International Harvester BTD-20 Specs ( 1959-1974 )
Overview
Built in Doncaster, England, the International Harvester BTD-20 is a powerful agricultural crawler featuring a 12.2L Rolls-Royce 6-cylinder diesel engine. This 135 hp machine offers high-capacity performance with a 6-speed gear transmission and an operating weight of over 30,000 lbs, making it a robust choice for heavy-duty farm operations.
Ideal Applications
Heavy Tillage and Field Prep:
With 112.5 claimed drawbar horsepower and a 20-inch track width, this crawler provides the traction and power necessary for demanding agricultural tasks across 3,760 square inches of ground contact.
High-Torque Applications:
The Rolls-Royce C6N engine delivers 480 lb-ft of torque at 1150 RPM, providing the lugging ability needed for pulling heavy implements through difficult soil conditions.
Bi-Directional Maneuvering:
Equipped with 6 forward and 6 reverse gears, this tractor is highly efficient for applications requiring frequent directional changes and consistent speeds in both directions.
Production
| Description | Agricultural Crawler tractor / Built in Doncaster, England |
|---|---|
| Manufacturer | International Harvester |
| Total built | 3038 |
Engine
| Engine type | Rolls-Royce 12.2L 6-cyl diesel |
|---|---|
| Fuel tank | 70.9 gal (268.4 L) |
| Bore/Stroke | 5.125x6.00 inches (130 x 152 mm) |
| Coolant capacity | 43.2 qts (40.9 L) |
| Description | Rolls-Royce C6N / diesel / 6-cylinder / liquid-cooled |
| Displacement | 742.6 ci (12.2 L) |
| Oil capacity | 33.6 qts (31.8 L) |
| Power (net) | 135 hp (100.7 kW) |
| Rated RPM | 1550 |
| Starter | electric |
| Starter volts | 24 |
| Torque | 480 lb-ft (650.9 Nm) |
| Torque RPM | 1150 |
| Drawbar (claimed) | 112.5 hp (83.9 kW) |
| Engine (net) | 135 hp (100.7 kW) |
Transmission
| Clutch | 406mm dry disc |
|---|---|
| Gears | 6 forward and reverse |
| Oil capacity | 42.8 qts (40.5 L) |
| Transmission type | 6-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station |
|---|---|
| Drive | crawler |
| Final drives | bull gear |
Electrical
| Charging system | generator |
|---|
Dimensions & Tires
| Gauge | 74 inches (187 cm) |
|---|---|
| Ground clearance | 14 inches (35 cm) |
| Height | 89.7 inches (227 cm) |
| Length | 165.1 inches (419 cm) |
| Operating weight | 30300 lbs (13744 kg) |
| Width | 94 inches (238 cm) |
BTD-20 Serial Numbers
| 1959 | 556 |
|---|---|
| 1960 | 845 |
| 1961 | 1260 |
| 1962 | 1637 |
| 1963 | 1973 |
| 1964 | 2296 |
| 1965 | 2549 |
| 1966 | 2820 |
| 1967 | 2996 |
| 1968 | 3140 |
| 1969 | 3236 |
| 1970 | 3314 |
| 1971 | 3439 |
| 1972 | 3489 |
| 1973 | 3542 |
| 1974 | 3590 |
| Description | FAQ: How to read a serial number table. |
| Final | 3594 |
Dimensions & Tracks
| Description | 20-inch tracks |
|---|---|
| Weight | 30300 lbs (13744 kg) |
International Harvester BTD-20 Tracks
| Area on ground | 3760 in² (2.4 m²) |
|---|---|
| Length on ground | 94 inches (238 cm) |
| Width | 20 inches (50 cm) |
References
| Description | International 1917-1961 Vintage Tractor Special by Allen Condie* / The Roar of Dust and Diesel - A Story of International Harvester Doncaster by Mike Teanby / Technical Annual published in 1967, by Power Farming / BTD-20 (201 Series) DROTT 4-in-1 and Straight Bucket published by International Harvester / World Wide Farm Equipment Buyer's Guide published in 1968, by International Harvester* / Farm Crawlers published by International Harvester / BTD-20 Diesel Crawler Tractor published by International Harvester / *Publication contains known errors. |
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