David Brown 50D
The David Brown 50D is a tractor produced by David Brown. It is equipped with a 248 ci 4.1 L engine. The listed engine power is Diesel (listed): 50 hp / 37.3 kW. Transmission: 6 forward and 2 reverse. Operating weight: 6,130 lbs 2780 kg.
Engine Power
Diesel (listed): 50 hp / 37.3 kW
Fuel & Capacities
14.5 gal
54.9 L
Transmission
6 forward and 2 reverse
Operating Weight
6,130 lbs
2780 kg
Overview
 | 1953 - 1958 |
|---|
Production | |
|---|---|
Manufacturer | David Brown |
David Brown 50D Engine | |
|---|---|
David Brown 4.1L 6-cyl diesel | |
Fuel tank | 14.5 gal
54.9 L |
Engine details ...  | |
David Brown 50D Transmission | |
|---|---|
6-speed gear | |
Transmission details ...  |
David Brown 50D Power | |
|---|---|
Engine | 50 hp
37.3 kW |
Mechanical | |
|---|---|
Two-wheel drive | |
Steering | manual |
Mechanical drum brakes | |
Open operator station. | |
Power Take-off (PTO) | |
|---|---|
Rear PTO Type | 540 |
Dimensions & Tires | |
|---|---|
Wheelbase | 81.75 inches
207 cm |
Weight | 6,130 lbs
2780 kg |
Front tire | 7.50-18 |
Rear tire | 14-30 |
Full dimensions and tires ...  | |
Engine
Engine Detail — 248 ci / 4.1 L Diesel
Manufacturer | David Brown |
Fuel Type | Diesel |
Configuration | 6-cylinder, liquid-cooled |
Displacement | 248 ci
4.1 L |
Bore/Stroke | 3.625x4.00 inches
92 x 102 mm |
Power | 50 hp
37.3 kW |
Compression | 16:1 |
Rated RPM | 1800 |
Idle RPM | 700-1800 |
Oil capacity | 11 qts
10.4 L |
Coolant capacity | 20 qts
18.9 L |
Transmission
Transmission — 6 forward and 2 reverse gear
Type | gear |
Gears | 6 forward and 2 reverse |
Clutch | 10-inch dry disc |
Oil capacity | 24 qts
22.7 L |
 | |
Dimensions
David Brown 50D Tires | |
|---|---|
Ag front | 7.50-18 |
Ag rear | 14-30 |
Dimensions | |
|---|---|
Wheelbase | 81.75 inches
207 cm |
Length | 134.75 inches
342 cm |
Width | 74 inches
187 cm |
Height (hood) | 65 inches
165 cm |
Weight | 6,130 lbs
2780 kg |
Ground clearance | 13 inches
33 cm |
Recommended Implements & Sizing Guide
Engineering recommendations for David Brown 50D based on its 50 HP power envelope and ASAE agricultural standards.
| Implement & Operation | Recommended Size | Workload Rating | Engineering Notes |
|---|---|---|---|
Moldboard PlowPrimary Tillage | 2 to 3 Bottom (14-16")2 - 3 铧 (35-40 cm) | Medium Duty | Standard utility farm tillage. |
Rotary Cutter / MowerMowing & Clearing | 6 ft (72 in)1.8 m | Medium Duty | Medium pasture clearing; rear slip-clutch recommended. |
Rotary TillerSeedbed Prep | 66 to 72 in165 - 180 cm | Medium Duty | Standard utility tiller; slip clutch protection required. |
Disc HarrowSecondary Tillage | 7 to 8 ft Tandem Disc2.1 - 2.4 m 对开双排耙 | Medium Duty | Field leveling and clod breaking behind plows. |
Hay BalerHay & Forage | Small Square Baler (14x18")小方捆打捆机 (36x46 cm) | Medium Duty | Classic 2-string baler for horse and small livestock hay. |
Sizing & Soil Condition NoteActual implement sizing varies depending on local soil conditions (heavy clay vs sandy loam), field slope, and operating speed. Heavy tillage implements may require front ballast weights and wheel weights.
Fluids, Capacities & Working Autonomy
Standard fluid requirements, service intervals, and continuous runtime estimates for David Brown 50D.
Estimated Continuous Field Runtime: 5.6 hrs
Approximately 5.6 hours of continuous field operation at ~75% rated power on a full tank (14.5 gal / 54.9 L).
Estimated 75% Load Fuel Burn~2.6 gal/hr (9.8 L/hr)
Engine Crankcase Oil
SAE 15W-40 (Heavy Duty Diesel)
Standard Spec: API CK-4 / CJ-4 Heavy Duty
Service Interval: 150 – 250 Hours
Transmission & Hydraulic System
UTTO (Universal Tractor Transmission Oil)
Standard Spec: ISO VG 46 / 68 (Wet Brake & Trans Compatible)
Service Interval: 600 – 1000 Hours
Engine Cooling System
50/50 Ethylene Glycol Pre-mix
Standard Spec: ASTM D6210 / Heavy-Duty OAT Antifreeze
Service Interval: 2 Years / 1500 Hours
David Brown 50D Specification Unit Converter
Convert power, fluid capacities, and operating weights between metric and imperial standards for David Brown 50D.
Converted Equivalents:
Horsepower (HP)50 hp
Kilowatts (kW)37.3 kW
Metric Horsepower (PS / CV)50.7 PS
Direct Competitor Comparison
Compare David Brown 50D against same-era industry alternatives in the same horsepower class.
Current Model
David Brown
David Brown 50D
Engine Power:Diesel (listed): 50 hp / 37.3 kW
★ Baseline Reference
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