Caterpillar Sixty Specs ( 1925-1931 )
Overview
The Caterpillar Sixty is a gasoline-powered agricultural crawler tractor produced in San Leandro, California, between 1925 and 1931. It is equipped with an 18.5L 4-cylinder liquid-cooled engine and a gear transmission featuring three forward speeds and one reverse. The machine has a total weight of 19,000 lbs and an open operator station.
Ideal Applications
Tested Performance Metrics:
According to Nebraska Tractor Test 105, the unit achieved a maximum belt power of 73 hp and a maximum drawbar pull of 12,360 lbs.
Engine and Pulley Output:
The 1128.2 ci engine operates at a rated 650 RPM, which facilitates a belt pulley speed of 2640 ft/min through a 16-inch diameter pulley.
Mechanical and Drive Configuration:
The tractor features a crawler-drive system and a 3-speed gear transmission, with physical dimensions of 156 inches in length and 95 inches in width.
Production
| Description | Agricultural Crawler tractor / Original price was $4,000 in 1931 / The Caterpillar model Sixty was based on the Best Sixty, which had been in production since 1921. |
|---|---|
| Factories | San Leandro, California, USA |
| Manufacturer | Caterpillar |
Engine
| Engine type | Caterpillar 18.5L 4-cyl gasoline |
|---|---|
| Bore/Stroke | 6.50x8.50 inches (165 x 216 mm) |
| Description | Caterpillar / gasoline / 4-cylinder / liquid-cooled |
| Displacement | 1128.2 ci (18.5 L) |
| Rated RPM | 650 |
| Belt (claimed) | 73 hp (54.4 kW) |
| Belt (tested) | 73 hp (54.4 kW) |
| Drawbar (claimed) | 40 hp (29.8 kW) |
Transmission
| Gears | 3 forward and 1 reverse |
|---|---|
| Transmission type | 3-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Drive | crawler |
Dimensions & Tires
| Height | 78 inches (198 cm) |
|---|---|
| Length | 156 inches (396 cm) |
| Weight | 19,000 lbs (8618 kg) |
| Width | 95 inches (241 cm) |
Belt Pulley
| Diameter | 16 inches (40 cm) |
|---|---|
| RPM | 650 |
| Speed | 2640 ft/min (804.67 meters/min) |
| Width | 10 inches (25 cm) |
Dimensions & Tracks
| Description | Tracks |
|---|---|
| Weight | 19,000 lbs (8618 kg) |
Nebraska Tractor Test 105
| Belt power (max) | 73 hp (54.4 kW) |
|---|---|
| Description | Gasoline 3-speed crawlerSeptember 15 - 29, 1924Link: Nebraska Tractor Test 105 file / Drawbar performance |
| Max pull | 12,360 lbs (5606 kg) |