This 1PCS guide shaft seat with optical axis bracket combines a round seat and a flat flange to provide a secure, precise mounting point for guide shafts and optical components along a defined axis. It is designed to accommodate a range of installation sizes and circular bores, making it suitable for multiple platforms and setups. Key benefits Improves alignment accuracy: the round seat and flat flange design help maintain a stable, repeatable optical axis during mounting and adjustment. Versatile installation options: supports a variety of installation sizes for broad compatibility with common components and fixtures. Simple, reliable construction: supplied as a single unit, reducing assembly steps and potential misalignment. Compact, unobtrusive footprint: designed to fit within tight optical and mechanical assemblies without obstructing neighboring components. Helps reduce mechanical play: provides a solid seating point for guide shafts to minimize wobble and deflection. Key attributes Functionality: guide shaft seating combined with an optical axis bracket, featuring a round seat and flat flange for secure mounting. Compatibility: available for multiple installation diameters, including 8, 10, 12, 15, 16, 20, 25, 30, 35, 40, and 50 mm, with a 12 mm circular bore option. Size options: supports a broad range of standard installation sizes to fit diverse setups. Material: not specified in the listing. Performance: designed to provide stable support for precise axis alignment in optical and mechanical assemblies. Applications and use cases Optical bench alignment: mount lenses, mirrors, or alignment fixtures along a precise axis in laboratory or research setups. Laser and fiber coupling: position and secure optical components for stable, repeatable laser alignment and coupling. Smallscale instrumentation and jig work: integrate into measurement rigs, CNC jigs, or micromachining assemblies where accurate axis alignment is critical. How to use Mount the flat flange to a base plate or fixture using appropriate screws through the flange holes. Insert or align the guide shaft into the circular seat as required for your setup. Adjust for precise axial alignment and secure to maintain stability during operation. Package Supplied as 1 piece.