, making routine checks and servicing straightforward.
- Durable Construction: Built with high-quality materials, the D21A-5 is designed to withstand the rigors of heavy use.
- Service Alerts: The integrated service alert system notifies operators when maintenance is due, helping to prolong the machine’s lifespan.
Pros and Cons of the D21A-5
To give you a clearer picture, here’s a breakdown of the pros and cons of the Komatsu D21A-5:
| Pros | Cons |
|---|---|
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In summary, the Komatsu D21A-5 is a versatile and efficient crawler dozer that meets the demands of various job sites. Its combination of operator comfort, fuel efficiency, and ease of maintenance makes it a solid choice for both contractors and equipment owners. Whether you’re a seasoned operator or new to heavy machinery, the D21A-5 is designed to deliver reliable performance day in and day out.
