YANRUN CD-60 Magnetic Base for Optical Alignment

Overview

The YANRUN CD-60 Magnetic Base is a precision-engineered optical mounting accessory designed for stable, repeatable positioning of reflective components—particularly front-surface mirrors—in high-accuracy optical alignment systems. It functions as a rigid, non-permanent mechanical interface between ferromagnetic work surfaces (e.g., steel optical tables, machine tool beds, or calibration fixtures) and optical elements used in autocollimation setups. The base operates on the principle of controlled permanent magnetism: its internal neodymium-based magnetic circuit delivers consistent holding force without requiring external power, vacuum, or mechanical clamping. This enables rapid repositioning while maintaining sub-millimeter lateral stability and angular repeatability under typical laboratory vibration conditions. Unlike adhesive or screw-mounted alternatives, the CD-60 eliminates surface damage risk and supports iterative alignment workflows common in metrology labs, laser cavity setup, and interferometric system commissioning.

Key Features

• High-strength rare-earth magnet assembly with manual on/off toggle lever for immediate engagement/disengagement
• Flat, ground stainless-steel contact surface (Ra ≤ 0.8 µm) ensuring uniform magnetic flux distribution and minimal tilt error
• Integrated 1/4″-20 UNC threaded stud (M6 optional) for direct attachment to standard mirror mounts, kinematic bases, or custom adapters
• Compact footprint (60 mm diameter × 25 mm height) optimized for space-constrained optical benches and portable alignment kits
• Non-marring black oxide finish providing corrosion resistance and low optical reflectivity to minimize stray light interference
• Rated holding force ≥ 120 N on clean, flat, low-carbon steel surfaces (per ASTM F2679 test protocol)

Sample Compatibility & Compliance

The CD-60 is compatible with all front-surface mirrors, retroreflectors, and beam-steering optics mounted via standard post holders or kinematic platforms. It requires a minimum substrate thickness of 8 mm and surface hardness ≥ 120 HB for optimal magnetic coupling. The base complies with ISO 10110-7 (optical element mounting interfaces) dimensional tolerances and meets RoHS 2011/65/EU material restrictions. While not classified as a medical or safety-critical device, its mechanical design adheres to ISO 14001-aligned manufacturing practices at the Shanghai production facility. No CE marking is required for this passive mechanical component under EU Machinery Directive 2006/42/EC.

Software & Data Management

As a purely mechanical mounting solution, the CD-60 does not incorporate electronics, sensors, or firmware. It requires no driver installation, calibration software, or data logging integration. Its performance is verified through physical metrology: users may document positional repeatability using digital inclinometers (e.g., WYLER Level 0.001° resolution) or laser tracker measurements traceable to NIST standards. For GLP/GMP environments, mounting location coordinates and engagement torque values can be recorded manually in lab notebooks or LIMS-compatible spreadsheets; no 21 CFR Part 11 electronic signature functionality applies.

Applications

• Primary mirror support in autocollimator-based angular measurement systems (e.g., alignment of telescope optical axes or CNC machine tool spindles)
• Temporary mounting of reference flats during interferometric flatness verification per ISO 10110-5
• Beam path stabilization in educational optics labs where frequent reconfiguration is required
• Fixture integration in automated vision inspection stations needing rapid optic swap capability
• Field-deployable alignment aid for laser leveling in civil engineering surveying applications

FAQ

Is the CD-60 suitable for use on stainless steel surfaces?
Yes—but only on ferritic or martensitic grades (e.g., AISI 430, 410). Austenitic stainless steels (e.g., 304, 316) are non-magnetic and will not provide adequate holding force.
Can the magnetic field interfere with nearby electronic instruments?
No measurable interference occurs beyond 50 mm; however, sensitive devices such as electron microscopes or Hall effect sensors should maintain ≥100 mm separation per IEC 61000-4-8 guidelines.
What is the maximum operating temperature range?
–10 °C to +80 °C continuous duty; above 80 °C, irreversible demagnetization may occur.
Does YANRUN provide mounting templates or CAD models?
Yes—STEP and IGES format 3D models are available upon request from technical support for integration into optical design software (Zemax OpticStudio, CODE V, LightTools).
Is recalibration required after repeated use?
No. The magnetic circuit is solid-state with no wear-prone moving parts; long-term force retention is verified at >98% after 10,000 engagement cycles per manufacturer accelerated life testing.