COMPOSITE SHAFT WITH CORE INSERT

摘要

The disclosure provides an improved shaft design. The design includes an elongated annular shaft body, having an outer surface and defining a hollow cavity, and a core insert disposed in the hollow cavity. The shaft body has one or more radial flow ports that align with at least one fluid conduit in the insert. A pin couples the insert to the shaft body to prevent rotation of the insert relative to the shaft body. The shaft and the insert can be of different materials, for example, such that the density of the insert is less than that of the shaft body.

主权项

1. A composite shaft, comprising:
an elongated annular shaft body having an outer surface and defining a hollow cavity, the shaft body having at least one fluid port formed therein; and an insert disposed within the hollow cavity and having at least one fluid conduit aligned with the at least one fluid port; wherein the shaft body has a first density and the insert has a second density less than the first density.