Unimog 30 Tractor

Manufacturer Unimog
Price -
Model 30
Equipment Type Truck-Type Tractors
Factory Gaggenau, Baden-Württemberg, Germany

NEBRASKA TRACTOR TEST 607 2

Description Diesel 6-speed 4WD/March 5 - 13, 1957/Link: Nebraska Tractor Test 607 file/Drawbar performance/Gear 2 used for power test./Gear 1C used for pull test.
Belt power (max) 28.43 hp/21.2 kW
Belt fuel use (max) 2.3 gal/hour/8.7 l/hour
Max power 25.02 hp/18.7 kW
Max pull 4,806 lbs/2180 kg

UNIMOG 30 POWER

Engine 30 hp/22.4 kW
Drawbar (tested) 25.02 hp/18.7 kW
Belt (tested) 28.43 hp/21.2 kW

ENGINE DETAIL

The Unimog 30 tractor, powered by the Mercedes-Benz OM636 diesel engine, is noted for its compact 1.8 L displacement and 30 hp output, making it suitable for diverse agricultural applications. Its oil-bath air cleaner promotes prolonged engine life, while the high compression ratio of 19:1 enhances fuel efficiency and torque, albeit at the potential risk of engine knocks in lower-grade fuels. With a moderate RPM of 2550, it balances power delivery and engine longevity, but users may need to consider coolant and oil capacities (13.8 qts and 7 qts respectively) for maintenance planning.

Description Mercedes-Benz OM636/diesel/4-cylinder/liquid-cooled vertical I-head
Displacement 107.8 ci/1.8 L
Bore/Stroke 2.950x3.9375 inches/75 x 100 mm
Power 30 hp/22.4 kW
Air cleaner oil bath
Compression 19:1
Rated RPM 2550
Starter volts 12
Oil capacity 7 qts/6.6 L
Coolant capacity 13.8 qts/13.1 L

UNIMOG 30 ENGINE

The Unimog 30, powered by a Mercedes-Benz 1.8L 4-cylinder diesel engine, offers a robust power-to-weight ratio suitable for various off-road applications. With a 10.88-gallon (41.2 L) fuel tank, it provides extended operational range, reducing downtime during tasks such as farming or utility maintenance. However, its limited engine displacement may result in lower torque compared to larger models, potentially impacting performance in heavy-duty applications.

Description Mercedes-Benz 1.8L 4-cyl diesel
Fuel tank 10.88 gal/41.2 L

TRANSMISSION

The Unimog 30 features an 8-speed forward and 2-speed reverse gearbox, providing versatility for various terrains and tasks. The dry disc clutch contributes to reduced slippage and improved durability, ideal for heavy-duty applications. However, operators may find gear shifting demands attention, especially in off-road conditions, requiring skilled handling to optimize performance.

Gears 8 forward and 2 reverse
Clutch dry disc

MECHANICAL

The Unimog 30's 4x4 4WD chassis provides superior traction and maneuverability in challenging terrains, making it ideal for agricultural and off-road applications. Its four-wheel hydraulic brake system enhances safety by offering reliable stopping power, though maintenance may be more complex compared to simpler systems. The 8-speed transmission allows for versatile speed control, but the operator must master gear selection for optimal performance in varying conditions.

Chassis 4x4 4WD
Brakes four-wheel hydraulic internal expanding shoe
Cab Open operator station or soft cab.
Transmission 8-speed

UNIMOG 30 TIRES

The Unimog 30 tractor features a standard tire size of 7.50x18 for both front and rear, which provides a balanced weight distribution and improved traction on various terrains. Its all-wheel drive capability enhances maneuverability and load-carrying capacity, particularly in off-road applications. However, the limited tire width may pose challenges in soft or muddy conditions, necessitating careful operation to prevent sinkage.

Ag front 7.50x18
Ag rear 7.50x18

DIMENSIONS

Wheelbase 67.7 inches/171 cm
Height 81 inches/205 cm
Operating weight 4,900 lbs/2222 kg
Ballasted weight 6,729 lbs/3052 kg
Front tread 50.7 to 59 inches/128 to 149 cm
Rear tread 50.7 to 59 inches/128 to 149 cm

DIMENSIONS & TIRES

The Unimog 30's wheelbase of 67.7 inches provides a good balance between stability and maneuverability, making it suitable for both on-road and off-road applications. Weighing 4,900 lbs enhances its traction and load-carrying ability, essential for diverse tasks like agriculture and utility work. However, the relatively narrow tire size (7.50x18) may limit performance in extremely soft terrain, necessitating careful consideration of soil conditions during operation.

Wheelbase 67.7 inches/171 cm
Weight 4,900 lbs/2222 kg
Front tire 7.50x18
Rear tire 7.50x18

BELT PULLEY

Diameter 12.4 inches/31 cm
Width 6.1 inches/15 cm
RPM 1080
Speed 3500 ft/min/1066.80 meters/min


Last Updated 2025-01-01
Stephen is a passionate tractor hobbyist with a deep-seated love for all things mechanized and agricultural. Growing up in a rural setting, he developed a fascination with these mighty machines that have played a crucial role in shaping the farming industry.

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