| Production | |
| Manufacturer | J.I. Case | 
| Industrial tractor | |
| Built in Racine, Wisconsin, USA | |
| Total built | 3740 | 
| The model SI was the industrial version of the Case model S tractor. | |
| J.I. Case SI Engines | |
| J.I. Case 2.5L 4-cyl gasoline | |
| J.I. Case 2.7L 4-cyl | |
| Fuel tank | 14 gal 53.0 L | 
| Aux. fuel | 1.25 gal 4.7 L | 
|  Engine details ... | |
| J.I. Case SI Transmission | |
| 4-speed unsynchronized gear | |
|  Transmission details ... | 
| J.I. Case SI Power | |
| Engine | 35 hp 26.1 kW | 
| Drawbar (claimed) | 16 hp 11.9 kW | 
| Belt (claimed) | 21 hp 15.7 kW | 
| Plows | 2 (14-inch) | 
| Mechanical | |
| Two-wheel drive | |
| Manual steering | |
| Disc brakes | |
| Open operator station. Steel pan seat with spring suspension. | 
| Photos | |
|  | |
|  J.I. Case SI photos... | |
| Hydraulics | |
| Type | open center | 
| Pump flow | 20 gpm 75.7 lpm | 
| Power Take-off (PTO) | |
| Rear PTO | continuous | 
| Rear PTO Type | 541 | 
| Dimensions & Tires | |
| Wheelbase | 66 inches 167 cm | 
| Weight | 4376 lbs 1984 kg | 
| Rear tire | 12.00-24 | 
|  Full dimensions and tires ... | |
| References | |
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| Model "SI" Industrial Tractor published in 1955, by J.I. Case | 
| Page information | |
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| Peter Easterlund - owner/author | |
| Email: Peter@TractorData.com | |
| Updated on July 28, 2023 |