FORCETALLY
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Measured figures
Configuration
| Specification | Caterpillar D4 | Keiler (mine flail) |
|---|---|---|
| Manufacturer | Caterpillar Inc.[source] | Rheinmetall[source] |
| Type | small bulldozer[source] | Mine flail[source] |
| Introduction | Caterpillar first introduced the RD4 in 1936[source]RD4 predecessor only, not modern D4 variants | — |
| Powerplant | D315 engine[source]Historical D4U series only | — |
| Gauge | 6U = Narrow gauge 44 in (1,100 mm) |
Width
Single source6.35 m (20 ft 10 in)[source]
Maximum; Maximum speed
Single source50 km/h (31 mph)[source]
Operational; Operational range
Single source600 km (370 mi)[source]
MTU MB 871 Ka
Single sourceMTU MB 871 Ka 501 986 hp[source]
Bars compare reported quantities only. A larger figure does not make a system better; configurations and test conditions differ.
7U = Wide Gauge 60 in (1,500 mm)[source]7U only
| — |
| Variants | Caterpillar D4C - 1959-63 Caterpillar D4D - 1963-77 Caterpillar D4E - 1977-84 Caterpillar D4H - 1985-96 Caterpillar D4C SII -1990-93 Caterpillar D4C SIII - 1993[source]Production/version history; never service-ending intervals | — |
|---|
| Country of origin | United States[source]Inventory Origin column; table 7, row 11, cell 5; revision 1368748817; retrieved 2026-09-30 | — |
|---|
| Place of origin | — | Germany[source] |
|---|
| Produced | — | 1997-1998[source] |
|---|
| Suspension | — | torsion-bar[source] |
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| Designed | — | 2024[source] |
|---|
| Secondary armament | — | Rheinmetall Natter 12.7 RCWS[source] |
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| Main armament | — | keine[source] |
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| Reported operators | — |
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