Caterpillar

Caterpillar Thirty

The Caterpillar Thirty is an agricultural crawler tractor produced from 1925 to 1938 by Caterpillar. It features a 7.6L 4-cylinder gasoline engine with an estimated 40.4 hp engine power for comparison. The tractor was manufactured in San Leandro, California and Peoria, Illinois, USA. It has a crawler drive with an open operator station and offers 3-speed and 5-speed gear transmission options. The tractor's drawbar power is tested at 30.88 hp and belt power at 36.37 hp. Track widths vary from 13 to 30 inches, and the gauge ranges from 43.75 to 60.75 inches. The belt pulley diameter is 12 inches with a width of 8.5 inches and runs at 840 RPM. The Caterpillar Thirty is a continuation of the Best model Thirty, which had been in production since 1921.

Power40 hp[B]

Founded1925 - 1938

ModelThirty

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Technical Specifications

Detailed specifications and technical data for Caterpillar Thirty

Power

Belt (tested)	36.37 hp (27.1 kW)
Drawbar (tested)	30.88 hp (23.0 kW)

Engine

Type	Caterpillar 7.6L 4-cyl gasoline
Aux. fuel	2.6 gal (9.8 L)
Fuel tank	37.5 gal (141.9 L)
Rated RPM	1400
Air cleaner	oil bath
Bore/Stroke	4.75x6.50 inches (121 x 165 mm)
Fuel system	Zenith K5A carburetor
Displacement	461 ci (7.6 L)
Engine Detail	Caterpillar gasoline 4-cylinder liquid-cooled

Dimensions

Gauge	43.75 inches (111 cm), 60.75 inches (154 cm)
Tracks Widths	13 inches (33 cm), 16 inches (40 cm), 18 inches (45 cm), 24 inches (60 cm), 30 inches (76 cm)

Mechanical

Drive	crawler
Operator station	Open operator station

Production

Factories	San Leandro, California, USA; Peoria, Illinois, USA
Description	The Caterpillar model Thirty is a continuation of the Best model Thirty, which had been in production since 1921
Manufacturer	Caterpillar
Years produced	1925 - 1938

Belt Pulley