KOMATSU D21P-5 Dozer for Sale
The KOMATSU D21P-5 crawler dozer is a compact, low-ground-pressure dozer with precise control and long-term durability. Despite being an older version, it is still in demand for its reliable performance, lower operating costs, and compact design. Join us for valuable insights on the KOMATSU D21P-5 dozer for sale: a complete […] The post KOMATSU D21P-5 Dozer for Sale appeared first on Used Equipment.
machineryasia 
The KOMATSU D21P-5 crawler dozer is a compact, low-ground-pressure dozer with precise control and long-term durability. Despite being an older version, it is still in demand for its reliable performance, lower operating costs, and compact design. Join us for valuable insights on the KOMATSU D21P-5 dozer for sale: a complete buyer’s guide.
- Listing: KOMATSU D21P-5 Dozer for Sale
If you are searching for a powerful dozer with stable mobility and affordability, contact Mico Cranes and Equipment in TX to purchase a good-working-order D21P-5. It can be used for land clearance, surface grading, and earthmoving in confined spaces. This comprehensive buyer’s guide will help you understand everything you need to know about the D21P-5 dozer.
Overview of KOMATSU D21P-5 Crawler Dozer
Within Komatsu’s dozer lineup, it falls into the small size category, offering reliable pushing power, stable movement, and lower fuel/maintenance costs. It is a perfect crawler dozer for urban projects or job sites where large machines are too tricky to maneuver. Moreover, with its lower ground pressure, it can work efficiently on soft or sensitive ground. It is ideal for:
- Small-scale construction and land preparation.
- Leveling ground for landscaping.
- Agriculture and forestry operations.
- Utility work trenching, backfilling, and roadside repairs.
It can deliver consistent performance across various terrains, thanks to its powerful engine and minimal soil disturbance compared to a larger dozer.
Full Technical Specifications of Komatsu D21P-5
Before purchasing a previously owned Komatsu D21P-5 for sale in Houston, Texas. Investigate your project requirements and align them with the selected model to ensure this investment is secure and long-lasting. Here, we give general technical features of D21P-5 for the readers’ understanding.
- Engine and Powertrain
The KOMATSU equipped this compact dozer with a fuel-efficient Komatsu 4D94E diesel engine that can generate high torque at low RPM. This low-end torque and 40 HP (29.8 kW) power are essential for smooth grading and consistent pushing.
The powertrain system is supported with a Komatsu hydrostatic transmission. It provides variable speed control and multidirectional mobility for precise results. Compact engine and hydrostatic drive systems reduce fuel consumption and make daylong operations economical. This perfect combo needs less maintenance for reliable performance.
- Undercarriage and Tracks
The undercarriage is the crucial part that gives stable mobility and flotation on soft or uneven terrains. It is a wide-track shoe with a low-ground-pressure (LGP) design, which helps navigate wet, slippery, and harsh surfaces smoothly. The minimal foot impression does not compromise the land and wide-track structure, preventing the machine from sinking.
This compact design factor enables taking short turns in tight spaces, narrow construction zones, barns, and orchards. Moreover, its smooth navigations reduce operator fatigue and deliver big-machine performance.
- Blade and Hydraulics
The KOMATSU D21P-5 features a standard blade approximately 7 ft (around 2.1 m) wide. It is hydraulically controlled to offer precise blade movements. The wide blade, with a highly responsive control system, handles light to medium pushing, grading, and earthmoving operations.
The hydrostatic drive system improves operator control over blade angle and tilt for fine grading and quick adjustments. The used Komatsu D21P-5 for sale offers better modulation than gear-drive models. Easy-to-control joysticks are ideal for landscaping operations where precision matters.
- Dimensions and Operating Weight
One of the attractive features of KOMATSU D21P-5 is its small overall profile, which makes it suitable for confined working spaces where large-sized dozers cannot operate. Municipal utility workers can easily complete trenching and tunneling for sewage or electrical conduits.
Its lower overall operating weight of 8,000–9,000 lbs makes it suitable for farms, ranches, and forestry projects to reduce ground disturbance. Also, make transportation easier with standard equipment trailers rather than heavy-duty lowboys.
- Operator Comfort and Controls
Komatsu designed the D21P-5 for maximum operator comfort and safety. The small engine size and hood height provide excellent forward visibility that is helpful for fine grading operations.
Cab with ergonomic control placement and ROPS canopy options ensure comfortable, confident operation. This close visibility of blade edges and ground surface provides precise results. The hydrostatic-responsive steering and brake control reduce workplace hazards and enhance overall safety.
What are the Operational Benefits of D21P-5
The Komatsu D21P-5 crawler dozer is more reliable compared to other available options. Therefore, its market demand remains higher than that of different models. A fleet manager can yield high productivity targets from this compact dozer under low operational expense. Join us to review the leading factors why professionals prefer it.
