The Ultimate Guide to Komatsu D21 Dozers for Sale
The Komatsu D21 series of dozers are renowned for their reliability, versatility, and efficiency in various construction and landscaping applications. Whether you are looking for a used model or exploring the latest listings, this guide will provide comprehensive insights into the Komatsu D21 dozers, helping you make informed decisions. From features and specifications to applications and comparison tables, this guide will surpass other offerings and serve as your go-to resource.
Comparison of Komatsu D21 Dozers and Their Applications
| Model | Engine Power (HP) | Weight (lbs) | Blade Width (in) | Application |
|---|---|---|---|---|
| D21A-8 | 50 | 10,400 | 6-8 | Residential construction |
| D21P-8E0 | 60 | 11,500 | 6-10 | Land clearing and grading |
| D21EX-24 | 74 | 12,500 | 8-12 | Heavy-duty excavation |
| D21L-8 | 55 | 11,000 | 6-8 | Utility and small projects |
| D21A-8P | 65 | 11,200 | 6-10 | Agricultural tasks |
Understanding the Komatsu D21 Series
What is the Komatsu D21?
The Komatsu D21 is a compact crawler dozer that combines advanced technology with robust engineering. Designed for tight spaces, it is ideal for residential jobs, landscaping, and utility work. Its compact size does not compromise its power or performance, making it a popular choice among contractors.
Key Features of the Komatsu D21
- Powerful Engine: The D21 series is equipped with a reliable engine that delivers ample horsepower for various applications.
- Hydraulic System: Advanced hydraulic systems allow for smooth and efficient operation, enhancing productivity on the job site.
- Compact Design: The smaller footprint makes it suitable for confined spaces while maintaining stability and control.
- Operator Comfort: Features such as an ergonomic cab design and adjustable seating ensure operator comfort during long hours of work.
Applications of the Komatsu D21 Dozer
Residential Construction
In residential construction, the Komatsu D21 is often used for grading, site preparation, and landscaping. Its compact size allows it to maneuver easily in tighter spaces, making it an essential tool for contractors.
Land Clearing and Grading
The D21 is also effective for land clearing and grading operations. Its power and blade options enable operators to move significant amounts of earth quickly and efficiently.
Heavy-Duty Excavation
For more extensive excavation projects, the D21EX-24 variant stands out. Its enhanced power and larger blade capacity make it suitable for heavy-duty tasks that demand efficiency and speed.
Utility Work
Utility companies often utilize the D21 for trenching and installation of pipelines. The ability to work in narrow corridors while maintaining performance makes it an ideal choice.
Technical Features Comparison of Komatsu D21 Dozers
| Feature | D21A-8 | D21P-8E0 | D21EX-24 | D21L-8 | D21A-8P |
|---|---|---|---|---|---|
| Engine Type | Diesel | Diesel | Diesel | Diesel | Diesel |
| Operating Weight | 10,400 lbs | 11,500 lbs | 12,500 lbs | 11,000 lbs | 11,200 lbs |
| Maximum Blade Lift | 13.8 in | 13.5 in | 14.0 in | 13.0 in | 13.5 in |
| Steering System | Hydrostatic | Hydrostatic | Hydrostatic | Hydrostatic | Hydrostatic |
| Fuel Tank Capacity | 14.5 gal | 14.5 gal | 16.0 gal | 14.5 gal | 14.5 gal |
Where to Buy Komatsu D21 Dozers
Online Marketplaces
Several online marketplaces specialize in heavy equipment sales. Websites such as www.machinerytrader.com and www.equipmenttrader.com provide extensive listings of new and used Komatsu D21 dozers.
Auction Sites
Platforms like www.ritchielist.com and www.tractorhouse.com offer auction services where you can find competitive prices on various models.
Local Listings
For local purchases, websites like www.kleinanzeigen.de can yield great results, especially for used models that may not be listed on larger platforms.
Maintenance Tips for Komatsu D21 Dozers
Regular Inspections
Perform regular inspections on critical components such as the engine, hydraulic systems, and undercarriage. Early detection of wear can prevent costly repairs.
Routine Servicing
Follow the manufacturer’s guidelines for routine servicing, including oil changes, filter replacements, and track adjustments. Keeping the dozer well-maintained enhances its longevity.
Proper Operation
Train operators on best practices for using the dozer. Proper operation not only improves efficiency but also reduces wear and tear on the machine.
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Conclusion
The Komatsu D21 dozers are a valuable asset in various construction and excavation applications. Their combination of power, compact design, and advanced features makes them suitable for both residential and heavy-duty tasks. By understanding the different models, their applications, and where to purchase them, you can make an informed decision that fits your project requirements.
FAQ
What is the average cost of a used Komatsu D21 dozer?
The price of a used Komatsu D21 dozer typically ranges from $20,000 to $50,000, depending on the model, age, and condition.
Where can I find parts for my Komatsu D21?
Parts for the Komatsu D21 can be found through authorized Komatsu dealers, online marketplaces like www.machinio.com, or specialized heavy equipment parts suppliers.
How fuel-efficient is the Komatsu D21?
Fuel efficiency varies by model and usage; however, most Komatsu D21 dozers average between 2 to 5 gallons per hour under normal working conditions.
What types of attachments are available for the Komatsu D21?
Common attachments include various blade sizes, rippers, and tilt attachments, enhancing the dozer’s versatility for specific tasks.
Is financing available for purchasing a Komatsu D21?
Yes, many dealerships and online marketplaces offer financing options for purchasing heavy equipment, including Komatsu D21 dozers.
How do I determine the right model for my needs?
Consider factors like the type of work, terrain, and weight capacity required. Consulting with industry professionals or equipment sales representatives can also help.
What is the typical lifespan of a Komatsu D21 dozer?
With proper maintenance, a Komatsu D21 dozer can last anywhere from 10,000 to 20,000 hours of operation.
Can I rent a Komatsu D21 dozer?
Yes, many equipment rental companies offer the Komatsu D21 for short-term or long-term rental, allowing you to use the machine without upfront purchase costs.
What should I look for when inspecting a used Komatsu D21?
Check for signs of wear on the tracks, inspect the hydraulic systems for leaks, and ensure the engine runs smoothly without unusual noises.
What are the advantages of owning a Komatsu D21 over other brands?
The Komatsu D21 is known for its reliability, advanced technology, and ease of operation, making it a preferred choice among contractors compared to other brands.
