Precision Ceramic  Manufacturers, Traders, Suppliers

oxide ceramics:
AluminaAl2O3 99.7%

• High temperature application 1700°C, electrical insulator, thin-wall construction, chem. resistant, good thermal conductivity, gas tight
• Application areas:
• Wear component, furnace heating coil support, wire guides etc.

Substrates Al2O3 96%

• electrical printer carriers, insulators

Zirconia ZrO2 y- or MgO-rod.

• very high surface qualities Ra

Fused silica SiO2

• very poor heat conductor, very low thermal expansion; max. 1000°C applicable
• Use as thermal insulators

Non-oxide ceramics:
Aluminium nitride AlN

• very good heat conductor, very good thermal shock resistance
• Use as heat conductors and boards

Silicon nitride Si3N4

• very wear resistant, high toughness and hardness
• for wear parts

Silicon carbide SiC, SiSiC

• High-temperature application, very good resistance to temperature changes; high thermal conductivity, extremely good oxidation resistance
• Examples of use: Slide bearings, guide rails

boron nitride BN+AlN

• low thermal expansion, low density
• for use in glass nozzles

Silicate ceramics:
Aluminium silicate Al2O3 60%

• very high thermal shock resistance, gas-tight; high electrical insulation even at high temperatures 1400°C
• Examples of use: Thermal engineering, wear component, resistance body

cordierite/mullite

• porous
• for filter ceramics

Steatite

• High temperature application
• for use in furnace construction or catalysts

Glasses and other ceramics:
Sapphire Al2O3 99.99%

• very good sliding properties, very good chemical resistance
• Light guides, sliding bodies, insulators, cutting components

Quartz glass SiO2 99.99%

• high temperature resistance 1000°C
• Application examples light guides and chemical use

Borosilicate for use in fibre optics
Macor

• max. 1000°C applicable, conditionally workable with conventional tools!
• For use in radiators and insulators

Our processing techniques:

• cut-off grinding max. diameter 70mm; max. length 250mm
• Surface and groove grinding max. length 300mm
• CNC contour grinding max. 200 x 130mm
• cylindrical grinding max. diameter 150mm; max. length between centres 350mm
• Centerless grinding max. diameter 50mm
• CNC round profile grinding max. diameter 100mm
• Internal honing max. inner diameter 25mm
• Flat lapping; -Polishing does not mean optical polishing for sapphire!
• Round polishing min. diameter 5mm; max. diameter 30mm

• Ceramic materials exhibit very high mechanical strength which is required for the application as components for machines and equipments.
• The hardness of advanced ceramic materials is above 9 on Moh´s Scale, and only diamond is harder (which rates 10 on Moh´s Scale). For this reason ceramic materials are excellent suitable for the production of parts with very high wear resistance e.g. for the paper-, textile- and wire industry.
• The low density of the ceramic material is advantageous in the design of rotating movable parts such as bearings, valves, and rotors.
• Ceramic materials are extremely heat resistant. The properties of metals can be significantly above 500 ° C after. Construction ceramics, however, can also be used above 1000 ° C. Ceramic components, for example in the metal industry in direct contact with molten metal (eg Abziehringen) is used.
• In contrast to metals ceramic materials react only insignificant with acids and bases. Therefore they are ideal for the application in chemical industry.

- Ceramic materials exhibit very high mechanical strength which is required for the application as components for machines and equipments.
- The hardness of advanced ceramic materials is above 9 on Moh´s Scale, and only diamond is harder (which rates 10 on Moh´s Scale). For this reason ceramic materials are excellent suitable for the production of parts with very high wear resistance e.g. for the paper-, textile- and wire industry.
- The low density of the ceramic material is advantageous in the design of rotating movable parts such as bearings, valves, and rotors.
- Ceramic materials are extremely heat resistant. The properties of metals can be significantly above 500 ° C after. Construction ceramics, however, can also be used above 1000 ° C. Ceramic components, for example in the metal industry in direct contact with molten metal (eg Abziehringen) is used.
- In contrast to metals ceramic materials react only insignificant with acids and bases. Therefore they are ideal for the application in chemical industry.
Moreover, ceramic materials are bioinert and are used as implants (e.g. hip joint endoprosthesis, tooth pins, malleus).
All ceramic materials (also non-oxide) exhibit excellent oxidation resistance at high temperatures.

Industrial ceramics are advanced materials made from compounds like alumina, zirconia, silicon carbide, and silicon nitride. These ceramics are valued for their hardness, high-temperature resistance, electrical insulation, and chemical stability.
Industrial ceramics outperform metals and plastics in harsh environments, offering durability and reliability. Despite their brittleness, they are essential for high-precision, high-performance applications in modern manufacturing and technology.

Applications of Industrial Ceramics
Industrial ceramics are widely used across multiple industries due to their exceptional properties, such as heat resistance, hardness, and electrical insulation. Key applications include:
1. Electronics
Substrates, insulators, and chip carriers for high-voltage and high-frequency devices.
Capacitors and resistors in electronic circuits.
2. Aerospace
Thermal barrier coatings for turbine blades.
High-temperature structural components in engines and spacecraft.
3. Energy
Fuel cells, insulators for power grids, and wind turbine components.
Heat exchangers and burners in renewable energy systems.
4. Industrial Manufacturing
Wear-resistant seals, bearings, and cutting tools.
Furnace linings, crucibles, and kilns for high-temperature processes.
5. Environmental Applications
Filters for water and air purification.
Catalytic substrates for emissions control.

Precision Industrial Ceramics represent a class of advanced technical ceramics engineered for extreme environments. Composed of high-purity inorganic compounds (Al₂O₃, ZrO₂, Si₃N₄, etc.), these materials eExceptional Hardness (Vickers hardness up to 2,000 HV)

Thermal Stability (withstanding temperatures exceeding 1,600°C)
Corrosion Resistance (inert to most acids/alkalis)
Electrical Insulation (volume resistivity >10¹² Ω·cm)Primary Applications:
✓ Semiconductor wafer handling components
✓ Aerospace turbine blade coatings
✓ Medical implant substrates (FDA Grade 5)
✓ High-voltage insulator bushings

Industry Advantages vs. Traditional Metals:
• 60% lighter weight with comparable strength
• 3-5x longer service life in abrasive environments
• Zero lubrication requirements
• Customizable porosity (0.1-30μm) for filtration systems
Recent breakthroughs include nanostructured ceramic composites achieving 98% theoretical density through spark plasma sintering (SPS), enabling micron-level dimensional tolerances (±0.5μm)

Jundro’s precision ceramic parts serve key industries, including semiconductors, medical devices, automation, defense and military, aerospace, and quantum research. The company has established strong partnerships with world-renowned enterprises and academic institutions, such as ABB,  General Electric, CETC, the Nuclear Power Research Institute, Tsinghua University, and Duke University, supplying them with high-precision ceramic components tailored to their needs.

Irregular Structural Parts: Machining accuracy of 0.01mm
Pipes and Rods: Cylindricity of 0.001mm, dimensional accuracy of 0.001mm
Flat Surfaces: Structural part flatness accuracy up to 0.001mm, optical products with flatness accuracy of up to 1/20λ
Microhole Structures: Minimum diameter of 0.1mm, accuracy of 0.01mm
Roughness: Structural parts with Ra0.01um, optical products with Ra0.002um

Aerospace
semiconductor
medical field
National defense and security
Electronic field
Optical field
Energy and Automation
Scientific quantum computing and other fields