Overview
The J.I. Case 12-20 is a standard-tread farm tractor produced in Racine, Wisconsin, from 1921 to 1924. It features a 4.4L liquid-cooled four-cylinder kerosene engine paired with a 2-speed gear transmission with two forward and one reverse gears. The tractor is configured with an open operator station, manual steering, and steel rear tires, weighing a total of 4,232 lbs.
Ideal Applications
Tested Power Ratings:
In Nebraska Tractor Test 91, the 12-20 demonstrated a maximum belt power of 25.54 hp and a maximum drawbar pull of 3,150 lbs, outperforming its claimed ratings of 20 hp and 12 hp respectively.
Belt Pulley Specifications:
The machine is equipped with a 14.5-inch diameter belt pulley with a 6.375-inch width that operates at 1050 RPM to deliver tested stationary power.
Chassis and Drive Layout:
The mechanical design utilizes a 2WD drive system and a 63-inch wheelbase supported by 42x12 steel rear tires and a hand-crank starter for the 267.3 ci engine.
Production
| Description | Standard-tread tractor / Built in Racine, Wisconsin, USA |
|---|---|
| Manufacturer | J.I. Case |
Engine
| Engine type | J.I. Case 4.4L 4-cyl kerosene |
|---|---|
| Bore/Stroke | 4.125x5.00 inches (105 x 127 mm) |
| Description | J.I. Case / kerosene / 4-cylinder / liquid-cooled |
| Displacement | 267.3 ci (4.4 L) |
| Rated RPM | 1050 |
| Starter type | hand-crank |
| Belt (claimed) | 20 hp (14.9 kW) |
| Belt (tested) | 25.54 hp (19.0 kW) |
| Drawbar (claimed) | 12 hp (8.9 kW) |
| Drawbar (tested) | 17.52 hp (13.1 kW) |
| Plows | 2 |
Transmission
| Gears | 2 forward and 1 reverse |
|---|---|
| Transmission | J.I. Case |
| Transmission type | 2-speed gear |
| Type | gear |
Mechanical
| Cab | Open operator station. |
|---|---|
| Description | Manual steering |
| Drive type | Two-wheel drive |
Dimensions & Tires
| Height | 55.5 inches (140 cm) |
|---|---|
| Length | 109 inches (276 cm) |
| Weight | 4,232 lbs (1919 kg) |
| Wheelbase | 63 inches (160 cm) |
| Width | 58 inches (147 cm) |
| Rear tire | 42x12 |
| Weight | 4,232 lbs (1919 kg) |
| Wheelbase | 63 inches (160 cm) |
| Ag rear | 42x12 steel |
Belt Pulley
| Diameter | 14.5 inches (36 cm) |
|---|---|
| RPM | 1050 |
| Width | 6.375 inches (16 cm) |
Nebraska Tractor Test 91
| Belt fuel use (max) | 3.6 gal/hour (13.6 l/hour) |
|---|---|
| Belt power (max) | 25.54 hp (19.0 kW) |
| Description | Kerosene 2-speed 2WDApril 6 - 17, 1923Link: Nebraska Tractor Test 91 file / Drawbar performance |
| Max power | 17.52 hp (13.1 kW) |
| Max pull | 3,150 lbs (1428 kg) |
References
| Description | Instructions on Operation and Care of the CASE 12-20 Tractor published in 1922 |
|---|