Sourcing CBN grinding wheels from China

UK duty on cubic boron nitride grinding wheels

Read from the UK Trade Tariff on 1 October 2026, heading 6804 covers grinding wheels and related abrasive products without frameworks. For bonded cubic boron nitride wheels, the table lists candidate lines by binder and reinforcement. All carry 0% duty for goods from China. The supplied record shows no anti-dumping or countervailing measures and no suspensions for these lines.

The supplied tariff record attaches an import waste control. For wheels from China classed as waste and subject to notification controls, the exporter must apply to the competent authority in the dispatch country for consent when importing into England. Confirm the applicable waste classification, permissions and documents with your customs broker before shipping.

Give your broker the abrasive composition, binder, reinforcement details and wheel drawing to confirm the commodity code. These candidate lines concern bonded constructions; do not assume that a supplier's code covers every wheel construction. See the wider grinding and cutting wheels guide and UK import duty and VAT.

Specify the abrasive layer and machine fit

Specify cubic boron nitride abrasive, grain size and grading method, concentration, bond type, abrasive-layer width and depth, core material and wheel profile. Include outside diameter, bore, thickness, mounting arrangement and agreed runout and balance tolerances. Describe the workpiece material, grinding operation, coolant and dressing method so the factory supplies a wheel for your process.

The published wider guide identifies BS EN 13236 for cubic boron nitride superabrasive wheels. Ask for batch-linked safety test evidence, maximum operating speed and restrictions of use. Importers remain responsible for product safety after placing goods on the market. Arrange testing and certification checks before approving shipment.

Worked duty example

Illustrative example, not a quote: Illustrative trial batch of non-reinforced resin-bonded cubic boron nitride grinding wheels under 6804 22 12 00, invoiced at £2,500 free on board, with £150 of freight and insurance to the UK. The customs value is £2,650. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £2,650, so it is £530. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Identity: check the batch reference, abrasive grade, bond and wheel profile against the purchase specification and approved sample.

Fit: measure the bore, mounting faces and abrasive layer; check runout and balance against the drawing using suitable equipment.

Safety evidence: match the wheel and batch to the test records and speed marking. Never exceed the manufacturer's maximum permissible operating speed.

Condition and performance: check for cracks, chipped edges and separation of the abrasive layer from the core. Compare finish, loading and wear in an agreed machine trial; use the quality inspection guide to document acceptance.

What goes wrong

A wheel can match the outside dimensions yet fail in use because its bore or mounting faces are wrong, the abrasive layer runs out of true, or the bond differs from the sample. Layer separation, vibration, rapid wear and inconsistent finish are reasons to hold the batch for investigation.

A generic test report does not establish that the delivered wheel was tested. Match construction, grade, speed and batch references before acceptance. Agree how the factory will investigate rejected wheels and require written approval before changing the bond, abrasive concentration or core.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.