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Tractor · 1931Unverified

Caterpillar Fifty

Caterpillar Fifty — Agricultural Crawler tractor · 64 hp. Reference specifications; pending source verification.

The Caterpillar Fifty is a tractor model with a rated power output of 64 hp, positioning it at the lower end of its class in terms of power. It was manufactured from 1931 to 1937. The tractor is equipped with a 4-cylinder diesel liquid-cooled engine, paired with a tracked undercarriage and a 4-speed gearbox. Its listed operating weight is 8275 kg, making it suitable for operations covering up to 200 acres.

Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.

Rated power
64 hp
Max power
36.8 kW
Weight
8275 kg

Catalogue coverage

Variants represented
2
Richest spec table
55 rows
Recorded power
64 hp
Recorded weight
8275 kg
Transmissions
4-speed gear
Production years
1931-1937
Verified variants
0

No linked source document is currently displayed; verify critical figures with the manufacturer or dealer.

Hover a source tag to verify

Overview

ManufacturerCaterpillarReference
Agricultural Crawler tractorReference
Built in Peoria, Illinois, USAReference
DrivecrawlerReference
Open operator station.Reference

Engine

Caterpillar 4-cyl gasolineReference
Caterpillar 11.4L 4-cyl dieselReference
Caterpillar 13.6L 4-cyl dieselReference
Drawbar (tested)48.0 kWReference
Belt (tested)53.5 kWReference
CaterpillarReference
gasolineReference
4-cylinderReference
liquid-cooledReference
dieselReference
Displacement11.4 LReference
Bore/Stroke133 x 203 mmReference
Rated RPM850Reference
Displacement13.6 LReference
Bore/Stroke146 x 203 mmReference
Rated RPM1000Reference
Belt power (max)41.9 kWReference
Max power36.8 kWReference
Belt power (max)45.7 kWReference
Max power39.2 kWReference
Belt power (max)45.5 kWReference
Max power39.5 kWReference
Belt power (max)53.5 kWReference
Max power48.0 kWReference

Transmission

4-speed gearReference
TypegearReference
Gears4 forward and 1 reverseReference

Dimensions

Weight8275 kgReference
15-inch tracksReference

Caterpillar Fifty Tracks

Width38 cmReference

Test results

NTTL 204: gasoline 4-speed crawlerReference
NTTL 214: 11.4L diesel 4-speed crawlerReference
NTTL 240: 13.6L diesel (850 rpm) 4-speed crawlerReference
NTTL 241: 13.6L diesel (1000 rpm) 4-speed crawlerReference
Gasoline 4-speed crawlerMay 18 - June 11, 1932Link: Nebraska Tractor Test 204 fileReference
Belt fuel use (max)25.4 l/hourReference
Drawbar performanceReference
Gear 1 used for power test.Reference
Max pull5470 kgReference
Gear 1 used for pull test.Reference
11.4L diesel 4-speed crawlerMay 17 - June 2, 1933Link: Nebraska Tractor Test 214 fileReference
Belt fuel use (max)17.4 l/hourReference
Max pull5790 kgReference
13.6L diesel (850 rpm) 4-speed crawlerAugust 19 - 29, 1935Link: Nebraska Tractor Test 240 fileReference
Belt fuel use (max)15.5 l/hourReference
Gear 2 used for power test.Reference
Max pull5946 kgReference
13.6L diesel (1000 rpm) 4-speed crawlerAugust 29 - September 16, 1935Link: Nebraska Tractor Test 241 fileReference
Belt fuel use (max)19.3 l/hourReference
Max pull6119 kgReference

Values normalized to UK metric units. Every figure is traced to at least one source; verified specs are cross-checked against two or more.

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