SPECS / COMPARISON
Caterpillar D3B vs Komatsu D31A-17
A detailed comparison of the Caterpillar D3B and the Komatsu D31A-17. Click a model name to view its full specifications.
Horsepower
Caterpillar D3B48.5 kW (65 HP)
Komatsu D31A-1749.2 kW (66 HP)
Operating Weight
Caterpillar D3B6877.0 kg (15161.2 lbs)
Komatsu D31A-175121.1 kg (11290 lbs)
| Specification | Caterpillar D3B Crawler Dozers | Komatsu D31A-17 Crawler Dozers |
|---|---|---|
| Type | Crawler Dozer | Crawler Dozer |
| Horsepower | 48.5 kW (65 HP) | 49.2 kW (66 HP) |
| Operating Weight | 6877.0 kg (15161.2 lbs) | 5121.1 kg (11290 lbs) |
| Pump Flow | 55.3 LPM (14.6 GPM) | — |
| Engine Manufacturer | Caterpillar | Komatsu |
| Engine Model | 3204 | 4 D105-5 |
| Net Power | 48.5 kW (65 HP) | — |
| Aspiration | Naturally | — |
| Number of Cylinders | 4 | — |
| Displacement | 5201.3 cc (317.4 cu in.) | 4326.2 cc (264 cu in.) |
| Power Measured RPM | 2400 RPM | — |
| Alternator Supplied Amp. | 40 A | — |
| Alternator | 40 A | — |
| Battery | 12 V | — |
| Transmission Type | Planetary powershift | Planetary Gear |
| Number of Forward Gears | 3 | 3 |
| Number of Reverse Gears | 3 | 3 |
| Max Speed Forward | 10.6 km/h (6.6 mph) | 6.6 km/h (4.1 mph) |
| Max Speed Reverse | 11.4 km/h (7.1 mph) | 7.2 km/h (4.5 mph) |
| Fuel Capacity | 114.3 l (30.2 gal) | 115.1 l (30.4 gal) |
| Engine Oil Capacity | 12.1 l (3.2 gal) | — |
| Cooling System Capacity | 20.1 l (5.3 gal) | 22.3 l (5.9 gal) |
| Hydraulic Capacity | 70.0 l (18.5 gal) | — |
| Final Drives Capacity | 8.3 l (2.2 gal) | — |
| Hydraulic Pump Flow | 55.3 LPM (14.6 GPM) | — |
| Relief Valve Pressure | 172.4 bar (2500 psi) | — |
| Cab Height | 268.2 cm (105.6 in.) | 271.3 cm (106.8 in.) |
| Width Over Track | 179.8 cm (70.8 in.) | 185.9 cm (73.2 in.) |
| Length Overall | 368.8 cm (145.2 in.) | — |
| Length without Blade | 277.4 cm (109.2 in.) | 286.5 cm (112.8 in.) |
| Length of Track on Ground | 182.9 cm (72.0 in.) | 189.0 cm (74.4 in.) |
| Track Gauge | 143.3 cm (56.4 in.) | 146.3 cm (57.6 in.) |
| Ground Clearance | 33.5 cm (13.2 in.) | — |
| Ground Contact Area | 28195.6 cm³ (1720.6 cu in.) | — |
| No of Shoes Per Side | 36 | — |
| No of Track Rollers Per Side | 5 | 5 |
| Shoe Size | 30.5 cm (12 in.) | 33.0 cm (13 in.) |
| Weight (Operating) | 6877.0 kg (15161.2 lbs) | 5121.1 kg (11290 lbs) |
| Gross Power | — | 49.2 kW (66 HP) |
| Ground Pressure | — | 0.4 bar (5.9 psi) |
Values come from the manufacturer-sourced model files; empty cells mean the property is not published for that model. No performance ranking is applied.