INDUSTRY COMPONENT

Granite Base Plate

Ultra-stable granite base plate for precision optical lens centering machines, providing vibration damping and thermal stability.

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Component Specifications

Definition
A precision-machined granite base plate serving as the foundational structural component in optical lens centering machines. Engineered from high-grade granite with exceptional dimensional stability, minimal thermal expansion, and superior vibration damping properties. Provides a geometrically stable reference plane for mounting optical components, ensuring micron-level accuracy during lens alignment and centering operations.
Working Principle
Utilizes granite's inherent properties of high density, low thermal conductivity, and excellent vibration absorption to create a stable reference platform. The rigid, non-metallic structure minimizes thermal distortion and mechanical resonance, maintaining precise alignment of optical elements despite environmental fluctuations and operational vibrations.
Materials
High-precision black granite (typically G603 or equivalent), density ≥2.6 g/cm³, water absorption ≤0.2%, compressive strength ≥200 MPa, surface flatness ≤5 μm/m, hardness ≥6 Mohs.
Technical Parameters
  • Flatness ≤0.005 mm/m
  • Dimensions Custom (typically 800x600x150 mm to 1500x1000x200 mm)
  • Load Capacity ≥500 kg
  • Natural Frequency ≥200 Hz
  • Surface Roughness Ra ≤0.8 μm
  • Anchor Hole Pattern M12 or M16 on 100mm grid
  • Thermal Expansion Coefficient 4-6 × 10⁻⁶/°C
Standards
ISO 8512-2, DIN 876, ISO 230-1

Industry Taxonomies & Aliases

Commonly used trade names and technical identifiers for Granite Base Plate.

granite base plate optical lens centering machine precision granite vibration damping base thermal stable platform lens alignment granite machine component optical manufacturing equipment Granite Base Plate in Computer, Electronic and Optical Product Manufacturing

Parent Products

This component is used in the following industrial products

Precision Optical Lens Centering Machine

Industrial machine for aligning optical lens optical axis with mechanical axis.

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Engineering Analysis

Risks & Mitigation
  • Thermal shock causing micro-cracks
  • Impact damage from dropped tools
  • Moisture absorption if surface sealant fails
  • Improper mounting causing stress concentration
  • Chemical contamination affecting surface properties
FMEA Triads
Trigger: Thermal gradient exceeding 2°C/hour
Failure: Micro-crack formation reducing structural integrity
Mitigation: Implement controlled environment with ±0.5°C stability; use thermal insulation during transport
Trigger: Improper anchor bolt torque
Failure: Stress concentration leading to fracture
Mitigation: Use calibrated torque wrenches; follow specified tightening sequence; install stress distribution plates
Trigger: Abrasive contamination during operation
Failure: Surface scratching affecting flatness
Mitigation: Implement clean room protocols; use protective covers when not in use; regular inspection

Industrial Ecosystem

Compatible With

Interchangeable Parts

Compliance & Inspection

Tolerance
Flatness: ≤0.005 mm/m, Parallelism: ≤0.01 mm, Surface Roughness: Ra ≤0.8 μm
Test Method
Laser interferometry per ISO 8512-2, Straightedge testing per DIN 876, Thermal stability testing per ISO 230-1

Buyer Feedback

★★★★☆ 4.8 / 5.0 (12 reviews)

"Testing the Granite Base Plate now; the technical reliability results are within 1% of the laboratory datasheet."

"Impressive build quality. Especially the technical reliability is very stable during long-term operation."

"As a professional in the Computer, Electronic and Optical Product Manufacturing sector, I confirm this Granite Base Plate meets all ISO standards."

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Frequently Asked Questions

Why use granite instead of steel for precision machine bases?

Granite offers superior vibration damping (3-5 times better than cast iron), minimal thermal expansion (1/3 of steel), and maintains dimensional stability without stress relief aging. It doesn't rust or corrode, and its natural frequency characteristics reduce resonance during high-speed operations.

How is the flatness of granite base plates achieved and maintained?

Through precision grinding and lapping processes using diamond abrasives, followed by laser interferometry verification. The non-porous surface is sealed to prevent moisture absorption, and regular calibration ensures flatness within 5 microns per meter over the operational lifespan.

What maintenance do granite base plates require?

Minimal maintenance: regular cleaning with isopropyl alcohol, protection from direct impact, and annual flatness verification. Avoid thermal shocks and chemical exposure. The non-metallic surface doesn't require rust prevention treatments.

Can I contact factories directly?

Yes, each factory profile provides direct contact information.

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