| Manufacturer |
Cletrac |
| Price |
- |
| Model |
BD |
| Equipment Type |
Agricultural Crawler Tractors |
| Factory |
Cleveland, Ohio, USA |
VARIANTS
NEBRASKA TRACTOR TEST 325
| Description |
Diesel 4-speed crawler/August 10 - 30, 1939/Link: Nebraska Tractor Test 325 file/Drawbar performance/Gear 2 used for power test./Gear 1 used for pull test. |
| Belt power (max) |
45.37 hp/33.8 kW |
| Belt fuel use (max) |
3.5 gal/hour/13.2 l/hour |
| Max power |
36.07 hp/26.9 kW |
| Max pull |
7530 lbs/3415 kg |
CLETRAC BD POWER
| Drawbar (claimed) |
38.1 hp/28.4 kW |
| Belt (claimed) |
48.1 hp/35.9 kW |
| Plows |
4 |
| Drawbar (tested) |
36.07 hp/26.9 kW |
| Belt (tested) |
45.37 hp/33.8 kW |
ENGINE DETAIL
The Cletrac BD tractor features a robust Hercules 6-cylinder diesel engine with a displacement of 4.9 L, offering a balance between power and fuel efficiency at a rated RPM of 1400. Its liquid-cooling system enhances engine longevity and performance under continuous load conditions, making it suitable for heavy-duty applications such as farming or construction. However, the relatively low RPM may limit its speed capabilities compared to tractors designed for higher RPM operations.
| Description |
Hercules/diesel/6-cylinder/liquid-cooled |
| Displacement |
298 ci/4.9 L |
| Bore/Stroke |
3.75x4.50 inches/95 x 114 mm |
| Rated RPM |
1400 |
| Starter type |
electric |
CLETRAC BD ENGINE
The Cletrac BD tractor is powered by a Hercules 4.9L 6-cylinder diesel engine, which provides robust torque and durability suitable for heavy-duty applications. Key advantages include excellent fuel efficiency and lower operational costs; however, the engine's complexity might lead to higher maintenance requirements. In scenarios involving rugged terrain or prolonged fieldwork, the tractor's superior power and efficiency can significantly enhance productivity.
| Description |
Hercules 4.9L 6-cyl diesel |
TRANSMISSION
The Cletrac BD tractor features a 4-speed forward and 2-speed reverse gear system, which allows for versatile operation in varied terrains, enhancing maneuverability. Its dry disc clutch design provides reliable engagement and disengagement of power, although it may require more frequent maintenance compared to wet clutches due to wear from dust and friction. This tractor is well-suited for agricultural tasks where precise control and durability are essential, but operators should be mindful of the potential need for regular clutch adjustments.
| Type |
gear |
| Gears |
4 forward and 2 reverse |
| Clutch |
dry disc |
MECHANICAL
The Cletrac BD tractor features a crawler chassis, providing superior traction and stability on uneven terrain, making it ideal for agricultural and construction applications. Its open operator station enhances visibility but may expose the operator to environmental conditions. The 4-speed gear transmission allows for versatility in speed adjustments, which is advantageous for varying tasks but may require more operator skill for efficient shifting.
| Chassis |
crawler |
| Cab |
Open operator station. |
| Transmission |
4-speed gear |
CLETRAC BD TRACKS
| Size |
14-inch tracks |
| Option |
16-inch tracks/18-inch tracks/20-inch tracks |
DIMENSIONS
| Length |
116.5 inches/295 cm |
| Width |
60.125 inches/152 cm |
| Height |
59 inches/149 cm |
| Weight |
9400 lbs/4263 kg |
| BD Gauge |
44 inches/111 cm |
| BDH Gauge |
52 inches/132 cm |
DIMENSIONS & TRACKS
| Weight |
9400 lbs/4263 kg |
| Description |
14-inch tracks |
BD SERIAL NUMBERS
| 1936 |
2D000 |
| 1937 |
2D094 |
| 1938 |
2D894 |
| 1939 |
3D708 |
| 1940 |
4D206 |
| 1941 |
5D422 |
| 1942 |
6D032 |
| 1943 |
6D286 |
| 1944 |
6D782 |
| 1945 |
7D714 |
| 1946 |
8D474 |
| 1947 |
9D680 |
| 1948 |
11D224 |
| 1949 |
13D818 |
| 1950 |
15D658 |
| 1951 |
16D514 |
| 1952 |
17D684 |
| 1953 |
3500000 |
| 1954 |
4500000 |
| 1955 |
19D700 |
| 1956 |
20D220 |
BELT PULLEY
| Diameter |
12 inches/30 cm |
| Width |
8.5 inches/21 cm |
| RPM |
1045 |
| Speed |
3300 ft/min/1005.84 meters/min |
