Technical Specifications of the Ursus C-330 agricultural tractor:
Ursus C-330 is a Polish agricultural tractor produced from 1967 to 1987 in the Lublin factory. This model is equipped with an S-312-C engine with two cylinders, a displacement of 1960 cm³, and piston dimensions of 102×120 mm. The engine delivers a maximum power of 30 HP at 2200 RPM, generating a torque of 100 Nm at 1600 RPM. The Ursus C-330 gearbox consists of 6 forward gears and 2 reverse gears. The tractor’s top speed is 23.4 km/h, and the power take-off (PTO) speed is 540 RPM. The tractor has a mechanical braking system based on dry discs. The Ursus C-330 features a rear hitch lifting capacity of 700 kg, operated via a mechanical lever. The Ursus C-330 also offers compact dimensions: length 308 cm, width 187 cm, and height with cab 207 cm. The tractor weighs 1495 kg and is equipped with front tires sized 6.00-16 and rear tires sized 12.4-28. The fuel tank capacity is 35 liters. Although the Ursus C-330 has been superseded by more advanced models, its technical parameters, durability, and simplicity make it a significant part of Polish agricultural history. Below are detailed technical data for other models: Ursus C-325, Ursus C-328, Ursus C-330M, and Ursus C-335.
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Technical Data Sheet for Ursus C-330, C-328, C-325, C-330M, C-335 agricultural tractors:
| Model | Ursus C-325 | Ursus C-328 | Ursus C-330 | Ursus C-330M | Ursus C-335 |
|---|---|---|---|---|---|
| Years of production | 59-63 | 63-67 | 67-87 | 86-93 | 1966- |
| Engine designation/type | S-312 | S-312B | S-312-C | S-312-C | S-312-C |
| Number of cylinders / Turbo / Intercooler | 2 | 2 | 2 | 2 | 2 |
| Engine displacement (cm³) | 1800 | 1960 | 1960 | 1960 | 1960 |
| Piston diameter / Stroke (mm) | 98×120 | 102×120 | 102×120 | 102×120 | 102×120 |
| Maximum engine power (HP) / at RPM | 25/2000 | 28/2000 | 30/2200 | 30/2200 | 35/2200 |
| Torque (Nm) / at RPM | 95/1700 | 98/1700 | 100/1600 | 100/1600 | – |
| Number of gearbox speeds (forward + reverse) | 6+2 | 6+2 | 6+2 | 6+2 | 6+2 |
| Number of synchronized gears (forward + reverse) | – | – | – | – | – |
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| Fast gearbox / Power shift | – | – | – | – | – |
|---|---|---|---|---|---|
| Reverser type | – | – | – | – | – |
| Speed range (km/h) | 1,6-20,2 | 1,9-23,4 | 1,9-23,4 | 2,1-26,3 | 1,8-23,4 |
| Maximum speed (km/h) | – | – | – | – | – |
| Hydraulic pump capacity (L/min) | 18 | 18 | 18 | 20 | 16 |
| Rear three-point hitch (TUV) control type | mech | mech | mech | mech | mech |
| Maximum rear three-point hitch (TUV) lift capacity (kg) | 700 | 700 | 700 | 700 | 700 |
| Power take-off (PTO) speed (RPM) | 540 | 540 | 540/1000 | 540/1000 | 540/1000 |
| Type of disc brake (dry/wet) | – | – | – | – | – |
| Brake system control type | mech | mech | mech | mech | mech |
| Turning radius 2WD (m) | 6,4 | 6,4 | 6,6 | 6,6 | 6,6 |
| Turning radius 4WD (m) | – | – | – | – | – |
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| Front tire size 2WD | 6,00-16 | 6,00-16 | 6,00-16 | 6,00-16 | 6,00-16 |
|---|---|---|---|---|---|
| Front tire size 4WD | – | – | – | – | – |
| Rear tire size 2WD | 11,2-28 | 12,4-28 | 12,4-28 | 12,4-28 | 12,4-28 |
| Rear tire size 4WD | – | – | – | – | – |
| Total weight 2WD (kg) | 1460 | 1460 | 1495 | 1675 | 1495 |
| Total weight 4WD (kg) | – | – | – | – | – |
| Total height with cabin (cm) | 150 | 150 | 207 | 203 | 207 |
| Total length (cm) | 303 | 303 | 308 | 308 | 308 |
| Total width (cm) | 184 | 184 | 187 | 196 | 187 |
| Fuel tank capacity (L) | 35 | 35 | 35 | 35 | 35 |
| Cabin noise level (dB) | – | – | – | – | – |
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