boat stern tube
CJR is able to manufacture sterntubes and shaft logs to suit a shaft diameter of up to 180mm.
A shaft log is a short version of a sterntube and usually has a flange to bolt it to a bulkhead. It can be supplied fully assembled with half bearing and shaft seal.
Manufactured from polyester or epoxy GRP, mild steel, aluminium or bronze these are supplied fully machined and where appropriate, fully assembled with bearing and shaft seal. Standard sized items can be supplied from stock
All GRP stern tube assemblies are manufactured in-house from marine grade GRP, designed to withstand saltwater conditions and will not delaminate.
Both sterntubes and shaft logs can be hydrostatically tested to meet IACS requirements.
Sterntubes are provided to suit glass in, weld in, and chockfast fitting solutions.
Our laser alignment tool can be used to achieve accurate alignment during installation.