When evaluating industrial corona rollers based on performance, ceramic rollers are generally regarded as top-tier products within the industry.
Data shows that high-quality alumina ceramics can achieve a hardness exceeding HV1000, whereas standard epoxy materials typically have a hardness of less than HV50.
In industrial environments, no single coating can "suit all operating conditions"; therefore, corona rollers must be available with a variety of coating options to ensure proper compatibility.
Silicone corona rollers are the most common, lowest-cost, and quick-replacement type of corona roller in the industry.
Typical lifespan of a silicone corona roller: approximately six months
This aligns with the actual operating experience of most factories and is consistent with the material's properties.
According to data from Jinhang Machinery, the dielectric strengths of different coatings are approximately as follows:
• Silicone corona roller: Approximately 400 inches/kW
• Epoxy-coated corona roller: Approximately 500 inches/kW
• Ceramic corona roller: Approximately 300 inches/kW
Ceramic rollers are known for their high wear resistance and good insulation properties and are suitable for high-intensity production lines. Its replacement cycle is usually between 18 months and 36 months, depending on the use environment and maintenance conditions.
● North American market: The price of corona rollers in the North American market is relatively high, generally between US$2,000 and US$5,000, mainly because the region has a large demand for high-quality products.
