Efficiency Reliability and Performance
PRM marine transmissions have established a world-wide reputation for quality, reliability and in-service performance, making them the ideal choice for pleasure, workboat and fishing vessel applications.
All PRM hydraulically operated gearboxes feature a twin countershaft design, which
enables full rated power to be transmitted in ahead or astern, with either left or right
When correctly matched to engine and propeller, every PRM unit will provide trouble-free operation for many years.
All parts are designed for maximum reliability over an extended service life
In addition, running gear components are carefully specified and machined to the highest quality standards to ensure quiet and smooth operation.
Purpose-designed for marine use, all standard version PRM gearboxes have output shafts
vertically offset from the crankshaft centreline. However, to cater for the installation
demands of the widest range of hulls, both the PRM260 and PRM750 are available with an in-line configuration, while down
angle options are offered on the PRM750 (8°) and PRM1000 (10°), excluding 4:1 ratio versions.
Hydraulically operated, adjustment-free multi-disc clutches ensure rapid response to operation of the control lever for good boat handling and manoeuvrability. All models are designed for use with proprietary single lever remote control operation systems.
Gear ratios and performance for all models except
& PRM120 are identical in both left and right hand propeller
configuration, making PRM units ideal choice for twin engine installations.
Propellers can be trailed indefinitely - for example, when sailing, under tow, or in
multi-engine installations where one or more engines is shut down.
Built for reliability and durability, PRM hydraulic gearboxes are equipped with a
"get you home" mechanical lock-up device. This additional safety feature
maintains the operating clutches in engagement so that the vessel can be brought
safely back to port in the unlikely event of hydraulic failure.
A world-wide network of distributors and authorised agents provides comprehensive after-sales support for all PRM marine gearboxes users, including servicing facilities and replacement parts availability. Copies of our current UK and overseas distributor lists are available on request.
All PRM marine gearboxes allow easy access to major components. In addition, service
items such as oil pumps and hydraulic control valves are conveniently mounted externally.
A range of clutched and direct drive power take-offs is available with SAE housings to power on board equipment such as pumps and winches.
The Newage trolling valve is also available as optional equipment on PRM260, 500, 750, 1000 and 1500 models, enabling propeller speeds to be varied from 1200 rev/min down to zero. This electronically-operated unit is fully inter-changeable with the standard control value and can be retrofitted in service.
All information given in this website is correct at the time of publication. However in the interests of technical progress, design specifications are subject to change without notice. Accordingly, data given herein should be regarded as a general guide only and does not form part of any contract. All goods are supplied in accordance with our standard terms and conditions of sale.
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