Claas self-propelled

**Technical Description:**
– Selbstfahrer is a self-propelled straw walker combine harvester.
– Offered with cutter bars of 2600mm, 3000mm, and 3600mm.
– Threshing drum width of 1250mm and diameter of 450mm.
– Four straw walkers with total length of 2400mm.
– Can harvest up to 4t of grain per hour.

**Weight and Propulsion:**
– Weight of 4710kg.
– Engine models: Perkins 4.270 diesel (44kW), Claas LD40 diesel (44kW), Unknown model Otto (41kW).
– First self-propelled combine harvester by Claas.
– Succeeded by Claas Matador Gigant.
– Offered with or without a straw baler.

**Target Market and Succession:**
– Targeted at agricultural contractors and large farms in Europe.
– 19,465 units produced from 1952 to 1963.
– Renamed to SF in 1953 due to trademark issue.
– Succeeded by Claas Matador in 1961.
– Kept in production until 1963.

**Hydraulic System and Transmission:**
– Cutter bars and reel adjustable vertically with hydraulic system.
– Three-speed gearbox with reverse gear.
– Hydraulically controlled continuously variable transmission (CVT).
– Front wheels are propelled, filled with air tires.
– Driving speed adjustable within three gears using CVT.

**Engine and Additional Features:**
– Standard engine: straight-six Otto engine producing 41kW.
– Straight-four diesel engine offered as a factory option.
– Engines used: Claas LD 40 (4.7L diesel) and Perkins 4.270 (4.4L diesel), both 44kW.
– Roof-mounted engine to prevent dust intake.
– Grain can be unloaded with an unloading pipe while harvesting.