Specs of agricultural tractor Ursus 2812/3512/4512/4514/4514 DL :
| Model | Ursus 2812 | Ursus 3512 | Ursus 4512 | Ursus 4514 | Ursus 4514 DL |
| Years of production | 84- | 84- | 88- | 88- | 92-98 |
| Engine model / type | 3250 | 3250 | 4390 | 4390 | 4390 |
| Number of cylinders / turbocharging | 3 | 3 | 4 | 4 | 4 |
| Engine displacement (cm3) | 2502 | 2502 | 3865 | 3865 | 3865 |
| Piston dimension / stroke (mm) | 91,44×127 | 91,44×127 | 98,4×127 | 98,4×127 | 98,4×127 |
| Maximum engine power (hp) / rpm | 38/2000 | 47/2250 | 60/2000 | 66/2000 | 72/2200 |
| Torque (Nm) / rpm | 132/1300 | 165/1300 | 232/1300 | 245/1400 | 261/1400 |
| Number of gears (front + rear) | 8+2 | 8+2 | 8+2 | 8+2 | 8+2 |
| Number of synchronized gears (front+rear) | – | – | – | – | – |
| Speed-Shift | – | – | – | – | – |
| Type of reverse | – | – | – | – | – |
| Driving speed (km/h) | 2,4-25,8 | 2,3-24,4 | 2,6-28,2 | 2,5-33,6 | 2,5-33,3 |
| Max Driving speed (km/h) | 36,9 | 36,9 | – | – | – |
| Hydraulic pump capacity (L/min) | 15 | 17 | 26 | 26 | 26 |
| 3-Point Hitch control | mech | mech | mech | mech | mech |
| 3-point hitch max load (kg) | 1330 | 1330 | 1900 | 1900 | 2200 |
| PTO speed (rpm) | 540 | 540 | 540 | 540/1000 | 540/1000 |
| Disc brake type (dry / wet) | mokry | mokry | mokry | mokry | mokry |
| Type of control of the braking system | hydr | hydr | hydr | hydr | hydr |
| Turning radius 2WD (m) | 7,7 | – | – | – | – |
| Turning radius 4WD (m) | 9 | 9 | – | – | – |
| Front wheel 2WD | 6,00-16 | 7,50-16 | 7,50-16 | – | – |
| Front wheel 4WD | 11,2-24 | 12,4-24 | – | – | – |
| Rear wheel 2WD | 12,4-32 | 12,4-32 | 13,6-36 | – | – |
| Rear wheel 4WD | 16,9-30 | 16,9-34 | – | – | – |
| 2WD total weight (kg) | 2060 | 2520 | 2980 | – | – |
| 4WD total weight (kg) | 3280 | 3405 | – | – | – |
| Total height with cabin (cm) | 224 | 230 | 253 | 258 | 258 |
| Total length (cm) | 326 | 340 | 378 | 378 | 378 |
| Total width (cm) | 193 | 208 | 222 | 230 | 230 |
| Fuel tank capacity (l) | 58 | 58 | 80 | 80 | 80 |
| Cabin sound level (dB) | 85 | 85 | 85 | – | – |
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The factory in Warsaw was founded in 1893 by a total of seven people. In 1930, due to the growing world crisis, the Ursus company found itself in a difficult situation, as a result of which it was nationalized. The first Ursus C-45 tractor was a copy of the German Lanz Bulldog tractor. One of the most popular models, the Ursus C-330, was manufactured in 1976.
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