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Silicon carbide kiln roller for continuous roller hearth kiln firing
Process-Ready Silicon Carbide Kiln Roller for High-Temperature Material Lines
Stabilized Silicon Carbide Kiln Roller for High-Duty Thermal Lines
Strength-Optimized Silicon Carbide Kiln Roller for Ceramic Processing Lines

Silicon Carbide Kiln Roller for Continuous Roller Hearth Kilns

ADCERAX supplies reaction-bonded silicon carbide kiln rollers for continuous roller hearth kilns, ceramic firing lines, lithium battery material calcination, powder metallurgy sintering and other high-temperature transport systems. The RBSiC / SiSiC structure provides high stiffness, thermal shock resistance, wear resistance and dimensional stability under demanding kiln atmospheres.

Standard OD / ID combinations are available, and custom roller length, wall thickness, end structure, bearing interface and surface finish can be produced according to kiln layout, load condition and operating temperature.

Catalogue No. AT-THG-KB001
Material Reaction-Bonded Silicon Carbide (RBSiC / SiSiC)
Flexural Strength Typical >200–250 MPa for long-span stability
Custom Options OD, ID, length, wall thickness, end design, surface finish
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ADCERAX Silicon Carbide Kiln Roller is engineered for continuous thermal cycling in roller hearth kilns where material flow, straightness retention, and temperature uniformity determine production stability. Its reaction-bonded SiC microstructure provides high modulus and low creep behavior, allowing the roller to maintain alignment under heavy ceramic loads and persistent exposure to alkali-rich kiln atmospheres. This combination of mechanical rigidity and thermal efficiency supports consistent firing results across lithium battery materials, technical ceramics, and large-format porcelain applications.

 

Why Use Silicon Carbide Kiln Rollers in Continuous Firing Lines?

Silicon carbide kiln rollers are selected when conventional oxide rollers or metal rollers cannot maintain stable geometry under high-temperature cycling, heavy ware loading or corrosive kiln atmospheres. In roller hearth kilns, roller straightness, surface condition and heat-transfer behavior directly affect product movement, firing uniformity and downstream dimensional consistency.

ADCERAX RBSiC kiln rollers are designed for high-stiffness support, low creep tendency, thermal shock resistance and stable rotation in continuous industrial firing processes. The final material grade, wall thickness and roller interface should be confirmed according to kiln temperature, span length, load distribution, atmosphere chemistry and bearing design.

Engineering Requirement Why SiC Helps Buyer Value
Long-span roller support High elastic modulus helps reduce bending under load. More stable product transport across long kiln zones.
Repeated thermal cycling SiC has strong thermal shock resistance compared with many oxide ceramics. Lower risk during start-up, shutdown and temperature changes.
Alkali or oxidizing kiln atmospheres Dense RBSiC structure resists surface degradation in many harsh firing environments. More stable roller surface condition during long campaigns.
Heavy setters or trays High hardness and flexural strength support demanding loading conditions. Lower wear risk at the roller contact surface.
Firing uniformity Thermal conductivity helps reduce localized heat imbalance. Better process control for sensitive ceramic or powder materials.

Technical Specifications of Silicon Carbide Kiln Roller

The following values are typical material references for RBSiC / SiSiC kiln rollers. Final performance depends on roller size, wall thickness, span length, load distribution, kiln atmosphere, heating curve and support design. ADCERAX can review your kiln layout and operating conditions before confirming the recommended roller specification.

Property Specification
Material Composition Reaction-Bonded SiC (RBSiC / SiSiC)
Flexural Strength >200–250 MPa
Compressive Strength >1,500 MPa
Surface Hardness HRA 88–90
Elastic Modulus >300 GPa
Thermal Conductivity 35–45 W/m·K
Maximum Operating Temperature 1,350–1,380 °C (continuous use)
Thermal Expansion Coefficient 4.0–4.5 × 10⁻⁶ /K
Thermal Shock Resistance Stable after rapid ΔT cycles >250 °C
Bulk Density 2.95–3.05 g/cm³
Open Porosity <0.1%
Chemical Resistance Stable in alkali-rich, oxidizing, CO/CO₂ kilns
Creep Resistance Low creep at 1,200–1,350 °C
Oxidation Stability Stable up to 1,400 °C in air

