Silicon Carbide Rollers

High-strength SiC rollers engineered for roller hearth kilns and high-temperature conveyors. Excellent sag resistance, thermal shock performance, and low deflection for stable transport at 1000–1650 °C.

Silicon carbide rollers are a new type of ceramic roller used in roller kilns, and they are an essential component in these kilns. Their primary function is to transport ceramic or glass products.

The application of rollers requires the material to have both high-temperature resistance and oxidation resistance, along with excellent thermal performance.

Additionally, the rollers must maintain minimal deformation under their own weight and the load of the products during continuous operation in high-temperature environments. This ensures that products move along the roller kiln in a straight line without malfunction.

Model	Specification (mm)	Outer Diameter (mm)	Inner Diameter (mm)	Wall Thickness (mm)	Length (mm)
AT-THG-KB001	OD20XID12	20	12	4	50-4500 mm
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	35.5	27.5	4
AT-THG-KB022	OD35.5XID25.5	35.5	25.5	5
AT-THG-KB023	OD35.5XID23.5	35.5	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

Item	Unit	Value
Maximum Working Temperature	°C	1380
Density	g/cm³	>3.02
Porosity	%	<0.1
Flexural Strength	MPa	250 (20°C)
Compressive Strength	MPa	280 (1200°C)
Elastic Modulus	GPa	330 (20°C)
Elastic Modulus	GPa	300 (1200°C)
Thermal Conductivity	W/m·K	45 (1200°C)
Thermal Expansion Coefficient	K*10⁻⁶	4.5
Mohs Hardness	–	13
Acid and Alkali Resistance	–	Excellent

Length (m)	Cross-section (mm)			Point Load Capacity (kg)	UDL Resultant (kg)
L	D1	D2	δ	Point Load Capacity (kg)	UDL Resultant (kg)
1	35	23	6	70	140
1	40	28	6	97	194
1	45	33	6	130	260
1	60	46	7	283	566
1	80	46	8	604	1208

Note:The bending strength of the reaction-sintered silicon carbide roller is calculated as 250MP, with a safety factor of 5, and the bearing capacity is calculated based on a length of 1 meter.

If the length of the product is L, the bearing capacity can be calculated as follows: concentrated force = value in the table x 1/L, uniform force resultant force = value in the table x 1/L. This bearing capacity is suitable for a temperature of 1380 ℃;

Processing accuracy:
Diameter 20-50mm ±1.5mm
Diameter 50-100mm ±3mm

1.High Temperature Resistance: Silicon carbide rollers offer excellent high-temperature resistance, capable of withstanding working temperatures up to 1380°C, making them suitable for high-temperature firing environments.

2.High Bending Strength: These rollers possess high bending strength, ensuring they do not break or bend during long-term use in high-temperature conditions.

3.Strong Oxidation Resistance: Silicon carbide rollers have excellent oxidation resistance, allowing them to maintain stability even in oxidizing environments without undergoing oxidation.

4.No Slagging: Unlike other materials, silicon carbide rollers do not shed slag during high-temperature use, ensuring the quality of the products being fired.

5.Exceptional Wear Resistance: These rollers have outstanding wear resistance, maintaining their performance over prolonged use without significant wear or degradation.

6.No Deformation Under Long-Term Use: Silicon carbide rollers retain their shape and do not bend or deform under high-temperature and high-load conditions during extended usage.

7.Long Service Life: Reaction-sintered silicon carbide rollers have a service life 10 to 15 times longer than alumina ceramic rollers, reducing replacement frequency and maintenance costs.

8.Wide Application: They are widely used in the high-temperature firing zones of roller kilns for daily-use ceramics, sanitary ceramics, architectural ceramics, and magnetic materials.

9.High Pressure Endurance: These rollers can withstand working pressures up to 280 MPa, ensuring stable operation under high load conditions.

1) RBSiC vs SSiC vs NSiC: how to choose?

RBSiC is the all-round choice for roller kilns with low porosity and strong MOR; SSiC targets highest temperature and purity; NSiC balances oxidation resistance and cost at mid-to-high temperatures. We’ll select by load, temp, atmosphere and cleanliness.

2) What maximum temperature can the rollers handle?

Typical guidance: RBSiC ≈1350 °C, NSiC ≈1450 °C, ReSiC ≈1650 °C; SSiC solutions are used in kilns operating above ~1500 °C. Actual limit depends on load, speed and atmosphere.

3) Do you offer hollow rollers?

Yes. Hollow rollers reduce mass and thermal inertia, improving energy use and lowering sag. Wall thickness is sized to load and span.

4) What straightness tolerance do you hold?

Typical production control is ≤0.8 mm per meter. We gauge straightness and run-out across the full length before shipment.

5) How are the ends prepared for drives?

Ends can be ground to diameter, drilled (round/slot) or sleeved to match your bearings, chains or toothed drives. Provide drawings or samples for exact fits.

6) How do I control sag and creep?

Choose higher-stiffness grades, use hollow geometry to lower mass, shorten support spans, and keep uniform temperature. Avoid overloads and glaze build-up that create point loads.

7) What surface finish is recommended?

As-sintered is common; ground/polished surfaces reduce friction and pick-up in clean lines. Coatings are available for oxidation-sensitive atmospheres.

8) Can these rollers run in oxidizing atmospheres?

Yes. RBSiC/NSiC/SSiC all show excellent oxidation resistance. Temperature and cycle rate should be matched to grade to preserve the protective surface.

9) What information do you need to quote?

OD/ID or solid, length, span and load, furnace temperature profile, atmosphere, line speed, end geometry, quantity, and any straightness/run-out targets.

10) Do you support battery CAM calcination lines?

Yes. We supply RBSiC rollers used on NCM/NCA/NCMA calcination lines and can customize surface, ends and balancing for your throughput and atmosphere.

Related Products

Silicon Carbide Seal

Silicon Carbide Boat

Silicon Carbide Balls

Silicon Carbide Nozzles

Silicon Carbide Plate

Silicon Carbide (SiC) Wafers and Substrates

6H SIC Wafer

4H SIC Wafer

FAQ

What types of silicon carbide products does Zirsec supply?

Zirsec offers a wide range of SiC components including tubes, beams, plates, crucibles, rollers, sealing rings, and custom mechanical parts for industrial, chemical, and semiconductor applications.

Can Zirsec provide customized sizes or shapes?

Yes. We support OEM and customized production based on your drawings, specifications, or working conditions.

Do you provide samples for testing?

Yes, sample orders are available for standard items. For custom-made components, small batch samples can be produced after design confirmation.

How can I request a quotation?

Simply fill out the contact form on this page with product type, quantity, and specifications. Our sales engineer will send you a detailed quotation within 24 hours.

Does Zirsec offer technical consultation or design assistance?

Absolutely. Our engineers provide material selection guidance, structural optimization, and technical support for your specific applications.

How does Zirsec ensure product quality?

All products undergo strict inspection procedures, including dimensional accuracy, density, strength, and corrosion resistance tests before delivery.

Tell us your requirements

Our technical engineer will reply with a custom solution and quotation within one working day.

Silicon Carbide Rollers