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A make of a tractor or power unit pulled (but not PTO operated) metal-pronged double-roller aerator for decompacting synthetic surfaces. The rollers are connected by a chain and this helps the tines pry open the compacted infill without the severity of action that would occur from a mechanised or PTO driven roller aerator. There are 3 models, each with an operating depth of up to 35mm:
AR100: operating width of 1m; weight of 200kg; with a power need of >10hp.
AR150: operating width of 1.5m; weight of 450kg; with a power need of >20hp.
AR200: operating width of 2m; weight of 530kg; with a power need of >30hp.
They are manufactured by GKB Machines.