1 piece Open Type Fixed Ring Shaft Collar that also serves as an Optical Axis Limit Ring, Retaining Ring and Axle Sleeve Clamping Ring. Size 153413. This versatile collar provides multiple functions in a compact form, making it suitable for precise shaft positioning and axis control in a range of assemblies. Key benefits Easy slideon installation with an open gap design, allowing placement on the shaft without disassembly of adjacent parts. Delivers reliable axial positioning and acts as a limit for the optical axis to support repeatable alignment. Multifunctional by combining shaft collar, optical axis limit ring, retaining ring and axle sleeve clamp in one component, reducing part count. Compact and lightweight to minimize interference with surrounding components while maintaining strong clamping. Single piece construction helps reduce misalignment, wear, and assembly complexity. Key attributes Functionality: Open type fixed ring shaft collar with multiple roles (shaft positioning, optical axis limiting, retaining function, axle sleeve clamping). Size: 153413. Compatibility: Designed for shafts that match the 153413 sizing; verify fit with your system tolerances. Material: Not specified in the product title; refer to the product datasheet for material details. Performance: Offers secure axial hold and a defined axis travel limit to support accurate and stable operation. Use cases Use case 1: In a precision optical instrument, to fix the position of an objective or sensor along the shaft while providing a defined limit to prevent overtravel of the optical axis. Use case 2: In a small actuator or CNC component, to clamp an axle sleeve and prevent axial movement during motion, improving repeatability. Use case 3: In a compact mechanical assembly that requires a retaining function and sleeve clamping in a single part, reducing the need for multiple separate components.