| Manufacturer | Ursus |
| Price | - |
| Model | 4502 |
| Equipment Type | Orchard Vineyard Tractors |
| Factory | Warsaw, Poland |
URSUS 4502 POWER
| Engine | 59.1hp / 44.1kW |
| PTO (claimed) | 53.1hp / 39.6kW |
ENGINE DETAIL
The Ursus 4502 tractor features a 3.9L, 4-cylinder diesel engine that delivers a power output of 59.1 hp and a torque of 171.1 lb-ft at 1500 RPM, making it suitable for moderate agricultural tasks. Its oil bath air cleaner and direct injection fuel system enhance engine efficiency and reliability, while the glow plugs ensure cold-start performance in varying climates. However, with a rated RPM of 2000, operators may face limitations in high-speed tasks, and the coolant system requires careful maintenance, especially in cab-equipped versions that increase capacity requirements.
| Description | Ursus 4390 diesel 4-cylinder liquid-cooled |
| Displacement | 235.9ci / 3.9L |
| Bore/Stroke | 3.87x5.00inches / 98x 127mm |
| Power | 59.1hp / 44.1kW |
| Fuel system | direct injection |
| Air cleaner | oil bath |
| Pre-heating | glow plugs |
| Compression | 16:1 |
| Rated RPM | 2000 |
| Torque | 171.1lb-ft / 232.0Nm |
| Torque RPM | 1500 |
| Starter | electric |
| Starter volts | 12 |
| Starter power | 4hp / 3.0kW |
| Oil capacity | 7.4qts / 7.0L |
| Coolant capacity | 14.7qts / 13.9L 16.4qts / 15.5L *Capacity with cab heater. |
URSUS 4502 ENGINE
The Ursus 4502 features a robust 3.9L 4-cylinder diesel engine, providing a balance of power and fuel efficiency suitable for medium-duty agricultural tasks. Its compact design offers excellent maneuverability in tight spaces, though operators may find the power output lesser compared to larger models in heavy-duty applications. Ideal for small farming operations or specialized tasks, this tractor excels in versatility but might face challenges in high-demand scenarios requiring greater horsepower.
| Description | Ursus 3.9L 4-cyl diesel |
TRANSMISSIONS OVERVIEW
The Ursus 4502 tractor features an 8-speed transmission with the option for a 12-speed creeper gear, which enhances its versatility for various agricultural tasks, especially in challenging conditions requiring low-speed precision. The creeper gear allows for greater torque delivery at lower speeds, making it ideal for tasks such as plowing or tilling in tight spaces. However, the complexity of a multi-speed system may require more maintenance and operator training to maximize efficiency and minimize wear.
| Description | 8-speed/12-speed creeper |
TRANSMISSION 1
The Ursus 4502 tractor features a total of 8 forward and 2 reverse gears, providing versatile speed and torque options for various agricultural tasks. Its 305mm dry disc clutch ensures reliable performance, although it may require more frequent adjustments compared to hydraulic systems. The oil capacity of 44.4 quarts (42.0L) suggests adequate lubrication for extended operation, but operators should monitor oil levels regularly to prevent potential engine wear during intensive use.
| Gears | 8 forward and 2 reverse |
| Clutch | 305mm dry disc |
| Oil capacity | 44.4qts / 42.0L |
| Description | Four gears, plus reverse, in two ranges |
SPEEDS 1
| Description | With 14.9-24 rear tires |
TRANSMISSION 2
The Ursus 4502 tractor features a creeper transmission system, enabling farming tasks requiring low-speed operation with enhanced torque, essential for plowing or tilling. With 12 forward gears and 4 reverse, it offers versatility in various field conditions, allowing precise control during maneuvering. A potential challenge may arise in operator familiarity with the gear shifting, necessitating training to maximize its efficiency in demanding agricultural scenarios.
| Type | creeper |
| Gears | 12 forward and 4 reverse |
MECHANICAL
The Ursus 4502's 4x2 2WD chassis makes it suitable for light to moderate agricultural tasks but may struggle on uneven terrain compared to 4WD models. The mechanical rear differential lock enhances traction in challenging conditions, but the drum brakes may require more maintenance and offer less stopping power than hydraulic options. The 8-speed and 12-speed creeper transmission variants provide flexibility for various field operations, with the optional heated cab adding comfort during cold weather work.
| Chassis | 4x2 2WD |
| Differential lock | mechanical rear |
| Steering | power |
| Brakes | mechanical drum |
| Cab | Two-post ROPS. Cab optional with available heat |
| Transmissions | 8-speed 12-speed creeper |
CAPACITY
| Fuel | 21.1gal / 79.9L |
| Hydraulic system | 11.1gal / 42.0L |
| Steering | 1.9qts / 1.8L |
HYDRAULICS
| Capacity | 11.1gal / 42.0L |
| Pressure | 2321psi / 160.0bar |
| Pump flow | 6.9gpm / 26.1lpm |
| Steering cap. | 1.9qts / 1.8L |
TRACTOR HITCH
| Rear Type | II |
| Control | Position and draft control |
| Rear lift | 2932lbs / 1329kg |
POWER TAKE-OFF (PTO)
| Rear PTO | live |
| Rear RPM | 540 (1.375) |
| Engine RPM | 540@1686 |
URSUS 4502 TIRES
The Ursus 4502 tractor is equipped with standard agricultural tires, with front tires sized 6.50-16 and rear tires 12.4-28, offering a balance of traction and stability for fieldwork. The larger rear tire diameter enhances flotation and reduces soil compaction, benefiting crop health in softer ground conditions. However, narrower front tires may compromise steering agility on uneven terrain, necessitating careful maneuvering in tight spaces.
| Standard tires (ag) | Front: 6.50-16. Rear: 12.4-28 |
DIMENSIONS
| Wheelbase | 88.8inches / 225cm |
| Length | 148inches / 375cm |
| Width | 56.1inches / 142cm |
| Height (cab) | 99inches / 251cm |
| Weight | 4938lbs / 2239kg |
| Ballasted weight | 5535lbs / 2510kg |
| Clearance (rear axle) | 13.6inches / 34cm |
| Clearance (drawbar) | 11.4inches / 28cm |
| Front tread | 43.7inches / 110cm |
| Rear tread | 38.8inches / 98cm |
DIMENSIONS & TIRES
The Ursus 4502 tractor, with its 88.8-inch wheelbase and weight of 4,938 lbs, provides a stable platform for fieldwork, making it ideal for moderately demanding agricultural tasks. The front tires (6.50-16) ensure good maneuverability, while the rear tires (12.4-28) enhance traction for heavier loads or tilling. However, its weight may limit transportability on softer ground and affect fuel efficiency, necessitating careful consideration of the application and terrain when selecting this model.
| Wheelbase | 88.8inches / 225cm |
| Weight | 4938lbs / 2239kg |
| Front tire | 6.50-16 |
| Rear tire | 12.4-28 |
ELECTRICAL
| Charging system | alternator |
| Charging amps | 44 |
| Charging volts | 12 |
| Battery volts | 12 |
| Battery AH | 90 |