- Low Ground Pressure for Soft Terrain
The wide track evenly distributes the machine’s weight for smooth traction. The low-ground-pressure (LGP) undercarriage enables navigation through soft terrain without the risk of the machine sinking. Thus, for landscaping, restorations, and sensitive zones operations, experts prefer this D21P-5.
- Exceptional Maneuverability in Tight Spaces
Another reason this dozer remains the most sought-after even after decades of use is its excellent maneuverability. The small chassis dimensions with the hydrostatic steering system enable dealing with restricted job sites, such as:
- Real estate projects.
- Driveway maintenance.
- Farmlands’ temporary pathways.
- City utility lines installations
The short dozer turning radius, combined with hydraulically powered blade movements, is essential for operating in limited-space zones with strict regulations.
- Easy Maintenance and Low Ownership Cost
Komatsu designed this crawler dozer to facilitate small construction companies with an affordable option. It has simple mechanics, durable structures, and cost-efficient maintenance. The ease of access to oil and filter replacement points, along with the low prices of parts, reduces operational expenses.
Fewer electronics and sensors reduce the risk of malfunctions and costly repairs. Thus, the D21P-5 is a wise investment for small businesses with financial constraints. The Komatsu 4D94E engine is the most reliable for generating optimal torque with minimal fuel consumption. Its simplicity and fewer daily expenses are the prime selling points.
- Strong Resale Value
In fact, market demand for used construction equipment for sale is driven by its durability, ease of repair, and availability of spare parts. This Komatsu dozer is most sought after for its track record of reliability and simple maintenance.
- Long-lasting engine strength
- Useful for different terrains
- Low operating cost
- Easy access to genuine parts
- Great for Small Contractors
Its compact size, precise control, and low operating cost make it suitable for household use and small construction activities. Moreover, land developers and real estate companies can use it for site preparation and road maintenance.
Real-World Applications of KOMATSU D21P-5
This all-purpose, versatile crawler dozer can handle light-to-medium earthmoving projects. Its stable mobility, precise results, and affordable costs make it ideal for a wide range of industries and job types. Here, we list its real-world applications to demonstrate its adaptability.
- Land Clearing and Site Preparation
The powerful dozer blades are used to clear the land and begin construction. The smooth maneuverability and efficient blade of D21P-5 remove unwanted vegetation and obstacles for small to mid-size land-clearing projects. A small construction company can prepare building pads for residential houses and develop access roads.
- Grading and Landscaping
For landscaping projects, a professional requires fine surface grading, which is possible with D21P-5 smooth hydrostatic controls and improved blade visibility. Its blade can be used for ground contouring, driveway grading, and foundation development.
- Agriculture and Farm Use
Farmers and agricultural operators prefer this Komatsu dozer for less soil surface disturbance and economical fuel combustion. Clean livestock areas, irrigation channels, and crop fields; transport manure; and maintain farm roads.
- Roadside Maintenance
Its compact design and LGP tracks enable handling small portions of road or sideways maintenance. Professionals deployed it to repair road shoulders and ditches and push loose soil. It can navigate over soft or wet terrains and clean ditches after rainfall.
- Utility Trench Backfilling
Utility contractors frequently use Komatsu D21P-5 for trenching of water, sewer, or electrical pipelines over narrow corridors. Backfilling trenches with loose soil and gravel after pipeline installation. The municipal management authorities perform operations without disturbing nearby infrastructure.
- Forestry and Ranch Use
It’s flotation on soft cattle ranches and forestry operations. The experts use D21P-5 with a low ground pressure design for cleaning trails, brush, and logging. They reshape pastures and manage gravel roads in remote areas.
Comparison of KOMATSU D21P-5 vs Other Models
For buyers, a comparative analysis of the key features of the Komatsu D21P-5 with available market models, such as the D21A and D31, is essential. Here, we highlight the key differences in its operating weight, engine support, and measuring performance parameters.
D21P-5 vs D21A
The Komatsu D21A is similar to the D21P-5 in some features. However, below we list the key advantages of D21P-5 to help you better understand and make a more informed purchasing decision.
| Specification | D21P-5 | D21A | Major Difference of D21P-5 |
| Engine Power | 40 HP (4D94E) | 45 HP | Some more powerful pushing and grading with the same operational cost. |
| Operating Weight | 8,000–9,000 lbs | 9,500–10,500 lbs | Less ground disturbance and stable movement over soft terrains. |
| Ground Pressure | Low | Higher | D21P-5 is designed for a lower weight-to-volume ratio. |
| Maneuverability | Superior | Moderate | Excel to outperform in crowded areas with sensitive surfaces. |
| Use | Small-scale operations. | Mid-size heavier grading | Better application for low-cost projects with reliable performance. |
The D21P-5 is the go-to crawler dozer with a small footprint and optimal efficiency. On the other hand, the D21A is better for heavy-duty, long-working-hour operations.
