Bulldozer
6 photosKomatsu · Bulldozers
Komatsu D31 Small Bulldozer
The Komatsu D31 has an operating weight of 18,055 lb and a 78 hp engine, with a 2.2 cu yd blade.
Updated October 2026
78 HP18,055 lbsSmall ClassEst. $76,000 – $185,000
How much is a used Komatsu D31 worth?
HeavyDutyYard estimates a used Komatsu D31 at $76,000–$185,000 (our estimate, not yet checked against recent sales).
HeavyDutyYard estimate
$76,000–$185,000
USD
Not yet checked against recent sales. Year, hours and condition decide where a unit lands.
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About the Komatsu D31 Small Bulldozer
The Komatsu D31 Small Bulldozer is a small-class bulldozer.
Owners mostly put it to work on site preparation, light construction, landscaping.
Specifications
Engine & Power
- Engine
- Komatsu SAA6D102E
- Horsepower
- 78 HP
- Fuel Tank
- 51.6 gal
Dimensions & Weight
- Operating Weight
- 18055 lbs
- Blade Width
- 7.4 ft
- Ground Pressure
- 6.7 psi
Configuration
- Size Class
- Small
Weight, power, and capacity figures checked October 2026 against D31PX-22. Older or newer generations of this model may differ.
Common Applications
- Site preparation
- Light construction
- Landscaping
- Small excavation
Popular Attachments
Single shank ripperAngle bladeTilt blade
Common Configurations
Standard trackPX (low ground pressure)EX standardEnclosed cab
How It Compares
| Spec | Komatsu D31 Small Bulldozer | Caterpillar D3 Small Bulldozer | John Deere 450K Crawler Dozer |
|---|---|---|---|
| Engine HP | 78 HP | 104 HP | 80 HP |
| Op. Weight | 18,055 lbs | 20,640 lbs | 18,752 lbs |
| Blade Capacity | 2.2 | 2.86 | 2.1 |
| Est. Price Low | $76,000 | $73,500 | $24,000 |
| Est. Price High | $185,000 | $180,000 | $59,000 |
Against the CAT D3, the Komatsu D31 is 2,585 lb lighter, has 26 less hp and has 0.66 cu yd less blade capacity.
Against the John Deere 450K, the Komatsu D31 is 697 lb lighter, has 2 less hp and has 0.1 cu yd more blade capacity.
Frequently Asked Questions
How much does the Komatsu D31 weigh?
The Komatsu D31 has an operating weight of 18,055 lb and a 78 hp engine. Cab, counterweight, tracks, and attachments can move the real weight of a given unit up or down from this spec figure, so check the serial plate or the OEM spec sheet for the exact build before booking transport.
How much is a used Komatsu D31 worth?
HeavyDutyYard estimates a used Komatsu D31 at $76,000–$185,000 (our estimate, not yet checked against recent sales).
Where can I sell my Komatsu D31?
Send HeavyDutyYard the year, hours, and condition of your Komatsu D31 and we reply within one business day. We make cash offers on some machines; otherwise we list yours free on the HeavyDutyYard marketplace, where we review every listing and screen buyer messages before they reach you. Transport is coordinated when we buy.
What is the Komatsu D31 used for?
The Komatsu D31 Small Bulldozer is commonly used for site preparation, light construction, landscaping, small excavation.