Dimensions of Silicon Carbide Kiln Roller

Model No. Size（mm） OD（mm) ID（mm) Thickness（mm） Length（mm）
AT-THG-KB001 OD20XID12 20 12 4 50-4500mm
AT-THG-KB002 OD20XID10 20 10 5
AT-THG-KB003 OD25XID15 25 15 5
AT-THG-KB004 OD28XID20 28 20 4
AT-THG-KB005 OD25XID13 25 13 6
AT-THG-KB006 OD25.3XID17.3 25 17.3 4
AT-THG-KB007 OD25.3XID18.3 25 18.3 3.5
AT-THG-KB008 OD28XID18 28 18 5
AT-THG-KB009 OD30XID22 30 22 4
AT-THG-KB010 OD30XID18 30 18 6
AT-THG-KB011 OD30.3XID21.3 30 21.3 4.5
AT-THG-KB012 OD32XID24 32 24 4
AT-THG-KB013 OD32XID22 32 22 5
AT-THG-KB014 OD32XID20 32 20 6
AT-THG-KB015 OD33.5XID25.5 33 25.5 4
AT-THG-KB016 OD33.5XID23.5 33 23.5 5
AT-THG-KB017 OD33.5XID21.5 33 21.5 6
AT-THG-KB018 OD35XID27 35 27 4
AT-THG-KB019 OD35XID25 35 25 5
AT-THG-KB020 OD35XID23 35 23 6
AT-THG-KB021 OD35.5XID27.5 35 27.5 4
AT-THG-KB022 OD35.5XID25.5 35 25.5 5
AT-THG-KB023 OD35.5XID23.5 35 23.5 6
AT-THG-KB024 OD38XID30 38 30 4
AT-THG-KB025 OD38XID28 38 28 5
AT-THG-KB026 OD38XID26 38 26 6
AT-THG-KB027 OD40XID30 40 30 5
AT-THG-KB028 OD40XID29 40 29 5.5
AT-THG-KB029 OD40XID28 40 28 6
AT-THG-KB030 OD42XID32 42 32 5
AT-THG-KB031 OD42XID30 42 30 6
AT-THG-KB032 OD45XID35 45 35 5
AT-THG-KB033 OD45XID33 45 33 6
AT-THG-KB034 OD45XID31 45 31 7
AT-THG-KB035 OD48XID38 48 38 5
AT-THG-KB036 OD48XID36 48 36 6
AT-THG-KB037 OD48XID34 48 34 7
AT-THG-KB038 OD50XID40 50 40 5
AT-THG-KB039 OD50XID38 50 38 6
AT-THG-KB040 OD50XID36 50 36 7
AT-THG-KB041 OD55XID43 55 43 6
AT-THG-KB042 OD55XID39 55 39 8
AT-THG-KB043 OD58XID46 58 46 6
AT-THG-KB044 OD58XID44 58 44 7
AT-THG-KB045 OD58XID42 58 42 8
AT-THG-KB046 OD60XID48 60 48 6
AT-THG-KB047 OD60XID46 60 46 7
AT-THG-KB048 OD60XID44 60 44 8
AT-THG-KB049 OD65XID51 65 51 7
AT-THG-KB050 OD65XID53 65 53 6
AT-THG-KB051 OD70XID58 70 58 6
AT-THG-KB052 OD70XID56 70 56 7
AT-THG-KB053 OD70XID54 70 54 8
AT-THG-KB054 OD75XID63 75 63 6
AT-THG-KB055 OD75XID61 75 61 7
AT-THG-KB056 OD75XID59 75 59 8
AT-THG-KB057 OD89XID75 89 75 7
AT-THG-KB058 OD99XID79 99 79 10

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Packaging Overview for Silicon Carbide Kiln Roller

Silicon Carbide Kiln Roller is packed in reinforced wooden crates with foam-lined compartments to prevent contact and vibration during transport. Each roller is individually separated to avoid surface abrasion and structural impact in long-distance shipments. The overall packaging structure is designed to maintain stability under stacking, ensuring safe arrival for industrial kiln installation.

Packaging for Silicon Carbide Protection Tube

Applications of Silicon Carbide Kiln Rollers

ADCERAX silicon carbide kiln rollers are used in continuous firing systems where roller straightness, load stability, thermal cycling resistance and surface durability affect production consistency. Typical applications include lithium battery material calcination, technical ceramic substrate firing, powder metallurgy sintering and high-temperature ceramic product firing.

