The lack of internal lubrication of the propeller is by far the most common cause of overload in reverse. This insufficiency can be located in the hub of the propeller or on the individual blades which must constantly rotate freely on their fixing pin.
No seizure should therefore be caused by the accumulation of dirt, anative for example, or antifouling.
Our propellers normally operate without maintenance between two annual fairings. However, the lubrication of those frequently used in waters very loaded with dirt or abrasive particles must be regularly checked, as found in the sandy bed of shallow rivers or on canals with many locks.
Those in waters rich in limestone or in coral regions may be subject to significant deposits.
It is important to regularly monitor these deposits to ensure that they do not affect the proper functioning of the propeller which depends largely on the low level of friction inside all moving parts.
Recent propellers are equipped with O-rings at the blade emplanture and although these seals are not visible, our tests have shown that they contribute greatly to retaining grease inside the blades.
The User Manual supplied with the propeller, also available via the Internet, describes in detail the operations and lubrication standards of each blade and hub.
In a perfect world, the propeller would not require any lubrication – but in reality the extremely aggressive environment in which all propellers are used, requires regular lubrication to maintain proper operation.