Stainless Steel Support Rod, 250 mm Length
| Brand | Hanting (HT) |
|---|---|
| Model | HTP25 |
| Diameter | 38 mm |
| Length | 250 mm |
| Weight | 1.4 kg |
| Mounting Compatibility | Standard Optical Table (M6 or Ø1/4"-20 threaded holes) |
| Rotational Freedom | 360° continuous azimuthal adjustment |
| Material | AISI 304 stainless steel |
| Surface Finish | Passivated, non-magnetic, low-outgassing |
Overview
The Hanting HTP25 Stainless Steel Support Rod is a precision-engineered mechanical component designed for stable, vibration-damped vertical support in optical alignment systems. Constructed from AISI 304 stainless steel, it leverages a high stiffness-to-mass ratio to minimize resonant amplification under dynamic loading—critical for maintaining beam path stability in interferometric setups, laser cavity construction, and multi-axis optomechanical assemblies. Its 38 mm outer diameter enables direct clamping into standard optical table mounting posts or kinematic base plates without intermediate adapters, while the uninterrupted cylindrical geometry permits full 360° rotational positioning of attached mounts (e.g., mirror holders, lens tubes, or translation stages) without mechanical interference. Unlike aluminum or carbon-fiber alternatives, this rod provides superior dimensional stability across laboratory temperature fluctuations (±0.5 °C), negligible thermal drift (<0.8 µm/K axial expansion), and compatibility with ultra-high vacuum (UHV) environments when passivated per ASTM A967.
Key Features
- Optimized structural damping: High-density stainless steel core suppresses microvibrations transmitted from adjacent equipment or floor-borne noise—essential for sub-micron alignment repeatability.
- Thread-free cylindrical interface: Enables frictionless 360° angular repositioning of mounted components without loosening or retightening fasteners.
- Standardized mounting interface: Compatible with M6 tapped holes (common on Thorlabs, Newport, and Standa optical tables) and accepts Ø1/4″-20 or M6 retaining screws via integrated side ports.
- Corrosion- and oxidation-resistant surface: Electropolished and passivated per ASTM A967 Grade 2, ensuring long-term integrity in humid or chemically active lab environments.
- Non-magnetic composition: Meets ASTM F2052 requirements for magnetic permeability (µr < 1.01), suitable for MRI-adjacent optics, magneto-optic experiments, and electron microscopy sample staging.
Sample Compatibility & Compliance
The HTP25 rod is not a measurement device but a foundational mechanical element within ISO/IEC 17025-compliant optical alignment workflows. It conforms to mechanical tolerances defined in ISO 2768-mK (medium tolerance class for machined parts), with diameter tolerance ±0.02 mm and straightness deviation <0.05 mm over full length. Its material certification includes full traceability to mill test reports (MTRs) per EN 10204 3.1. The rod supports accessories compliant with DIN 3180 (optical mount interfaces) and is routinely deployed in setups adhering to ISO 10110-7 (surface imperfection specifications) and ISO 11146 (laser beam parameter measurements), where mechanical stability directly impacts measurement uncertainty budgets.
Software & Data Management
As a passive mechanical component, the HTP25 requires no firmware, drivers, or software integration. However, its dimensional consistency and repeatability are critical inputs in optical design simulations (e.g., Zemax OpticStudio, Code V, or FRED ray-tracing models), where accurate CAD representations—including thermal expansion coefficients, mass properties, and mounting constraint definitions—are used to predict system-level stability margins. Lab inventory management systems (e.g., LabVantage, Quartzy) may reference its part number (HTP25) and material specification (AISI 304) for audit-ready asset tracking under GLP/GMP-aligned procurement protocols.
Applications
- Vertical support for kinematic mirror mounts in Michelson or Mach–Zehnder interferometers.
- Base column for adjustable height lens positioners in collimation and focusing stations.
- Structural backbone in custom-built optical breadboards requiring modular, reconfigurable height extension.
- Vibration-isolated support for high-resolution spectroscopy detector housings or fiber launch assemblies.
- Alignment reference pillar in metrology-grade optical test benches used for wavefront sensor calibration (e.g., Shack–Hartmann or lateral shearing interferometers).
FAQ
Is the HTP25 compatible with Thorlabs’ post holders and cage systems?
Yes—the 38 mm diameter matches Thorlabs’ TR series post holders (e.g., TR38/M), and side-mounting threads accept standard 8-32 or M4 cap screws.
Can it be used in vacuum environments?
Yes—when electropolished and passivated, AISI 304 stainless steel exhibits outgassing rates below 1×10⁻⁹ Pa·m³/s·m² (per ASTM E595), qualifying it for UHV applications up to 10⁻⁷ mbar.
What is the maximum recommended load for static vertical loading?
At 250 mm unsupported length, the Euler buckling limit exceeds 120 kg under ideal boundary conditions; for precision alignment, we recommend ≤25 kg to maintain sub-arcsecond angular stability.
Does it include mounting hardware?
No—mounting screws and clamping collars are sold separately to allow user-specific torque and material selection (e.g., titanium fasteners for weight-sensitive setups).