Application Operating Challenge Why SiC Kiln Rollers Are Used RFQ Information to Provide
Lithium cathode material calcination Alkali-rich vapor, powder adhesion and long firing cycles can damage roller surfaces. RBSiC helps maintain surface stability and transport alignment in demanding kiln atmospheres. Temperature range, atmosphere, powder type, roller span and existing failure mode.
Technical ceramic substrate firing Thin ceramic plates are sensitive to temperature variation and roller deflection. High stiffness and thermal stability help support consistent firing geometry. Substrate size, setter weight, kiln length, rotation speed and flatness requirements.
Powder metallurgy and ferrite sintering Dense loads and long soak zones increase bending and surface wear risk. SiC provides high hardness, good load support and reduced creep tendency. Product load per roller, support distance, soak temperature and tray material.
Porcelain and large-format ceramic firing Long production lines need stable roller motion and durable contact surfaces. SiC rollers support high-temperature transport where conventional rollers may wear or deform. Roller diameter, length, wall thickness, firing cycle and kiln drive design.

Handling, Installation and Maintenance Guide for SiC Kiln Rollers

Proper handling, installation and routine inspection help SiC kiln rollers maintain stable rotation, load support and long-term dimensional reliability in roller-hearth kiln systems.

  • Handling and Pre-Installation Preparation

    Lift rollers with stable multi-point support and avoid impact during unpacking. Before installation, check the roller surface, end faces and bore for chips, cracks or visible damage.

  • Installation and Alignment

    Keep seats, bearings and contact areas clean before assembly. After installation, confirm axial position and smooth rotation to reduce vibration, side friction and uneven product transport.

  • Operation During Firing

    Avoid rapid heating or cooling beyond kiln process limits. Trays, setters or products should be distributed evenly across the roller span to reduce local bending stress and surface wear.

  • Routine Maintenance

    Inspect straightness, vibration, surface deposits and bearing condition during scheduled maintenance. Regular tracking helps identify alignment or support problems before unexpected downtime occurs.

Silicon Carbide Kiln Roller FAQ

  1. Q1: What is a silicon carbide kiln roller used for?

    A silicon carbide kiln roller is used as a high-temperature transport roller in roller hearth kilns, ceramic firing lines, lithium battery material calcination kilns, powder metallurgy sintering lines and other continuous firing systems. It supports trays, setters, substrates or fired products while maintaining stable rotation under heat, load and kiln atmosphere exposure.

  2. Q2: Why choose RBSiC / SiSiC kiln rollers instead of alumina rollers?

    RBSiC / SiSiC kiln rollers are usually selected when higher stiffness, thermal shock resistance, wear resistance and chemical stability are required. Compared with many oxide ceramic rollers, silicon carbide can provide better dimensional stability in long-span, high-load or alkali-rich kiln environments.

  3. Q3: What information is needed to quote a custom SiC kiln roller?

    The most useful RFQ information includes OD, ID, length, wall thickness, end structure, roller span, load per roller, operating temperature, kiln atmosphere, rotation speed, current roller material and failure mode. A drawing, sample photo or existing roller specification helps speed up engineering review.

  4. Q4: Can ADCERAX manufacture replacement rollers for an existing kiln?

    Yes. ADCERAX can manufacture replacement silicon carbide kiln rollers according to customer drawings, samples or existing kiln specifications. Roller OD, ID, length, wall thickness, end structure, bearing interface, drive-end design and surface finish can be reviewed to match the original roller-hearth kiln layout.

  5. Q5: How long does a silicon carbide kiln roller last?

    Service life depends on kiln temperature, load, span length, atmosphere, thermal cycling, bearing condition and maintenance practice. ADCERAX does not recommend judging roller life by material alone. For critical lines, buyers should record straightness, surface condition, vibration and rotation behavior to plan replacement based on actual operating data.

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Custom Silicon Carbide Kiln Rollers for Existing Kiln Systems

Kiln rollers usually need to match an existing roller hearth kiln rather than a standard drawing alone. ADCERAX reviews the kiln width, roller span, bearing interface, drive-end structure, loading condition, firing temperature and atmosphere before recommending the suitable RBSiC roller design.

Custom Item What Can Be Adjusted Why It Matters
OD / ID / Wall Thickness Roller diameter, bore size and wall section. Balances load capacity, weight and thermal response.
Length and Straightness Total length and straightness control. Supports stable rotation across long kiln spans.
End Structure Plain end, stepped end, drive end or bearing interface. Helps fit existing support and rotation systems.
Surface Finish Ground or finished contact surface. Reduces abrasion risk and supports smoother product movement.
Material Grade Review RBSiC / SiSiC suitability by atmosphere and temperature. Avoids material mismatch in corrosive or high-load kilns.
Replacement Matching Sample-based or drawing-based replacement. Helps replace failed imported or obsolete kiln rollers.
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