Caterpillar
Caterpillar R3
The Caterpillar R3 was an agricultural crawler tractor produced from 1934 to 1935. It was a special-order machine for the US Government, based on the Twenty-Eight model. Built in Peoria, Illinois, USA, only 60 units were made. It featured a Caterpillar 5.7L 4-cylinder liquid-cooled gasoline engine, a 3-speed gear transmission with dry disc clutch, and delivered 34.44 hp at the drawbar and 41.99 hp at the belt. The tractor had a crawler drive and an open operator station.
Power46 hp[B]
Founded1934 - 1935
ModelR3
Technical Specifications
Detailed specifications and technical data for Caterpillar R3
Power
| Belt (tested) | 41.99 hp (31.3 kW) |
|---|---|
| Drawbar (tested) | 34.44 hp (25.7 kW) |
Engine
| Make | Caterpillar |
|---|---|
| Type | gasoline |
| Cooling | liquid-cooled |
| Cylinders | 4-cylinder |
| Rated RPM | 1100 |
| Air cleaner | oil bath |
| Bore/Stroke | 4.50x5.50 inches (114 x 140 mm) |
| Fuel system | Ensign carburetor |
| Displacement | 350 ci (5.7 L) |
Mechanical
| Drive | crawler |
|---|---|
| Operator station | Open operator station. |
Production
| Type | Agricultural Crawler tractor |
|---|---|
| Notes | The R3 was a special-order machine for the US Government, based on the Twenty-Eight. |
| Built in | Peoria, Illinois, USA |
| Total built | 60 |
| Years produced | 1934 - 1935 |
Transmission
| Type | gear |
|---|---|
| Gears | 3 forward and 1 reverse |
| Clutch | dry disc |
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