Claas self-propelled

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Claas Brothers Maschinenfabrik
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Self-drive
Manufacturer: Claas
Sales designation: Hercules (until 1953)
self-propelled type SF55 (from 1953)
Production period: 1952-1963
Engines: Perkins 4,270 (diesel, 4420 cm 3 , 44 kW)

Claas LD 40 (diesel, 4700 cm 3 , 44 kW)

Otto engine, (41 kW)
Length: 7,320 mm
Width: 2,950 mm
Height: 3,800 mm
Wheelbase: 3,200 mm
Gauge: 2,200 mm
1,150 mm
Standard tires: 13-26 AS
8.50-12 AM
Separation system: Horde shaker
Threshing system: Tangential
Cutting width: 2.6-3.6 m
Threshed material unloading: in sacks / from grain tank with discharge pipe
Grain tank volume: approx. 1.2 m 3
Top speed: 19 km / h
Dimensions: 4,710 kg
Previous model: none
Successor: Claas Matador Gigant

The self-propelled is the first self-propelled combine harvester from Claas ; it was built a total of 19,465 times between 1952 and 1963. Originally the thresher was called Hercules ; however, this name was already used, so that it was renamed SF for self-propelled vehicles as early as 1953 . In contemporary brochures it was marketed as the Claas self-propelled type SF55 . The SF was developed for the European market and aimed at contractors and large farms. From 1961 the self-propelled vehicle was replaced by the Matador .

technology

The self-propelled harvester is a self-propelled straw walker combine. A cutting unit with a width of 2600 mm was offered on the German market, and a 3000 mm wide and a 3600 mm wide cutting unit on foreign markets. The height of the cutting unit is hydraulically adjustable and has a pick-up reel that is also hydraulically height-adjustable . It is designed for the mowing of stored crop . A pick-up device for swath threshing can also be attached to the cutter bar. The SF can also be used for standing threshing.

The threshing drum with six beater bars has a width of 1,250 mm and a diameter of 450 mm, its speed can be continuously adjusted hydraulically between 650 min −1 and 1,400 min −1 . The concave is equipped with a so-called torque adjustment, which regulates the distance between the threshing drum and the concave. The self-propelled machine has four rack shakers with a total width of 1,250 mm and a total length of 2,400 mm. The grain is cleaned twice by 920 mm × 1070 mm sieves and conveyed via the elevator to the roof to the sorting cylinder, where it is sorted into three quality classes. Additional sieves for special types of fruit were also available on request.

As standard, the grain is filled into sacks with a bagging device , which can either be set down in the field by the self-propelled vehicle or loaded onto a trailer using a chute. 15 to 20 bags of 50 kg (0.75–1 t of grain) can be transported on the roof of the thresher. Alternatively, instead of the bagging device, a discharge pipe was available, with which the grain, as is common today with combine harvesters, can be discharged into a trailer while driving. On request, the self-propelled machine was also available with a grain tank that can hold up to 1,100 kg of grain at an additional cost. The hourly output should be up to 4,000 kg of grain.

The straw that remains after threshing is pressed by a straw press, on request the thresher was also available without a straw press.

The self-propelled vehicle has a three-speed gearbox with a separate reverse gear, to which the drive power from the engine is transmitted via a dry single-plate clutch . With a hydraulically operated V-belt variator, the driving speed can be continuously regulated between 0 and about 19 km / h at full engine speed. Only the front wheels are driven; the tires on all wheels are inflated. As standard, the engine is an air-cooled six-cylinder petrol engine with an output of 56 hp (approx. 41 kW); it is built on the roof and therefore outside the dust zone. An air-cooled four-cylinder diesel engine was also available on request at an additional cost. Claas used type LD 40 with 4.7 l displacement and Perkins among others the type 4.270 with 4.4 l displacement. Both engines have an output of 60 hp (approx. 44 kW). The SF has two work lights as standard.

source

literature

  • Jürgen Hummel, Alexander Oertle, Jan Sternberg, Peter Felser: Combine harvesters: history and technology . wk & f Kommunikation, Kempten 2008, ISBN 978-3-89880-417-2 , p. 39 .

Individual evidence

  1. ↑ Claas SF combine harvester from 1956 - historic agricultural machinery Diedenbergen
  2. ↑ a b Claas combine harvester history ( Memento from September 11, 2016 in the Internet Archive )
  3. ↑ prospectus p. 1
  4. ↑ prospectus p. 2