HTDL50-X Manual Linear Translation Stage with Dual Dove-Tail Rails

Overview

The HTDL50-X is a precision-engineered manual linear translation stage designed for stable, repeatable, and low-backlash positional adjustment in optical alignment, interferometry, laser cavity construction, and micro-positioning applications. Its core mechanical architecture employs dual dovetail rails—a robust guiding system that significantly enhances lateral rigidity and load-bearing stability compared to single-rail or ball-bearing alternatives. The stage operates via a high-precision ground lead screw (pitch: 0.254 mm), delivering fine incremental motion control without slippage or hysteresis. Engineered for integration into multi-axis optical benches and modular lab setups, the HTDL50-X provides 50 mm of unidirectional travel with sub-micron repeatability under typical laboratory conditions—achievable through consistent torque application and proper mounting.

Key Features

• Dual dovetail rail system ensures high resistance to moment loading and minimizes pitch/yaw deviation during translation—critical for maintaining beam path integrity in collimated optical systems.
• Precision ground lead screw drive (0.254 mm pitch) offers deterministic displacement per revolution and eliminates backlash common in plastic or coarse-thread mechanisms.
• Standardized mounting pattern on both top and base plates (M4 and/or 1/4″-20 threaded holes, spaced at ISO 20 mm grid intervals) enables rapid integration with optical posts, kinematic mounts, and orthogonal stage assemblies.
• Top plate dimensions (100 × 62 mm) accommodate standard optical components including mirrors (up to Ø50 mm), lens holders, and fiber couplers, while supporting distributed loads up to 6 kg at the center of rotation.
• Compatible with HT-series right-angle brackets (e.g., HT-AB90), allowing vertical orientation without compromising mechanical stability or travel accuracy.
• Machined from high-grade anodized aluminum alloy, providing dimensional stability across ambient temperature fluctuations (15–30 °C) and resistance to oxidation in cleanroom-compatible environments.

Sample Compatibility & Compliance

The HTDL50-X is compatible with standard optical components used in university teaching labs, R&D photonics facilities, and industrial metrology workstations. It supports passive and active optical elements—including mirror mounts, translation-sensitive waveplates, photodetector carriers, and fiber alignment stages—without requiring custom adapters. While not certified to ISO 9001 or CE for medical or aerospace use, its mechanical design adheres to widely accepted dimensional and tolerance conventions in optical instrumentation (per ISO 10110-7 for surface form and ISO 1101 for geometric tolerancing). All threaded interfaces conform to ANSI B1.10M metric standards; no proprietary fasteners are required.

Software & Data Management

As a purely manual positioning device, the HTDL50-X does not incorporate electronic sensors, encoders, or digital interfaces. Consequently, it requires no firmware, driver installation, or software configuration. Position tracking relies on calibrated micrometer-style knurled knobs with engraved scale rings (0–50 mm, 0.1 mm graduation), enabling visual estimation of displacement. For traceable calibration workflows, users may integrate external position-sensing tools such as capacitive displacement sensors (e.g., Lion Precision C3, ±1 µm resolution) or laser interferometers (e.g., Keysight 5530 series) aligned parallel to the travel axis. Documentation includes dimensional drawings, torque specifications for mounting screws (0.5–0.7 N·m), and recommended preload procedures for optimal rail engagement.

Applications

• Alignment of laser cavities and resonator mirrors in undergraduate and graduate optics laboratories.
• Stepwise scanning of sample positions in confocal microscopy test rigs and optical coherence tomography (OCT) prototype systems.
• Coarse positioning of fiber collimators and free-space coupling optics prior to fine piezo-driven adjustment.
• Modular construction of XYZ stacks using orthogonal bracket kits—enabling reproducible setup of multi-degree-of-freedom optical paths.
• Calibration reference stage for verifying performance of motorized translation systems (e.g., Thorlabs LTS series, Zaber T-LSM).
• Stable platform for thermal expansion coefficient measurements when paired with linear variable differential transformers (LVDTs) or strain gauges.

FAQ

What is the maximum permissible load when mounted vertically?
When used with HT-AB90 right-angle brackets and properly torqued M4 mounting screws, the stage maintains full 6 kg central load capacity in vertical orientation—provided the base is rigidly fixed and vibration isolation is applied.
Can this stage be used in vacuum environments?
The standard anodized aluminum construction is suitable for dry nitrogen or air environments only; vacuum compatibility requires optional stainless steel hardware and vacuum-rated lubricants—not supplied by default.
Is there a version with metric or imperial fine-adjustment graduations?
The current model features metric-only scale engraving (0.1 mm increments); custom scale overlays with imperial equivalents (0.005″ divisions) can be ordered separately upon request.
Does the dovetail rail require periodic lubrication?
Yes—application of a light film of synthetic grease (e.g., Dow Corning 111) every 6 months or after 10,000 cycles is recommended to maintain smooth motion and prevent galling.
Are replacement lead screws available for this model?
Yes—genuine HT replacement lead screws (P/N HT-LD-0254-M4) are stocked and shipped with matching thrust bearings and retaining hardware.