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automatically like magic Mercedes-Benz farm tractor OE Jump to navigation Jump to search Mercedes Benz MB Diesel Tractor Type-OE 1928.jpg Diesel tractor OE (1928) in the Mercedes-Benz Museum
Agricultural tractor OE Manufacturer: Daimler Benz Sales designation: Agricultural tractor OE Production period: 1928-1931 Engines: Single cylinder diesel engine Standard tires: Steel, 1.30 m diameter maximum speed: 6.2-15 km / h Empty weight: 2560-3200 kg Previous model: Four-wheel diesel tractor BK Successor: none The Mercedes-Benz tractor OE was a tractor of the brand Mercedes-Benz , the Daimler-Benz in the spring of 1928 at the International Motor Show presented (IAA) in Berlin. He was offered from May of the same year. With a whole series of new technical details he facilitated the agricultural work.
contents 1 history 2 technology 3 application areas 4 prices and operating costs 5 road tractor version 6 literature 7 web links 8 individual proofs Genesis
Agricultural tractor OE As early as 1902, the Daimler-Motoren-Gesellschaft (DMG) in Berlin had received the first prize of the German Agricultural Society for its universal locomobile . The full arable fitness was of course only with the 1913 presented "engine plow model Daimler" achieved: The 6.6-ton articulated plow was not far away from the principle of the tractor with plow trailer, as he was to prevail in the 1920s. In 1921, DMG finally presented such a "five-meter-long, four-ton plow tractor".
After the merger of Benz & Cie. and the Daimler engine company to the Daimler Benz AG 1926 spoke then everything for the model of the former competitor. The decisive factor was the diesel engine which Carl Benz had already installed in a three-wheeled tractor in 1922. This tractor with a single, roller-like drive wheel of 1.40 meters in diameter had developed Benz immediately after the First World War, together with the Munich engine and tractor manufacturer Sendling and exhibited for the first time at the agricultural exhibition in Königsberg in 1922 and sold. The experiment with the crude oil engine [1]At first it was more about the practical testing of the pre-chamber diesel, one year before it was first installed in a truck. But the diesel tractor was a complete success.
Two more units followed before the diesel-powered Benz-Sendling pulley S6 went into production the following year. By 1925, the first hundred had been sold, and another 200 copies were coming. Overall, Benz Sendling was able to sell 1188 units of the three-wheeled draft horse until the early thirties.
The main reason for the single-wheel plow - or the very similar plow tractor from Daimler with two closely arranged rear wheels - was that in this way a differential gear could be saved. Very soon, however, it turned out that this preference was bought with a higher risk of tipping. Thus, Benz-Sendling also developed in 1923 the four-wheel diesel tractor BK, which was also available in a street version with solid rubber tires. He was the direct forerunner of the OE.
Benz-Sendling had last had its tractors manufactured by Komnick in East Prussia: the designation "BK" indicates that it is a Benz diesel engine on a Komnick chassis. The OE, on the other hand, was to be manufactured in Stuttgart-Untertürkheim .
The global economic crisis placed clear limits on the purchasing power of customers. The Daimler-Benz diesel engine promised low operating costs and thus to be successful. This caused the company in 1928 to send the OE against the domestic tractor manufacturers in the field. However, the hoped-for success did not come - as early as 1931 and after only about 100 built copies, the production of the tractor was discontinued.
Technology This article or section needs a revision . More details should be given on the discussion page. Please help improve it and then remove this marker. The tractor had a weight of about 2560 kg with an axle load distribution of 60% rear and 40% front. The performance of the single-cylinder diesel engine was 24, later 26 PSm at 800 / min. The engine was installed horizontally and transmitted via a built-in clutch in the left flywheel its power to a three-speed gearbox. The crankcase took on next to the engine nor the transmission, the power transmission and the final drive. The engine worked after the prechamber process. A decompression device facilitated the start of the diesel engine, which was started by means of a primer. The engine had a governor driven by the camshaft .
1.30 meters measured the rear wheels of the Mercedes-Benz diesel tractor in diameter. The flat-iron wheels were set with 14 diagonally arranged angular grippers. For peatlands, a broadening could be attached. As a road tractor, the OE was supplied with elastic or pneumatic tires, rear frosted twice. The length was 2.64 meters. Since the turning radius was only four meters, a differential was needed.
