Caterpillar Thirty

Last Updated: July 2024

Overview

The Caterpillar Thirty is equipped with a 4-cylinder, distillate-powered, liquid-cooled engine from Caterpillar. It has an engine displacement of 461 cubic inches, and a bore and stroke of 4.25x5.5 inches. The engine operates at a rated 1400 RPM. The tractor's transmission is of the gear type, with 5 forward gears and 1 reverse. The tractor has multiple widths, with the highest being 30 inches. Independent test results show a maximum observed drawbar horsepower of 30.88 and a maximum observed belt horsepower of 36.37. Additional details include water consumption and engine cooling temperature at maximum load.

Key Specifications

Transmission: Gear

Fuel Type: Distillate

Image Gallery

Caterpillar Thirty Tractor

Technical Specifications

Engine

Manufacturer: Caterpillar
Model: -
Cooling Type: Liquid-cooled
Cylinder Orientation: -
Valve Configuration: -
Fuel Type: Distillate
Induction Type: Natural aspiration (assumed from absence of turbo or supercharged mention)
Cylinders: 4
Displacement (ci): 461
Bore (in): 4.25
Stroke (in): 5.5
Rated RPM: 1400
Power Output (hp): -

Transmission

Type: Gear
Forward Gears: 5
Reverse Gears: 1
Total Gears: -

Dimensions

Length (in): -
Width (in): 30 (Highest width provided)
Height (in): -
Operating Weight (lb): -

Power Take-Off (PTO)

PTO Type: -
PTO Speed 1 (rpm): -
PTO Speed 2 (rpm): -
PTO Speed 3 (rpm): -

Miscellaneous

Chassis: -
Drive Type: -
Steering Type: -
Coolant Capacity (qts): -
Front Tire Diameter (in): -
Front Tire Width (in): -
Rear Tire Diameter (in): -
Rear Tire Width (in): -
Front/Rear Rim Diameter (in): -
Tire Type: -
Manufacture - End Year: -
Hitch Type: -
Hitch Category: -
Hitch Position: -
Hitch Capacity (lb): -
Operator Station Type: -
Starter Type: -
Brake Type: -
Hydraulic System Type: -

Test Results

Nebraska Tractor Test Laboratory - Test Date: October 13 to 24, 1936

Maximum Power and Fuel Consumption

Maximum Power (Belt): 36.37 HP at 1400 rpm
Fuel Consumption at Maximum Power (Belt): 4.447 gallons/hour
Maximum Power (Drawbar): 30.88 HP
Fuel Efficiency at Maximum Power: 0.849 lbs of fuel per HP.hour

Drawbar Performance

Power (Second Gear): 30.88 HP with a drawbar pull of 5032 lbs and speed of 2.30 mph
Fuel Consumption at Rated Speed: Not Recorded

Torque and Engine Performance

Rated RPM: 1400 RPM
Bore and Stroke: 4 1/4" x 5 1/2"
Compression Ratio: Not Specified

Hydraulic Performance

Water Consumption: Approximately 8.18 gallons/hour at maximum load
Engine Cooling Temperature: 203°F at maximum power load

Key Observations

Observed maximum horsepower (Drawbar): 30.88
Observed maximum horsepower (Belt): 36.37

Nebraska Tractor Test Lab, "Test 271: Caterpillar Model 30 (Distillate)" (1936). Nebraska Tractor Tests. 874. Retrieved from https://digitalcommons.unl.edu/tractormuseumlit/874