Duramax Cutless 400mm

The Duramax Cutless 400 mm is a cut‑less stern tube bearing designed for 400 mm shafts, featuring a nitrile rubber bearing element that operates without oil lubrication. The supplied category identifies it as Stern Tube Bearing, and it is normally installed in the stern tube or propulsion shaft line where it supports the rotating propeller shaft and maintains shaft alignment. In that role, its primary purpose is to carry radial shaft load while permitting low-friction rotation under the lubrication arrangement used by the vessel. Water-lubricated composite or rubber bearings and oil-lubricated metallic bearings differ in material and lubrication, but all require correct alignment, surface condition and running clearance. Within the supplied list, neighbouring variants are distinguished by their model designations and naming, while the source does not state further model-specific hardware differences. No additional performance, approval or construction detail is inferred from the model code beyond the information supplied in the source record. For exact ratings, dimensions, settings, capacities, materials and variant-specific limits, refer to the manufacturer documentation for the exact figure.