The ER4 is a Cage Assembly Rod, 4 inches long, with an internal bore diameter of 6 mm, sourced from the renowned optical component manufacturer, Thorlabs. This rod is meticulously crafted from stainless steel, a material known for its exceptional strength and durability, making it an ideal choice for various optical applications.
The ER4 rod is designed to be compatible with cage systems of two different sizes: 30 mm and 60 mm. This versatility allows it to be integrated into a wide range of optical setups, providing flexibility and convenience to the user. The total length of the rod is 101.6 mm, offering a substantial length for secure mounting and alignment of optical components.
The rod features 4-40 post mounting screws, ensuring a firm and stable connection with other optical elements. The weblink provided leads to the product page on Thorlabs' official website, where users can find more detailed information, including pricing and availability. The included step file (ER4-Step) provides a 3D model for visual reference, aiding in the understanding and application of this component.