Shoulder bolt for Lufkin RS1818H

The shoulder bolt AP67054 serves as a critical fastening component within the reverse clutch assembly of Lufkin RS1818H marine gear systems. This part features a precision-machined unthreaded section, known as the shoulder, which provides accurate alignment and a pivot point for internal clutch elements. By securing these components while allowing for controlled movement, the bolt ensures the mechanical integrity and proper operation of the transmission system during engagement and disengagement cycles.

This component is specifically engineered for fitment in the Lufkin RS1818H model. It is designed to maintain the necessary dimensional tolerances required for the assembly of transmission clutch elements, facilitating smooth operation under the load conditions typical of marine propulsion systems. Proper installation of this bolt is necessary to ensure the clutch functions as intended within the gear housing.

In heavy machinery and marine transmissions, shoulder bolts are used to join components that must pivot or rotate relative to one another. The shoulder diameter acts as a bearing surface, while the threaded portion provides the clamping force needed to hold the assembly together. These bolts are selected based on their ability to withstand shear forces and maintain alignment in high-torque environments.