International Harvester BTD-20
Power
135 hp
Production
1959-1974
Engine
Diesel, 6-cylinder
Transmission
Gear
Introduction
International Harvester BTD-20 Crawler Tractor
The International Harvester BTD-20 is a heavy-duty crawler tractor produced between 1959 and 1974. Manufactured in Doncaster, England, this model was designed for demanding agricultural and earthmoving operations, with a total production run of 3,038 units.
Engine and Performance
The machine is powered by a 6-cylinder liquid-cooled diesel engine with a displacement of 12.2 liters. It delivers a net power output of 135 hp (100.7 kW) and generates a maximum torque of 480 lb-ft (650.9 Nm) at 1150 RPM, providing the consistent lugging power required for heavy traction tasks.
Transmission and Drive System
Power is managed through a manual gear transmission offering 6 forward and 6 reverse speeds. The drivetrain utilizes a 406mm dry disc clutch and bull gear final drives to translate engine power into tractive force. The tractor operates on 20-inch tracks, which distribute its 30,300 lbs (13,744 kg) weight to provide stability and traction in challenging terrain.
Operator Environment and Maintenance
The BTD-20 features an open operator station design, prioritizing visibility and accessibility for the operator. Routine maintenance is supported by a 31.8-liter engine oil capacity and a 40.9-liter coolant capacity. The electrical system is powered by a 24-volt starter to ensure reliable ignition.
Conclusion
With its significant weight and substantial torque output, the International Harvester BTD-20 is engineered for heavy-duty field work and land clearing. It remains a notable example of mid-20th-century crawler technology, valued for its mechanical durability and robust construction.
Production Information of International Harvester, BTD-20
- Agricultural Crawler tractor
- Built in Doncaster, England
| Manufacturer | International Harvester |
|---|---|
| Total built | 3038 |
Engine Specifications of International Harvester, BTD-20
- Liquid-cooled
- 6-cylinder
- Diesel
| Rated RPM | 1550 |
|---|---|
| Starter | Electric |
| Displacement | 742.6 ci [12.2 L] |
| Bore/Stroke | 5.125x6.00 inches [130 x 152 mm] |
| Power (net) | 135 hp [100.7 kW] |
| Torque RPM | 1150 |
| Torque | 480 lb-ft [650.9 Nm] |
| Coolant capacity | 43.2 qts [40.9 L] |
| Oil capacity | 33.6 qts [31.8 L] |
| Starter volts | 24 |
Transmission Information of International Harvester, BTD-20
Transmission variants 1
| Type | Gear |
|---|---|
| Oil capacity | 42.8 qts [40.5 L] |
| Gears | 6 forward and reverse |
| Clutch | 406mm dry disc |
Mechanical Specs of International Harvester, BTD-20
- Open operator station
| Drive | Crawler |
|---|---|
| Final drives | Bull gear |
Power Information of International Harvester, BTD-20
| Engine (net) | 135 hp [100.7 kW] |
|---|---|
| Drawbar (claimed) | 112.5 hp [83.9 kW] |
Electrical System of International Harvester, BTD-20
| Charging system | Generator |
|---|
Where it sits
With 135 HP, the International Harvester BTD-20 sits between TD-20 (134 HP) and 1066 (140 HP) in International Harvester's range. Its power puts it in the 98th percentile of 1950s models in our database (592 machines).
Frequently asked questions
How much horsepower does the International Harvester BTD-20 have?
The International Harvester BTD-20 delivers 135 HP.
What years was the International Harvester BTD-20 produced?
The International Harvester BTD-20 was produced in 1959-1974.
What engine does the International Harvester BTD-20 have?
The International Harvester BTD-20 is powered by a Diesel, 6-cylinder engine.
What transmission does the International Harvester BTD-20 use?
The International Harvester BTD-20 uses a Gear transmission.