- Category: Crawler Dozers ➔
- Manufacturer: Komatsu ➔
- Model: D21A-8 ➔
The Komatsu D21A-8 Crawler Dozer is a compact and powerful machine designed for efficiency and productivity in a variety of job sites. With a gross power of 43.1 hp and an operating weight of 8690 lbs, this dozer offers excellent maneuverability and performance. Its standard blade dimensions, transmission capabilities, and undercarriage specifications make it a versatile and reliable choice for tackling tough earthmoving tasks.
Dimensions
| Height - Top of Cab | 8 ft (2 m)
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| Length w/ Blade | 11 ft (3 m)
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| Width Over Tracks | 4 ft (1 m)
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Engine
| Aspiration | naturally aspirated
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| Displacement | 186 cu in (3,048 cu cm)
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| Engine Model | 4D94LE-2
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| Gross Power | 43 hp (32 kw)
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| Make | Komatsu
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| Net Power | 40 hp (30 kw)
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| Number of Cylinders | 4
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Operating Specifications
| Cooling System Fluid Capacity | 3 gal (10 l)
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| Engine Oil Capacity | 2 gal (6 l)
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| Final Drives Fluid Capacity | 2 gal (6 l)
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| Fuel Capacity | 16 gal (60 l)
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| Hydraulic Fluid Capacity | 6 gal (21 l)
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| Operating Weight | 8,690 lbs (3,942 kg)
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Standard Blade
| Blade Angle (both directions) | 25 degrees
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| Height | 3 in (7 cm)
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| Width | 7 ft (2 m)
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Transmission
| Max Speed - Forward | 3 mph (4 kph)
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| Max Speed - Reverse | 4 mph (6 kph)
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| Number of Forward Gears | 2
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| Number of Reverse Gears | 2
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| Transmission Type | Komatsu HYDROSHIFT transmission
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Undercarriage
| Ground Contact Area | 1,570 cu in (25,728 cu cm)
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| Ground Pressure | 4.8 psi
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| Number of Shoes per Side | 37
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| Number of Track Rollers per Side | 5
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| Standard Shoe Size | 12 in (30 cm)
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