Allis ChalmersModel A
Allis Chalmers HD20
Industrial
- power
- Not recorded
- displacement
- 660 ci
- Cylinders
- 6
- Forward gears
- 2
Head to head · Industrial
Allis Chalmers HD20 vs John Deere 9420R
John DeereModel B
John Deere 9420R
Four-Wheel Drive
- power
- Not recorded
- displacement
- 826 ci
- Cylinders
- 6
- Forward gears
- 18
Allis ChalmersAllis Chalmers HD20
vs
John DeereJohn Deere 9420R
How they compare
Headline specs vs. the whole Industrial
Engine Displacement
▲ 9420R higher · +166 ci (+25%)HD20660 ci
9420R826 ci
Median Industrial Tractor284 ci
HD20 is in the 76th percentile; 9420R is in the 84th · 53 models
Cylinders
= Effectively tiedHD206
9420R6
Median Industrial Tractor4
HD20 is in the 88th percentile; 9420R is in the 88th · 55 models
Forward Gears
▲ 9420R higher · +16 (+800%)HD202
9420R18
Median Industrial Tractor5
HD20 is in the 1st percentile; 9420R is in the 97th · 43 models
Operating Weight
▲ 9420R higher · +1,965 lb (+5%)HD2041,000 lb
9420R42,965 lb
Median Industrial Tractor9,127 lb
HD20 is in the 97th percentile; 9420R is in the 98th · 49 models
HD20 (A)9420R (B)Median Industrial Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Manufacturer | Allis Chalmers | John Deere | — |
| Model | HD20 | 9420R | — |
| Category | Industrial | Four-Wheel Drive | — |
Engine
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Manufacturer | General Motors | John Deere | — |
| Model | Not recorded | John Deere Diesel six-cylinder vertical with two turbochargers, air-to-air aftercooler, and D.E.F (Diesel Exhaust Fluid) exhaust treatment | — |
| Rated RPM | 1,700RPM | 2,100RPM | ▲ 9420R+400 RPM · +24% |
| Cylinders | 6 | 6 | Same |
| Displacement | 660ci | 826ci | ▲ 9420R+166 ci · +25% |
| Bore | 5in | 5.2in | ▲ 9420R+0.2 in · +4% |
| Stroke | 5.6in | 6.5in | ▲ 9420R+0.9 in · +16% |
Transmission
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Type | Torque converter | Selective gear fixed ratio with full range operator controlled power shift | — |
Dimensions & Weight
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Length | 191in | 314in | ▲ 9420R+123 in · +64% |
| Width | Not recorded | 176in | — |
| Height | 95in | 145in | ▲ 9420R+50 in · +53% |
| Operating Weight | 41,000lb | 42,965lb | ▲ 9420R+1,965 lb · +5% |
Hydraulics
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| System Type | Not recorded | Closed-center pressure/flow compensated | — |
Hitch & Towing
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Hitch Type | Not recorded | Category 4N, Category 4 | — |
| Hitch Category | Not recorded | IV | — |
| Hitch Position | Not recorded | Rear | — |
Electrical
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Starter Type | 24 volts | 12 volt electric | — |
Capacities
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Coolant | 15gal | 16.8gal | ▲ 9420R+1.8 gal · +12% |
Operator Station
| Spec | Allis Chalmers HD20 | John Deere 9420R | Difference |
|---|---|---|---|
| Type | Not recorded | Cab | — |
Category context
Both models against the field
Engine Displacement
median 284 ciA · 76th percentile (660 ci)B · 84th percentile (826 ci)
Cylinders
median 4A · 88th percentile (6)B · 88th percentile (6)
Forward Gears
median 5A · 1st percentile (2)B · 97th percentile (18)
Operating Weight
median 9,127 lbA · 97th percentile (41,000 lb)B · 98th percentile (42,965 lb)
Length
median 125 inA · 86th percentile (191 in)B · 99th percentile (314 in)
A · HD20B · 9420RMedian Industrial Tractor