PRM1500
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PRM1500
Full hydraulic operation drop centre output shaft with two stage reduction gearing.
PRM1500 series marine transmissions are the ideal choice for pleasure and commercial craft applications with engines rated at up to 520 hp (390 kW).
They are available in both shallow and deep case form - corresponding to reduction ratios ranging from 1.22:1 to 3.0:1 and 3.12:1 to 4.9:1 respectively - and are supplied with integral SAE housings as standard.
All PRM1500 series transmissions feature a twin countershaft design compatible with left or right hand propeller rotations - making them equally suitable for both single or twin engine installations. In addition, the PRM1500's two-stage reduction gearing enables maximum input torque of 1500 Nm to be transmitted continuously in either direction at engine speeds of up to 2500 rev/min.
Operation is by a single lever compatible with proprietary remote control operating systems.
The need for special purpose automatic transmission fluid is eliminated by the use of engine oil specification lubricant.
Smooth drive engagement in both ahead and astern is achieved by a pressure modulated selection valve - ensuring outstanding boat handling and manoeuvrability.
PRM1500 units carry a Lloyd's approved published ratings and utilise maintenance-free oil-operated, self-adjusting multi-disc clutches for consistent reliability and in-service performance.
The gearcase is manufactured from high grade cast iron and is internally ribbed for extra rigidity and strength.
The oil pump, oil filter and hydraulic control valve on all PRM1500 models are mounted externally for easy access and servicing.
Two optional clutched power take-offs - compatible with SAE classification hydraulic pumps - are available to drive on-board machinery. Further ancillary equipment for PRM1500 gearboxes includes an oil pressure gauge, oil cooler kit and electrically operated control valve - incorporating a trolling valve facility that allows propeller speeds to be varied down to zero. This is fully inter-changeable with the standard control valve and can be retrofitted in service.
PRM1500