
Allis ChalmersModel A
Allis Chalmers HD21
Agricultural
- power
- 225 hp
- displacement
- 844 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Agricultural

Agricultural

Utility
How they compare
HD21 is in the 84th percentile; Bearcat IV KM-225 is in the 84th · 1,028 models
HD21 is in the 96th percentile; Bearcat IV KM-225 is in the 93rd · 1,083 models
HD21 is in the 74th percentile; Bearcat IV KM-225 is in the 74th · 1,130 models
HD21 is in the 1st percentile; Bearcat IV KM-225 is in the 74th · 972 models
Full comparison
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | Steiger | — |
| Model | HD21 | Bearcat IV KM-225 | — |
| Category | Agricultural | Utility | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Manufacturer | Allis-Chalmers | Cummins | — |
| Model | Not recorded | LT-10-A | — |
| Power Output | 225hp | 225hp | Same |
| Rated RPM | 1,800RPM | Not recorded | — |
| Cylinders | 6 | 6 | Same |
| Displacement | 844ci | 611ci | ▲ HD21+233 ci · +38% |
| Bore | 5.3in | 4.9in | ▲ HD21+0.4 in · +8% |
| Stroke | 6.5in | 5.3in | ▲ HD21+1.2 in · +23% |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Type | Torque Converter | Selective gear fixed ratio | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Length | 198in | 254in | ▲ Bearcat IV KM-225+56 in · +28% |
| Width | Not recorded | 96in | — |
| Height | 99in | 156in | ▲ Bearcat IV KM-225+57 in · +58% |
| Operating Weight | 45,500lb | 33,830lb | ▲ HD21+11,670 lb · +34% |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| System Type | Not recorded | Direct engine drive | — |
| Steering Type | Not recorded | Articulated power | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Front Tire Size | Not recorded | 18.4x38 | — |
| Rear Tire Size | Not recorded | 18.4x38 | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Hitch Category | Not recorded | III | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Chassis Type | Not recorded | 4x4 articulated 4WD | — |
| Drive Type | Not recorded | 4WD | — |
| Steering Type | Not recorded | Articulated power | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Starter Type | Electric | Not recorded | — |
| Spec | Allis Chalmers HD21 | Steiger Bearcat IV KM-225 | Difference |
|---|---|---|---|
| Coolant | 20gal | 16gal | ▲ HD21+4 gal · +25% |
Category context