10. Versatile 620DT
9. Big Bud 650/50
8. Fendt 1167 Vario MT
7. Rite 707
6. Big Bud 740
5. MeriCrusher MT-700
4. ACO 600 Oubaas
3. Rite 750 Earthquake
2. Big Bud 950/50
1. Big Bud 16V-747
World’s Top 10 biggest tractors
By Patrik Eder and Florentina Chiriță · January 13, 2022
Tractors are well-known heavy machines designed to deliver high tractive force at low speeds. Thanks to this ability, tractors are suitable for a wide range of agricultural or even construction works such as tillage, ploughing, harrowing, forestry applications or landscaping. The biggest tractors are equipped with powerful engines rated at hundreds of horsepower in order to provide enough force to haul large trailers and other heavy agricultural equipment/attachments. These machines are used on vast farming areas that measure hundreds up to thousands of square kilometres. Let’s have a look at the Top 10 biggest tractors rating based mainly on rated engine horsepower but also other factors such as dimensions and weight were taken into account. Please keep in mind that the majority of tractors that appear in the ranking are custom-made. Nevertheless, some of the machines such as Versatile, Fendt or MeriCrusher are commercially available.
1. Big Bud 16V-747 – 1100 hp (820 kW)
2. Big Bud 950/50 – 950 hp (710 kW)
3. Rite 750 Earthquake – 850 hp (625 kW)
4. ACO 600 Oubaas – 820 hp (612 kW)
5. MeriCrusher MT-700 – 768 hp (565 kW)
6. Big Bud 740 – 740 hp (544 kW)
7. Rite 707 – 700 hp (520 kW)
8. Fendt 1167 Vario MT – 673 hp (495 kW)
9. Big Bud 650/50 – 650 hp (488 kW)
10. Versatile 620DT – 620 hp (462 kW)
10. Versatile 620DT - Always on the right track
|Rated Engine Power||620 hp (462 kW)|
|Engine Type||Cummins QSX15|
|Tracks||30" Camso 6500 Tracks|
|Dimensions (L x W x H)||7874 mm x W x 3810 mm|
|Base Weight||27 t|
9. Big Bud 650/50 - A strong buddy for plowing
The 9th biggest tractor in the world is Big Bud 650/50. Big Bud Tractors was an American company based in Montana. The company, founded in 1968 as Northern Manufacturing Co., produced articulated tractors until 1992. The first 650/50 unit was constructed in 1981 and the company manufactured only 6 units in total. Supposedly, only 2 units are still operating in the US while the other 4 units have been exported to Australia years ago. The Big Bud 650/50 is powered by a 12-cylinder Detroit Diesel 12V-92 engine rated at 650 hp and weighs approximately 27.2 tonnes. The video below shows the 650/50 plowing with the 21-bottom DMI plow – the biggest moldboard plow ever made, built in 1978.
|Rated Engine Power||650 hp (484 kW)|
|Engine Type||Detroit Diesel 12V-92|
|Base Weight||27.2 t|
8. Fendt 1167 Vario MT - A power sensation
|Rated Engine Power||673 hp (495 kW)|
|Engine Type||MAN D4276|
|Tracks||27.5" Standard AG Tracks|
|Dimensions (L x W x H)||7874 mm x 3241 mm x 3810 mm|
|Base Weight||18.8 t|
7. Rite 707 - American heritage
|Rated Engine Power||700 hp (520 kW)|
|Engine Type||Detroit Diesel|
6. Big Bud 740 - Huge and powerful
|Rated Engine Power||740 hp (544 kW)|
|Engine Type||Komatsu 23.2L 6-cyl diesel|
|Tires||150 cm in diameter (5′)|
|Tank Capacity||2,650 l|
|Base Weight||34.02 t|
5. MeriCrusher MT-700 - One of the the greatest crawler tractors on the market
|Rated Engine Power||768 hp (565 kW)|
|Engine Type||VOLVO TAD 1643 VE|
|Tracks||Twin Rubber Tracks|
|Dimensions (L x W x H)||5870mm x 4550mm x 3770mm|
|Base Weight||22.5 t|
4. ACO 600 Oubaas - Africa’s biggest tractor
|Rated Engine Power||820 hp (612 kW)|
|Engine Type||ADE 444TI V12|
|Base Weight||25 t|
3. Rite 750 Earthquake - The farm tractor that shakes the ground
Number 3 on our podium, the American Rite 750 Earthquake tractor is another successful model built by Dave and John Curtis that owned Rite Tractors. This specific model, which can be seen today at farm shows in the United States, is one of the biggest agricultural tractors from the total of 38 that D.L. Curtis Co. has built since 1973. The number 750 inside of the name comes from the number of horsepower that this model initially had. The tractor later received a booster, a re-worked 850 hp (630 kW) Detroit Diesel engine and was nicknamed Earthquake to express how performant it was. By 2009, all 38 Rite tractors had been built with a variety of engines from Cummins, Caterpillar and Detroit Diesel to suit customers preferences, and in 2013 they could still be ordered by clients from all over the world.
