Bearings allow moving or rotating parts to move or rotate smoothly by reducing friction. It is a pump, fan, conveyor, winch, crane, vehicle, hard disk, or anything with a moving or rotating portion, typically a shaft, to move or rotate freely. An inner and outer race like a cage to hold the balls make up a ball bearing. Volvo Penta (181105) Ball Bearings are comprised of a composite material that is well-suited for low- to moderate load applications. Use Volvo Penta ball bearings for high-load applications. Key Features: Ball bearings are appropriate for angular contacts because they can carry thrust and radial stresses. Ball bearings can easily be stacked in tandem or a back-to-back arrangement to increase their thrust load carrying capacity. Ball bearings' limited width allows them to fit into housings, resulting in a shorter shaft and bearing combination with smaller shaft deflections. Specifications: SKU: 181105 Weight: 0.33 LBS Diagram Reference Number: 47 Manufacturer Part Number (MPN): 181105 Volvo Penta Exploded view / schematic Friction clutch