The front view of the OE consisted essentially of four parts: attached to the front of the gearbox single-cylinder engine, an overlying flat- rectangular container containing the cooling water and the fuel tank, and a towering on the right side air filter and the exhaust on the left. The low heat development of the diesel engine allowed the manufacturer to use instead of the usual, frovorsfälligen recirculation cooling evaporative cooling. For export to warmer countries, however, Daimler-Benz also offered circulation refrigeration.
The close connection of the engine and the transmission in a single, torsion-resistant housing benefited efficient and permanent pressure recirculation lubrication. Compared to a chain, pinion or worm drive also proved the direct power transmission from the transmission to the rear wheels by means of spur gears as very durable.
The farm tractor reached 3.2 in the first gear, 6.2 in the second and 6.2 km / h in the third.
Two large, easily removable maintenance flaps offered in case of need easily access to the dustproof gear housing. Equally simple was the change of the cylinder liner made of a special cast iron alloy with chromium and nickel additives, if it had worn out after many hours of work.
Application Areas The big drawback of earlier plows was that they were only suitable for the heavy work of plowing due to the firm connection of plow and drive. The universal tug OE did more: A PTO drive got mowers , potato harvesters, beet lifters and sorters going. In addition, a pulley with a speed of between 300 and 800 revolutions per minute could be mounted to drive stationary machines. In this way, the tractor also served as a drive for pumps, circular saws , threshing and chaffing machines, grinders or dynamos .
When deep plowing he worked on a ten-hour working day six to eight Prussian morning (about 1.5 - 2 ha), when plowing with two- to three-plow it was ten to twelve acres, while he peeling with five -shaped plow 20 to 25 acres reached. He ate up to 40 acres a day cultivating and harrowing .
Prices and Operating Costs When introduced, the tug cost 6600 Reichsmark - although Daimler-Benz lowered the price later to 5900 RM. Based on the year 1928, these sums correspond to purchasing power adjusted in today's currency approx. 23,900 or 23,200 euros. [2]
Between 20 Pfennig when cultivating and harrowing and 80 to 90 Pfennig when plowing the farmer had to calculate for the processing of a morning farmland. For the much lower price of the diesel oil was compared to the gasoline engine by 30 percent lower consumption, so that even with an annual capacity of 1200 operating hours, a saving of 1500 RM resulted.
Road Tractor Version
Road tractor OE In addition to the farm tractor, there was also a street tractor version. In this case, all-metal wheels with solid rubber or pneumatic tires took the place of the gripper wheels. The transmission received by changing two wheels a different translation. Depending on the trailer load, the towing vehicle managed 10.6 or 12.3, later up to 15 kilometers per hour. Here the customer could freely choose depending on the individual requirements: Normally the tug drew 15 tons on a level road in third gear, with larger loads or gradients the overall ratio could be changed accordingly.
The air filter was easier to run on the road tractor. A pulley for driving stationary machines was available at extra cost, as well as a winch in the rear, a hood with lateral weather protection and petroleum, carbide or electric lamps. Thanks to the maintenance flaps in the gearbox housing, the tractor could easily be retrofitted into a road vehicle if necessary: it was sufficient to change the four wheels and two gears of the gearbox. Later Daimler-Benz offered the tractor under the name "combination tugs" also with a double wheel set and gears to change from field to road operation.
At 3.2 tonnes, the road version weighed significantly more than the field version, especially due to the tires.
Literature Werner Schmeing, Hans-Jürgen Wischhof: Tractors of Daimler AG , DLG Verlag, Frankfurt am Main 2009, ISBN 978-3-7690-0733-6 , p 168ff. Wolfgang H. Gebhardt: German Tractors since 1907 . MotorBuch-Verlag Spezial, 1st edition 2006, ISBN 978-3-613-02620-9 Automobile and Motorbike Chronicle, Issue 12/77, p. 11, 12 and 32. Author: Jens Ostermann Web links Commons: Mercedes-Benz Ackerschlepper OE - collection of pictures, videos and audio files Wikibooks: Tractor lexicon: Mercedes-Benz diesel tractor OE - learning and teaching materials Single references Advertisement of the Mercedes-Benz Automobile Society mbH , Allgemeine Automobil-Zeitung, Vienna, March 1, 1930, Austrian National Library. The figures were calculated using the template: Inflation , rounded to 100 EUR and are valid for the previous January. Categories :Mercedes Benztractor model
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