SA4T/K M4 Male Thread Rod End Joint Bearing 4mm

The SA4T/K M4 Male Thread Rod End Joint Bearing (commonly known as a fisheye joint connector) is a high-precision mechanical component designed to facilitate smooth, multi-directional angular movement. Featuring an M4 external thread and a 4mm inner bore, this joint bearing is engineered to handle radial and axial loads while compensating for misalignment in dynamic linkages. Its robust construction ensures minimal backlash, making it an essential component for high-accuracy mechanical assemblies.

This rod end bearing is widely used in Delta-style 3D printers (such as Kossel builds), CNC machines, DIY robotics steering linkages, and RC models. It easily couples with standard M4 threaded rods or carbon fiber tubes, providing a reliable, low-friction pivot point. The self-lubricating design ensures maintenance-free operation and long-term durability under continuous cyclic motion.

Features:

• Premium Durability: Constructed with a zinc-plated carbon steel body and a hardened chrome steel ball for exceptional wear resistance.
• Self-Lubricating Design: Features a maintenance-free, self-lubricating liner that ensures smooth rotation and reduces friction.
• Standard M4 External Thread: Precision-cut M4 male thread allows for secure and straightforward integration with standard linkages.
• 4mm Precision Bore: Features a highly accurate 4mm inner ring diameter for snug fitment with mounting bolts or shafts.
• High Angular Alignment: Accommodates multi-axis rotation, making it perfect for complex mechanical linkages and steering systems.

Package Includes:

1 x SA4T/K M4 Male Thread Rod End Joint Bearing