1.BW5520 Gearbox for grass cutter 2.Ratio:1:1.25,1: ... RPM. 4.Weight:13.5KG 5.Light duty pulley type BW5520 gearbox is applied on finishing mowers, rotary cutters and rotary ... overall dimension in details, please refer to the following sketch: BW5520 Agricultural Gearbox for finishing mowers