|Rated Engine Power||850 hp (625 kW)|
|Engine Type||12V92 Detroit Diesel|
|Dimensions (L x W x H)||9144 mm x 5486 mm x 4267 mm|
|Base Weight||31.52 t|
2. Big Bud 950/50 - Another Big Bud that takes the stage
|Rated Engine Power||950 hp (710 kW)|
|Engine Type||CAT 3508|
|Tires||Goodyear DT930 1100/45R46|
|Base Weight||Around 40 t|
1. Big Bud 16V-747 - World’s Largest Farm Tractor
It comes as no surprise that the biggest tractor in the world is from the Big Bud Family. The largest from all the Big Bud’s built to this day, the Big Bud 16V-747 custom-made farm tractor was constructed in 1977, in Havre, Montana and is famous across the globe thanks to its amazing features: it weighs around 50 tons, twice the size of many of the largest production tractors in the world, has a 1,000 gallon (3.8 m³) fuel tank, and delivers up to 1.100 hp to do all the necessary hard work on the roughest fields. The tractor was built by Ron Harmon and the crew of the Northern Manufacturing Company and it featured a 16-cylinder Detroit Diesel engine that produced 760 horsepower. It was originally designed for the Rossi Brothers, cotton farmers in Bakersfield, California, who used the tractor for deep ripping for 11 years. The second owners, Willowbrook Farms, also used the tractor for deep ripping purposes. Today, Big Bud 16V-747 can be seen in Montana, only 60 miles from where it was originally manufactured. It is owned by the Williams Brothers that purchased the tractor in 1997 and brought it to their farm in Chouteau County, where they use it for cultivation purposes.
|Rated Engine Power||1100 hp (820 kW)|
|Engine Type||Detroit Diesel 16V92T|
|Dimensions (L x W x H)||8690 mm x 7700 mm x 4300 mm|
|Base Weight||Around 50 (up to 68t fully ballasted)|
World’s biggest tractors FAQ
What is the biggest tractor in the world?
Constructed in 1977, the Big Bud 16V-747 holds the title of the biggest tractor in the world. It is powered by a Detroit Diesel 16V92T engine rated at 1100 hp! The custom-made tractor is currently in usage in Montana, United States of America.
What is the world's largest farm tractor?
The largest farm tractor is Big Bud 16V-747 with a base weight of 50 tons. Fully ballasted weight can reach up to 68 tons. Its length is 8.69 metres at the end of the drawbar, width 7.7 metres over dual wheels and height 4.3 metres.
How much does a big bud 747 cost?
The original price for the Big Bud 747 sold in 1977 was $300,000. Taking into account today’s inflation, its current price could be around $1,300,000. Nevertheless, it is difficult to estimate the exact price of the custom-made tractor.
How many big bud 747 were made?
The custom-made model Big Bud was constructed in Havre, Montana in 1977 and is the only one of its kind.
Are Big Bud tractors still made?
The last Big Bud tractor was manufactured in 1992 and shortly after, the company went bankrupt due to financial issues caused by lack of customers and the decline of agriculture in the United States.
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