High-Precision Rotary Encoder Wheel

Name: Encoder Disk for Industrial Motion Feedback Systems – Frigate
Price: 249.00 USD
Availability: InStock

High-Precision Rotary Encoder Wheel geometry maintains radial and axial runout below 5 µm TIR, essential for minimizing positional deviation in high-speed rotary systems. Precision-ground outer diameters and laser-aligned index markings ensure minimal mechanical eccentricity, allowing accurate interpolation across full revolutions.

Material Composition

Aluminum Alloy (6061-T6), Stainless Steel (17-4PH), Invar (for thermal stability), or Glass (for optical encoders)

Dimensional Accuracy

OD – ±2 µm, ID – ±1 µm, Thickness – ±5 µm (for <100mm diameter)

Concentricity/Runout

Total Runout ≤ 5 µm (dynamic), ≤ 2 µm (static)

Grating/Pattern Resolution

500–10,000 lines/inch (20–400 lines/mm), or 1,024–65,536 PPR (digital encoders)

Surface Roughness

Patterned Surface – Ra ≤ 0.1 µm (optical), Rz ≤ 0.5 µm (metallic)

Product Description

High-Precision Rotary Encoder Wheel substrates are fabricated from low-CTE materials such as fused silica and borosilicate glass, enabling dimensional consistency during thermal cycling. These materials exhibit high modulus and low hygroscopic expansion, preventing structural warping under continuous rotational stress.

Optical Properties

Transmittance ≥ 90% (glass), Reflectance ≥ 85% (metallic, at working wavelength)

Hardness

80-85 HRB (Aluminum), 40-45 HRC (Stainless Steel), 500-600 HV (Glass coatings)

Flatness/Parallelism

≤ 5 µm/m (for metallic), ≤ 2 µm/m (for glass/ceramic)

Burr-Free Requirements

Max Burr Height ≤ 1 µm (laser-cut edges), No visible burrs (microscopic inspection)

Certification Standard

ISO 9001, DIN 862 (optical encoders), IEC 60068 (environmental testing), RoHS compliant

Technical Advantages

High-Precision Rotary Encoder Wheel photolithographic tracks are defined at resolutions exceeding 65,000 CPR, with edge placement accuracy under ±0.5 µm. The wheel surface supports low-noise optical contrast, with high line-edge definition ensuring minimal phase jitter in optical sensor feedback systems.

High-Precision Rotary Encoder Wheel bore interfaces are machined to IT5 tolerance classes with optional clamping features or concentric locating shoulders. This reduces shaft misalignment and eliminates cumulative mounting errors, critical for maintaining encoder linearity in direct-drive systems.

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Industry Applications

Semiconductor Wafer Handling Systems

Enables sub-micron angular positioning of robotic wafer arms, ensuring accurate die alignment during photolithography and etching operations.

Robotic Joint Position Feedback

Provides high-resolution angular data for closed-loop motion control in multi-axis robotic arms operating under dynamic load and velocity changes.

Aerospace Actuator Control Systems

Delivers reliable rotational feedback in flight-critical servo actuators exposed to thermal gradients, vibration, and rapid acceleration profiles.

CNC Rotary Table and Spindle Feedback

Maintains precise angular indexing for high-speed rotary tables, ensuring toolpath synchronization in multi-axis CNC machining environments.

Medical Imaging Gantry Systems

Supports accurate rotational tracking of CT or PET gantries, facilitating consistent image registration during high-resolution diagnostic scans.

Autonomous Vehicle Lidar Positioning

Tracks high-speed rotational elements in lidar units, allowing spatial coherence and uniform data acquisition during vehicle navigation cycles.

Surface Reflectivity and Signal Integrity

High-Precision Rotary Encoder Wheel surfaces incorporate anti-reflective or light-diffusing coatings tailored for specific sensor wavelengths. These coatings control unwanted signal reflections and ensure consistent photodetector performance, even under high ambient light or fluid contamination.

High-Precision Rotary Encoder Wheel mass distribution is controlled through symmetric pattern design and secondary dynamic balancing procedures. This minimizes centrifugal-induced displacement at high rotational velocities, supporting stable readings at speeds up to 30,000 RPM.

Having Doubts? Our FAQ

Check all our Frequently Asked Question

How does Frigate ensure repeatable accuracy in High-Precision Rotary Encoder Wheels across multiple production batches?

Frigate uses precision lithography and CNC machining with strict SPC (Statistical Process Control) for dimensional conformity. All encoder wheels are verified using coordinate metrology systems with sub-micron resolution. Calibration masters are traceable to national standards to avoid batch-to-batch variation. This ensures each encoder wheel delivers identical performance within ±1 µm track accuracy.

What design options does Frigate offer for encoder wheels used in high-speed rotating systems?

Frigate provides dynamically balanced encoder wheels for rotational stability at speeds up to 30,000 RPM. Wheel mass distribution and edge symmetry are optimized using FEM (Finite Element Modeling). Optional damping slots and hubless designs reduce torsional resonance. These features make the wheels ideal for turbomachinery and high-speed spindles.

How does Frigate address differential thermal expansion between the shaft and encoder wheel?

Frigate selects substrate materials with matched CTEs (Coefficient of Thermal Expansion) or offers flexure-mounted designs to decouple thermal stress. This prevents distortion when temperature changes occur during system operation. Bore diameters are tolerance-matched to shaft material behavior under load. The result is preserved concentricity and long-term signal stability.

Can Frigate provide encoder wheels suitable for corrosive or particle-sensitive environments?

Yes, Frigate manufactures High-Precision Rotary Encoder Wheels using chemically inert substrates and hermetically sealed coatings. These wheels resist degradation from solvent vapors, oil mists, or fine particulates. Cleanroom-compatible handling and packaging ensure Class 10 compliance. Options for sputtered chrome and vacuum-bonded optics are available for extreme environment

What inspection standards does Frigate follow for verifying encoder wheel flatness and pattern integrity?

Frigate performs interferometric flatness checks and high-magnification optical inspection to validate pattern fidelity. Each encoder wheel undergoes verification against ISO 10110 standards for optical elements. Line edge placement, contrast ratio, and track width variation are digitally recorded. This guarantees optical readability and consistent signal timing during operation.

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LOCATIONS

Registered Office

10-A, First Floor, V.V Complex, Prakash Nagar, Thiruverumbur, Trichy-620013, Tamil Nadu, India.

Operations Office

9/1, Poonthottam Nagar, Ramanandha Nagar, Saravanampatti, Coimbatore-641035, Tamil Nadu, India. ㅤ

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