Cutless bearings are specialized marine bearings typically used in the propeller shafts of boats and ships. They are known for their distinctive design, featuring a resilient rubber lining that is encased in a metal shell, often bronze or brass. This rubber lining is grooved to allow water to flow through, providing lubrication and cooling to the shaft as it rotates. The water-lubricated nature of cutless bearings makes them particularly suited for aquatic environments, as they can operate efficiently even when submerged. They are prized for their durability, low maintenance requirements, and ability to reduce friction and wear on the shaft, ensuring smooth and quiet operation. Additionally, cutless bearings are resistant to corrosion and marine growth, further enhancing their longevity and reliability in harsh maritime conditions.