D21P-5 vs D31 Models
D31 is a more powerful, larger-scale Komatsu dozer with advanced features. The simple mechanics, fewer maintenance needs, and reliable outputs of the D21P-5 excel those of all other comparative variants.
| Specification | D21P-5 | D31 | Major Difference of D21P-5 |
| Engine Power | 40 HP | 70–80 HP | A more powerful engine needs high fuel consumption and idling, even for small-scale operations. |
| Operating Weight | 8,000–9,000 lbs | 17,000–20,000 lbs | Heavyweight machines suck on wet, slippery terrain. |
| Ground Pressure | Low | Moderate to High | D31 is suitable for hard soil that can tolerate a heavy-weight crawler dozer. |
| Blade Options | Standard size S and U blades with different positioning. | Large-sized dozer blades. | Large blades put strain on the D21P-5 engine. |
| Maneuverability | Excellent in urban settings with limited space. | Stuck in a limited working area. | Suitable to perform pushing, pulling, and grading over confined areas. |
| Use | Small landscaping and city utility work | Large-scale earthmoving and construction sites | For a small operation, a compact machine is suitable for lower operational costs and smooth mobility. |
D31 offers the outstanding raw power required for extensive grading and land clearance. However, D21P-5 outperforms small-to-medium projects with precise controls.
Buying Checklist for a Used KOMATSU D21P-5
Purchasing a previously owned KOMATSU D21P-5 is a strategic move to have reliable crawler dozer performance at a low initial cost. This comprehensive check is designed to secure your investment in the used crawler dozer for sale in Houston, TX.
- Engine Health Checks
A powerful engine is essential to operate for extended hours without overheating. Inspect the following:
| Blow-by | Check the engine exhaust for excessive smoke; that is not good. |
| Smoke color | Blue smoke indicates metallic contamination, black smoke indicates over-fueling, and white smoke indicates coolant issues. |
| Idle stability | The engine should maintain optimal RPM without stalling and surging. |
| Oil leaks | Signs of oil spilling around seals and hoses. |
- Undercarriage Inspection
Structural defects in the chassis can be costly to repair and pose occupational hazards.
| Track shoes | Signs of dent or cracks. |
| Rollers and idlers | Missing fittings and improper greasing. |
| Sprockets | Strength of chipping teeth. |
| Bushings and pins | not overly tight or loose. |
- Blade and Hydraulics
The blade is the central component used for pushing, pulling, and grading operations. Check its:
| Hydraulic leaks | Fittings for hydraulic fluid leaks or structural damage |
| Blade drift | While dropping the blade, it should not drift. |
| Control response | Precise control over angling and tilting. |
| Blade edges | Not broken, bent sections. |
- Hours and Usage Patterns
Machine hours provide an overview of its past handling and maintenance practices and help define its remaining lifespan.
| Average lifespan | Well-maintained D21P-5 performs reliably for 8,000–12,000 hours. |
| Good hours | An optimal working condition unit falls between 4,000 and 6,000 hours. |
- Frame, Welds, and Structural Integrity
Structural damage impacts the crawler dozer’s overall efficiency and reliability.
| Frame inspection | Crack or bend near the blade mounts and the track area. |
| Welds | Signs of poor repairs are evident in the welding joints. |
| Fatigue points | Blade brackets, the undercarriage section, and arm joints are weak areas that require careful inspection. |
- Documentation and Service Records
Proper records of previous maintenance provide the buyer with peace of mind and increase the property’s resale value.
| Maintenance logs | Check the past service intervals for engine, transmission, and hydraulics. |
| Repair history | No major repairs from unauthorized personnel are accepted. |
| Ownership history | The paperwork and the machine’s original serial number should match. |
| Inspection reports | Certified units from approved resources add credibility. |
The following checklist will help you select second-hand KOMATSU D21P-5 dozers for sale that deliver maximum ROI and long-term durability.
Pricing Insights: What to Expect in the Current Market
The initial asking price of D21P-5 depends on its year of launching, usage hours, and actual condition. Here, we give a rough estimation of the current market value of this model. D21P-5 with fewer hours is available for US$10,000 to $50,000, with significant wear and uncertain maintenance.
| Factors That Increase Value | Factors That Decrease Value |
| Low meter hour reading | High meter hour reading |
| Well-documented maintenance | Worn undercarriage parts |
| Good undercarriage condition | Weak Hydraulic or cracks on the blade |
| Responsive hydraulics and blade | Engine blow-by problem, unstable idle, excessive smoke |
| Original parts without significant damage | Structural cracks on the chassis with past repairs, weld |
| Desirable track and safety features | Poor service history |
Attachments and Optional Features to Improve D21P-5 Efficiency
One of the key reasons to keep this old model dozer in demand is its compatibility with a variety of attachments. Komatsu D21P-5 supports advanced modifications and upgrades to enhance its work efficiency. This flexibility enables the user to customize the dozer to their changing needs and operational efficiency.
