Boat reduction gearbox PRM 1000 (1.528:1, 2.033:1, 2.857:1, 4.000:1 @3000 RPM)

engine

Full hydraulic operation: offset or down angle output shaft. The PRM1000 marine gearbox is purpose built for use in both pleasure craft and commercial boats; its twin countershaft design provides separate oil-operated multi-disc clutches (which need no adjustment) for ahead and astern drive allowing full rated power to be transmitted continuously in either direction. To cater for the widest possible variety of boats the PRM1000 is offered either with output shaft, offset or 10° down angle output shaft. Reduction ratios available are 1.53:1, 2.03:1, 2.86:1, and 4.00:1 (4.00:1 reduction is not available on down angle gearbox) all of which can provide either left-hand or right-hand propeller rotation in "ahead", making the gearbox particularly well suited to twin engine installations. The gearcase is constructed of high grade cast iron, internally ribbed for rigidity and strength, and consists of two separate halves to facilitate servicing, the oil pump and hydraulic control valves being externally mounted for easy accessibility.