Grinding Mill Liner Plates
Grinding mill liner plates are rubber or steel plates that protect the shell of ball and rod mills while grinding ores to fine powder. They feature wave or ribbed patterns to enhance mineral cascading and reduce wear. As parts of mineral grinding machinery, they are classified under tariff item 8474.90.00.
Import Duty Rates by Country of Origin
| Origin Country | MFN Tariff | Surtaxes | Total Effective Rate |
|---|---|---|---|
| 🇨🇳China | Free | — | Free |
| 🇲🇽Mexico | Free | — | Free |
| 🇺🇸United States | Free | — | Free |
| 🇩🇪Germany | Free | — | Free |
| 🇯🇵Japan | Free | — | Free |
More Specific Codes
This product may fall under a more specific subheading:
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If the liner plates are imported with a new grinding mill as original equipment
Original parts presented with a complete machine are classified with that machine.
If the liner plates are made of vulcanised rubber and are not identifiable as machine parts
Other articles of vulcanised rubber, not elsewhere specified, may fall under this heading.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right tariff item — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Classify liner plates as parts of ball or rod mills under 8474.90.00; the CBSA may request the mill type and liner dimensions
• If the plates are made of rubber, confirm they are not classified under Chapter 40 as general rubber articles
• Provide the material specification (steel or rubber) and the intended mill model to support the classification
Related Products under Tariff item 8474.90.00
Aggregate Washing Plant Pump Impellers
Abrasion-resistant impellers designed for slurry pumps used in aggregate washing plants. These parts are integral to the washing machinery that cleans earth, stone, or ores, ensuring efficient handling of sand, gravel, and water mixtures.
Autogenous Grinding Mill Shell Lifters
Shell lifter bars are high-strength steel castings installed inside autogenous (AG) and semi-autogenous (SAG) mills. They elevate the ore charge so that rocks cascade and grind copper or gold ores without additional media. As replacement parts for mineral grinding machinery, they are classified under tariff item 8474.90.00.
Ball Mill Liner Segments
High-chrome cast iron liner segments that line the interior of ball mills used for grinding mineral ores into fine powder. These sacrificial parts protect the mill shell and enhance grinding efficiency in mineral processing.
Classifying Cyclone Apex Insert
A tungsten carbide apex insert designed for classifying cyclones that separate fine mineral particles by size and weight. This wear part offers extreme abrasion resistance, making it essential for the efficient operation of mineral separating and washing machinery. It is classified under this tariff item as a part of machines for sorting, screening, separating or washing mineral substances.
Cone Crusher Mantle Bowls
Manganese steel bowl liners and mantles for cone crushers that provide secondary or tertiary crushing of mineral ores through compression. These precision-machined parts form the working surfaces of the crushing chamber.
Cone Crusher Mantle Liners
Cone crusher mantle liners are contoured wear parts made from chrome-moly alloys that protect the inner cone during ore and stone crushing. They provide the crushing surface in secondary and tertiary stages of mineral processing. As replacement parts for cone crushers, they are classified under tariff item 8474.90.00.