CaterpillarModel A
Caterpillar D4
Industrial
- power
- Not recorded
- displacement
- 312 ci
- Cylinders
- 4
- Forward gears
- 5
Head to head · Industrial
Caterpillar D4 vs Caterpillar RD8
Image not recorded
CaterpillarModel B
Caterpillar RD8
Industrial
- power
- Not recorded
- displacement
- 1,246 ci
- Cylinders
- 6
- Forward gears
- 6
CaterpillarCaterpillar D4
vs
CaterpillarCaterpillar RD8
How they compare
Headline specs vs. the whole Industrial
Engine Displacement
▲ RD8 higher · +934 ci (+299%)D4312 ci
RD81,246 ci
Median Industrial Tractor284 ci
D4 is in the 51st percentile; RD8 is in the 99th · 53 models
Cylinders
▲ RD8 higher · +2 (+50%)D44
RD86
Median Industrial Tractor4
D4 is in the 50th percentile; RD8 is in the 88th · 55 models
Forward Gears
▲ RD8 higher · +1 (+20%)D45
RD86
Median Industrial Tractor5
D4 is in the 50th percentile; RD8 is in the 65th · 43 models
Operating Weight
▲ RD8 higher · +23,530 lb (+236%)D49,970 lb
RD833,500 lb
Median Industrial Tractor9,127 lb
D4 is in the 54th percentile; RD8 is in the 95th · 49 models
D4 (A)RD8 (B)Median Industrial Tractor
Full comparison
Every spec, side by side
General Information
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Caterpillar | Same |
| Model | D4 | RD8 | — |
| Category | Industrial | Industrial | Same |
Engine
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Manufacturer | Caterpillar | Caterpillar | Same |
| Model | D4400 | D13000 | — |
| Rated RPM | 1,400RPM | 1,000RPM | ▲ D4+400 RPM · +40% |
| Cylinders | 4 | 6 | ▲ RD8+2 · +50% |
| Displacement | 312ci | 1,246ci | ▲ RD8+934 ci · +299% |
| Bore | 4.3in | 5.8in | ▲ RD8+1.5 in · +35% |
| Stroke | 5.5in | 8in | ▲ RD8+2.5 in · +45% |
Transmission
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Type | Gear | Gear | Same |
Dimensions & Weight
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Length | 121in | Not recorded | — |
| Width | 62in | 20in | ▲ D4+42 in · +210% |
| Height | 60.6in | Not recorded | — |
| Operating Weight | 9,970lb | 33,500lb | ▲ RD8+23,530 lb · +236% |
Hydraulics
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Steering Type | Manual Clutches | Not recorded | — |
Chassis & Drive
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Chassis Type | 4x2 | Not recorded | — |
| Drive Type | 2WD | Not recorded | — |
| Steering Type | Manual Clutches | Not recorded | — |
Capacities
| Spec | Caterpillar D4 | Caterpillar RD8 | Difference |
|---|---|---|---|
| Coolant | 11gal | Not recorded | — |
Category context
Both models against the field
Engine Displacement
median 284 ciA · 51st percentile (312 ci)B · 99th percentile (1,246 ci)
Cylinders
median 4A · 50th percentile (4)B · 88th percentile (6)
Forward Gears
median 5A · 50th percentile (5)B · 65th percentile (6)
Operating Weight
median 9,127 lbA · 54th percentile (9,970 lb)B · 95th percentile (33,500 lb)
Width
median 70.5 inA · 29th percentile (62 in)B · 5th percentile (20 in)
A · D4B · RD8Median Industrial Tractor