Twenty years ago Claas introduced the world’s first four-rotor swather, the Liner 3000 – it was a design concept that eliminated the swathing bottleneck for the following the forage harvesting convoy to be fully utilised. This increased the capacity of the entire harvesting chain and in just a single pass, it could swath crops over a working width of up to 12.5m. Now, the latest in that range, the Liner 4000 can channel 15.5m of grass into one row and increasingly has finger tip control from the can, thanks to its Isobus connection, while a sophisticated hydraulic folding mechanism is used to reduce its dimensions for road transport