BARRAS LISAS Ø 20 L. 400 (ZN)

Function and technical context

The smooth bars with a diameter of 20 mm and a length of 400 mm with a zinc (ZN) finish are structural support and guide elements used in steering, rudder and transmission systems of boats, as well as in trim and tilt mechanisms of outboard motors and stern outboards. The zinc coating provides galvanic protection against electrolytic corrosion, a particularly aggressive phenomenon in salt or brackish water environments. Its function is to guarantee the precise and play-free sliding of the associated moving components, ensuring the correct response of the steering system and the mechanical integrity of the assembly. Deterioration of these bars can result in excessive play in the steering, blockage of mechanisms or progressive damage to the bushings and bearings that house them.

When to replace this part?

The most common symptoms of wear on smooth guide bars include the appearance of noticeable looseness or play in the mechanisms that house them, irregular friction marks or grooves on the surface of the bar, and difficulty or abnormal resistance in the movement of the moving elements. It is recommended to visually inspect its condition during each seasonal maintenance, paying special attention to the sliding surface and the condition of the zinc coating, which can degrade due to prolonged exposure to marine environments. Preventive replacement at the first signs of surface wear or corrosion prevents major breakdowns in the steering or transmission mechanisms, the repair of which in navigation is significantly more expensive and complex.

Compatibility