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John DeereModel A
John Deere 8640
Utility
- power
- 275 hp
- displacement
- 619 ci
- Cylinders
- 6
- Forward gears
- 16
Head to head · Utility
John Deere 8640 vs John Deere 8850
John DeereModel B
John Deere 8850
Utility
- power
- 370 hp
- displacement
- 955 ci
- Cylinders
- 8
- Forward gears
- 16
John DeereJohn Deere 8640
vs
John DeereJohn Deere 8850
How they compare
Headline specs vs. the whole Utility
Engine Power
▲ 8850 higher · +95 hp (+35%)8640275 hp
8850370 hp
Median Utility Tractor55 hp
8640 is in the 96th percentile; 8850 is in the 98th · 5,383 models
Engine Displacement
▲ 8850 higher · +336 ci (+54%)8640619 ci
8850955 ci
Median Utility Tractor183 ci
8640 is in the 95th percentile; 8850 is in the 99th · 5,580 models
Cylinders
▲ 8850 higher · +2 (+33%)86406
88508
Median Utility Tractor4
8640 is in the 93rd percentile; 8850 is in the 99th · 5,720 models
Forward Gears
= Effectively tied864016
885016
Median Utility Tractor12
8640 is in the 73rd percentile; 8850 is in the 73rd · 4,941 models
8640 (A)8850 (B)Median Utility Tractor
Full comparison
Every spec, side by side
General Information
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Manufacturer | John Deere | John Deere | Same |
| Model | 8640 | 8850 | — |
| Category | Utility | Utility | Same |
Engine
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Manufacturer | John Deere | John Deere | Same |
| Power Output | 275hp | 370hp | ▲ 8850+95 hp · +35% |
| Rated RPM | 2,100RPM | 2,100RPM | Same |
| Cylinders | 6 | 8 | ▲ 8850+2 · +33% |
| Displacement | 619ci | 955ci | ▲ 8850+336 ci · +54% |
| Bore | 5.1in | 5.5in | ▲ 8850+0.4 in · +8% |
| Stroke | 5in | 5in | Same |
Transmission
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Type | Partial power shift | Partial power shift | Same |
Dimensions & Weight
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Length | 224in | 258in | ▲ 8850+34 in · +15% |
| Height | 127in | Not recorded | — |
| Operating Weight | 28,270lb | 37,700lb | ▲ 8850+9,430 lb · +33% |
Hydraulics
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| System Type | Closed center | Closed center constant-pressure | — |
| Steering Type | Articulated power | Articulated power | Same |
Power Take-off (PTO)
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Type | Independent | Independent with hydraulic wet disc clutch | — |
| Speed 1 | 1,000rpm | 1,000rpm | Same |
Hitch & Towing
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Hitch Type | Three-Point Hitch | 4/4N | — |
| Hitch Category | III/IIIN | Not recorded | — |
| Hitch Position | Rear | Rear | Same |
| Hitch Capacity | 8,545lb | 10,250lb | ▲ 8850+1,705 lb · +20% |
Chassis & Drive
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Chassis Type | 4x4 articulated 4WD | 4x4 articulated 4WD | Same |
| Drive Type | Four-wheel Drive (4WD) | 4WD | — |
| Steering Type | Articulated power | Articulated power | Same |
| Brake Type | Hydraulic wet disc | Power wet disc | — |
Electrical
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Starter Type | Electric | Electric | Same |
Capacities
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Coolant | 12gal | 19.5gal | ▲ 8850+7.5 gal · +63% |
Operator Station
| Spec | John Deere 8640 | John Deere 8850 | Difference |
|---|---|---|---|
| Type | Cab | Sound-Gard cab with air-conditioning | — |
Category context
Both models against the field
Engine Power
median 55 hpA · 96th percentile (275 hp)B · 98th percentile (370 hp)
Engine Displacement
median 183 ciA · 95th percentile (619 ci)B · 99th percentile (955 ci)
Cylinders
median 4A · 93rd percentile (6)B · 99th percentile (8)
Forward Gears
median 12A · 73rd percentile (16)B · 73rd percentile (16)
Operating Weight
median 5,303 lbA · 97th percentile (28,270 lb)B · 98th percentile (37,700 lb)
A · 8640B · 8850Median Utility Tractor