R&D Marine Damper Drive Plates are designed to prevent gearbox rattle at low engine speeds, which allows an engine to operate through its entire RPM range. Today’s marine diesels are designed with lightweight flywheels which do not create the inertia of an older heavy flywheel. The lighter flywheels result in gear chatter or rattle at low RPM’s. This rattle translates into gear wear and damage to the drivetrain. Our damper plates eliminate this problem.
All R&D Damper Plates use a molded polyurethane element to absorb the engine torque. The fail safe design of the plate ensures that even in the unlikely event of a flexible element failure (from severe shock load), the drivetrain system would remain functional. The back plates for the R&D Marine damper plates are punched and ready to install. They can be installed within the existing space of a metal spring damper.
If the flexible element fails, the rivets on the spline plate will engage the rivets on the backing plate. This will allow the drive to be maintained in the unlikely event of an element failure.
The R&D Marine Damper Drive Plates reduce gear noise by preventing transmission rattle at low engine speed and allows the engine to run at lower speeds.
No springs to rust or fret. The flexible element is designed to withstand increased temperatures and are not affected by salt water, diesel and lubrication oils.
Damper Plates to fit most engine and gearbox combinations for engines up to 800 horsepower and torque range from 60 - 1,400 ft/lbs.
The R&D Marine Damper Drive Plate requires no machining and is ready to bolt to the flywheel.
Many marine engines are fitted with a spring type damper plate. Most spring plates only provide 3 degrees of deflection. Also, steel springs will tend to corrode in a marine environment.
The drive, or damper plate, as it is often called, bolts to the engine flywheel and connects the engine to the transmission / gearbox's splined shaft.
The R&D Marine Damper Plates use a special element and are designed to load at lower RPM's, and prevent the input spline from backlashing to reduce spline gear wear.
This element is designed for general use where motoring at low RPM's is common. Provides two stage dampening with up to 9 degrees of deflection. More torsionally flexible than the loop type, usually has smaller diameter element than our other designs but still retains the ability to be mounted either way round on the flywheel and rotate in either direction.
Suitable for workboats and pleasure boats where low RPM engine use is the norm or where gear noise is being experienced. A maximum deflection up to 30 degrees, slightly larger diameter element than other designs and can easily be fitted to rotate in the standard direction of rotation (counter-clockwise looking at the flywheel). With the element facing the gearbox.
We offer R&D Marine Damper Plates for these transmission manufacturers.
There are a few pieces of information you need to know in order to place an order. Information such as:
Engine: Make, model, max horsepower and max RPM?
Transmission: Make, model and number of teeth on input spline?
Backing Plate: Diameter, number of holes, pitch circle diameter? (PCD / 12:00 to 6:00, center of hole to center of hole)