Torque-Arm® Hydroil® drives speed reducer shall be a hydraulically powered enclosed shaft mount type unit with a single or double reduction ratio. The reducer shall mount directly on the driven shaft and utilize an adjustable torque arm that attaches from the gear case to the support structure or foundation. The reducer shall be powered using a Hydroil® single stage vane type fluid motor. The reducer shall be provided with a cast iron SAE mounting flange adaptor and splined input shaft to allow an integral fit with the splined hydraulic motor shaft. Dodge® Torque-Arm® Hydroil® Speed Reducer, Double Reduction, Series: HSCXT425B, 25:1 Gear Ratio, 3 in Input, 3-7/16 in Output, 2072 RPM Input Maximum, 98.5 % Efficiency, Shaft Mounting, Cast Iron, Gray Painted, 18.44 in L x 15.31 in W x 10.38 in H Dimensions