Different Blade Types
- Straight Blade (S-Blade): Perfect for mild cutting, pushing, and fine surface finishing.
- Universal Blade (U-Blade): Ideal for effectively moving greater amounts of loose dirt or soil.
- Angle Blade: Enables sideways lifting of loads to contour uneven surfaces.
- Combination Blades: For improved grading, specific equipment may have a rotating blade.
Winches
Winches can be used for emergency rescue, mining, and forestry. It increases dozer adaptability, particularly in agricultural applications. It helps drag logs, remove fallen trees, or pull out stuck machines.
Rippers
Consolidated soil, clay, or rocky terrain can be broken up using back-mounted rippers, which improve the D21P-5’s capacity to handle more difficult ground conditions without the need for heavier machinery. Especially useful for relatively small construction projects, grassland improvement, and site preparation.
Canopy / Cab Upgrades
The insulated cab or ROPS covering choices offer operator convenience and security. Moreover, climate-control features with vibration-suppression designs increase operator productivity during extended workdays.
Forestry Screens or Sweeps
In forestry and agricultural practices, some additional shields and guards are used in crucial parts for protection. Increases the lifespan of equipment used in forestry or densely forested areas. Optional hydraulic and radiator protection can be added to minimize downtime.
Lights, Alarms, and Safety Add-Ons
The fleet managers add additional working lights for night shifts and rear-view cameras for safe mobility in crowded spaces. The optional safety features on the Komatsu D21P-5 improve operational safety and the dozer’s longevity.
D21P-5 Maintenance Guide for Long-Term Reliability
Regular maintenance of heavy-duty machinery is essential to get maximum return on investment. Even if a brand-new crawler dozer is not serviced correctly according to the manufacturer’s specified intervals and specifications, its efficiency will be compromised.
- Routine Service Intervals
Daily Checks: Verify the proper level and quality of engine oil, coolant, and hydraulic fluid.
Every 250 Hours: Replace oil and filters, lubricate all moving parts, and check track tension.
Every 500 Hours: Conduct SOS sampling and testing of dozers’ oil and fluids to identify hidden issues at an early stage.
Annual/1,000 Hours: Perform a comprehensive inspection of all vital systems and structural parts.
- Seasonal Maintenance Practices
Seasonal adjustments are essential to keep the D21P-5 in optimal condition year-round. Moreover, preventive care reduces the chances of malfunctioning and downtime.
Winter: To control freezing issues, regularly inspect the coolant condition, battery voltage, and charging concerns.
Summer: Ensure the cooling system is dust-free, and all vents are clear to avoid overheating.
Rainy Seasons: With high moisture content, the risk of machine rusting and water mixing with the fuel increases. Lubricate the exposed parts and clean the combustion chamber periodically.
- Tips to Extend Lifespan
- Develop a preventive maintenance and servicing plan and strictly implement it.
- Follow the Komatsu load chart and remain within safe limits.
- For length storage, remove the battery and empty the fuel tank.
- Train workers on safe handling practices to keep the dozer well-performing for a long time.
- Carefully document and maintain the service log to have good resale value.
Used Komatsu Dozer Near Me
The KOMATSU D21P-5 Dozer is the ideal crawler dozer for small-scale operations. Its compact size, powerful engine, and low ground pressure make it in high demand, even in used condition. Contact Mico Cranes and Equipment in TX if you are a contractor, farmer, or small business owner looking to purchase a crawler dozer at an affordable price.
FAQs
Q 1. Is the D21P-5 suitable for beginner operators?
Yes, Komatsu designed this crawler dozer with simple mechanics and electronic controls. The design’s simplicity makes it user-friendly and economical to operate. Moreover, the hydraulically operated blade provides precise control and reduces the risk of mishaps.
Q 2. How many hours on the meter is a red flag for D21P-5 Dozer?
The manufacturer-defined limits are between 8,000 and 12,000 hours. However, it is recommended to select a unit with 4,000–6,000 hours, which offers a better return. A dozer with more than 7,000 hours requires a professional and in-depth inspection before making any decision.
Q 3. Is the D21P-5 dozer as fuel-efficient as newer models?
Yes. The Komatsu D21P-5 features a fuel-efficient engine and a hydrostatic transmission. This perfect combo reliably manages fuel combustion within the optimal range. However, the latest models are more advanced in terms of air emissions. D21P-5 offers low operating expenses thanks to its simple design and reduced service requirements.
The post KOMATSU D21P-5 Dozer for Sale appeared first on Used Equipment.
