Tapered Stepped Ceramic Ferrule 99% Alumina Stepped Taper Insulator for Industrial Equipment

• Customization: Available
• Application: Industrial Ceramic
• Density: High Density
• Model NO.: HKCD
• Material: Alumina
• Shape: Tube
• Strength: High Strength
• Flexural Strength: 330MPa
• Sample: The Free Samples Can Be Supplied If There Are Sto
• Modulus of Elasticity: 370gpa
• Dimension: Standard or Customized
• Electrical Insulation: Good
• Occasion: Industrial Equipment
• Package: Professional Package or According to Requirements
• Vickers Hardness: 1800 Hv
• Dielectric Constant: 10
• Purity: 99%
• Water Absorption: 0
• Thermal Conductivity: 25W/M.K
• Key Word: Alumina Ceramic Insulator
• Key Word 2: Alumina Insulator
• Key Word 3: 99% Alumina Ceramic Insulator
• Transport Package: Wooden Boxes
• Specification: standard or customized
• Trademark: HB
• Origin: China
• Production Capacity: 5000

Product Description

Product Description

Tapered stepped ceramic ferrule 99% Alumina stepped taper insulator for Industrial Equipment

Made of dense 99% alumina ceramic via high-temperature sintering, featuring ultra-high dielectric strength up to 20KV/mm, Vickers Hardness 1800HV, excellent insulation, heat resistance and mechanical rigidity.
Available with customized multi-mounting holes, positioning notches, outer diameter & thickness tolerances controlled within ±0.01mm, Widely applied for thermocouple insulation, vacuum equipment and high temperature mechanical isolation components.

Alumina Ceramic Insulator

Super High Electrical Insulation Performance 
Rated dielectric strength: 20KV/mm,  volume resistivity reaches 10^14Ω·cm,   it effectively isolates high-frequency and high-voltage current and avoids electric breakdown, providing reliable insulation protection for furnace built-in thermocouple components.

Ultra Hard & Wear resistant
Vickers Hardness 1800HV, far superior to ordinary metal and plastic fittings, delivering long service life under continuous high-temperature operation.

Excellent High Temperature Resistance & Thermal Conductivity

Stably work under continuous high temperature up to 1600℃; thermal conductivity 25W/(m·K), fast heat dissipation, avoid heat accumulation inside equipment.

High Mechanical Structural Stability
Flexural Strength 330MPa, Elastic Modulus 370GPa, not easy to deform under pressure; zero water absorption, no expansion & deformation in humid environment.

Al2o3 Ceramic  Insulator  FAQ

Q1:Can you customize dimensions and structure for these stepped ceramic bushings?

A1:We support full customization of outer diameter, inner bore, height and step dimensions according to your drawings or samples. Tight machining tolerances ensure perfect fitting for thermocouple assemblies. Matching ceramic cover discs are available.

Q2:Do you accept small batch or prototype orders for custom stepped ceramic bushings? What is the MOQ?

A2: Low volume prototype orders are supported. There is no strict MOQ for custom samples, though unit cost will be higher for small quantities. Mass order pricing will be offered once your project volume increases.

Technical Specifications

(Custom configurations available upon request.)

Alumina Purity	92%	95%	96%	99%	99.6%
Color	white	white	white	Ivory White	White
Volume density	3.45g/cm3	3.5g/cm3	3.7g/cm3	3.75g/cm3	3.9g/cm3
Water Absorption	0	0	0	0	0
Flexural Strength	300Mpa	300Mpa	320Mpa	330Mpa	330Mpa
Vickers hardness	1300	1400	1400	1800	1800
Dielectric Constant	10 (at1MHZ25℃)	10 (at1MHZ25℃)	10 (at1MHZ25℃)	10 (at1MHZ25℃)	10 (at1MHZ25℃)
Modulus of elasticity	350Gpa	350Gpa	350Gpa	370Gpa	370Gpa
thermal conductivity (30℃)	18W/M.K	24W/M.K	24W/M.K	25W/M.K	28W/M.K
Volume resistivity	10^14Ω•cm	10^14Ω•cm	10^14Ω•cm	10^14Ω•cm	10^15Ω•cm
Dielectric strength	20KV/mm	20KV/mm	20KV/mm	20KV/mm	30KV/mm

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FAQ

Q1: Can you provide exclusive customized solutions for special project demands? 
A1: Yes. In addition to conventional OEM and ODM customization, we can develop exclusive product structures, adjust technical parameters and optimize solutions according to special project standards, regional industry specifications and personalized buyer requirements, providing one-to-one customized technical support.
 
Q2: Do you support third-party factory inspection and product random testing? 
A2: We support on-site factory audit and offline random inspection by buyers or authoritative third-party institutions. Our standardized production process, complete quality records and standardized management system can comply with mainstream international factory inspection standards.
 
Q3: How do you ensure on-time delivery for bulk orders? 
A3: We have a scientific production scheduling system and sufficient material reserve chain. According to order quantity and delivery cycle, we will formulate a detailed production plan, arrange special personnel to track progress in real time, and effectively avoid delivery delays to ensure stable and punctual shipment of bulk and urgent orders.
 
Q4: Why is your factory price more stable than trading companies? 
A4: As a direct manufacturer, we control all links from raw material procurement, production processing to finished product output. There is no intermediate markup, and we can adjust costs according to long-term cooperative orders, maintaining stable and transparent pricing for long-term strategic partners.
 
Q5: What customized service items can you support besides product structure? 
A5: Besides structural size and precision tolerance customization of industrial ceramic and quartz products, we support personalized services including custom deep processing, surface treatment, laser marking, custom packaging and technical document customization to meet different industrial and brand standards.