Tractor · 1912Unverified
J.I. Case 20-40
J.I. Case 20-40 — Standard-tread tractor · 20 hp. Reference specifications; pending source verification.
Provisional listing — the headline figure is shown; full specifications are auto-generated and pending verification against published sources.
Rated power
20 hp
Max power
18.4 kW
Weight
6305 kg
Hover a source tag to verify
Overview
ManufacturerJ.I. CaseReference
Standard-tread tractorReference
Built in Racine, Wisconsin, USAReference
Total built4,465Reference
Original price$2,100 (1916)Reference
Two-wheel driveReference
SteeringmanualReference
Open operator station. Optional four-post steel cab.Reference
Engine
J.I. Case 12.4L 2-cyl keroseneReference
J.I. Case 14.8L 2-cyl keroseneReference
J.I. Case 17.7L 2-cyl keroseneReference
Fuel tank159.0 LReference
Drawbar (claimed)14.9 kWReference
Belt (claimed)29.8 kWReference
Drawbar (tested)18.4 kWReference
Belt (tested)31.9 kWReference
J.I. CaseReference
keroseneReference
2-cylinderReference
liquid-cooled opposed-twinReference
The original engine, was used on the first model 40 tractors produced in 1912.Reference
Displacement12.4 LReference
Bore/Stroke197 x 203 mmReference
Rated RPM450Reference
Starter typehand-crankReference
The 8-inch bore engine replaced the original engine early in production, at the end of 1912.Reference
Displacement14.8 LReference
Bore/Stroke203 x 229 mmReference
Rated RPM475Reference
Coolant capacity106.0 LReference
liquid-cooledReference
The final, 8.75-inch bore, engine replaced the 8-inch around 1916. Case did not re-rate the horsepower of the tractor, despite a 20% increase in displacement.Reference
Displacement17.7 LReference
Bore/Stroke222 x 229 mmReference
Belt power (max)31.9 kWReference
Max power18.4 kWReference
Transmission
2-speed gearReference
TransmissionJ.I. CaseReference
TypegearReference
Gears2 forward and 1 reverseReference
Dimensions
Weight6305 kgReference
Front tire38x8Reference
Rear tire66x20Reference
Ag front38x8 steelReference
Ag rear66x20 steelReference
Length449 cmReference
Width254 cmReference
Height271 cmReference
Operating weight6305 kgReference
Rear axle100 mmReference
20-40 Serial Number Location
Serial number plate on left side of tractor frame, above the front axle.Reference
Capacities
Diameter60 cmReference
Width21 cmReference
Test results
1082ci kerosene 2-speed 2WDApril 10 - May 7, 1920Link: Nebraska Tractor Test 7 fileReference
Belt fuel use (max)29.1 l/hourReference
Drawbar performanceReference
Max pull2511 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.