Sourcing rubber timing belts from China
Rubber synchronous timing belts from China carry 6% UK duty across the relevant lines, with no listed trade remedy or suspension. Classification depends on vulcanised rubber construction and outside circumference; UK REACH also generally covers substances in articles. Cambridge China Bridge sources rubber synchronous timing belts.
6% duty on rubber synchronous timing belts
Heading 4010 covers conveyor and transmission belts of vulcanised rubber. This guide concerns toothed synchronous timing belts. Endless belts with an outside circumference exceeding 60 cm but not exceeding 150 cm fall under 4010 35 00 00; those exceeding 150 cm but not exceeding 198 cm fall under 4010 36 00 00. Other endless rubber synchronous belts fall under 4010 39 00 90. The shorter and longer sizes therefore share a code in the table.
Read from the UK Trade Tariff on 5 November 2026, all these lines carry 6% duty for goods from China. The supplied tariff data lists no anti-dumping or countervailing duty, suspension or attached import control for them. Suspensions elsewhere in the heading concern specified V-ribbed belts, rather than these synchronous belts. Import VAT is normally 20%; see UK import duty and VAT.
Confirm the rubber construction and outside circumference with your supplier before checking the commodity code. Do not substitute pitch length for outside circumference on the customs specification. For the wider product family, see conveyor belts and V-belts.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Endless rubber synchronous belts, outside circumference over 60 cm to 150 cm | 4010 35 00 00 | 6% | None |
| Endless rubber synchronous belts, outside circumference over 150 cm to 198 cm | 4010 36 00 00 | 6% | None |
| Endless rubber synchronous belts, outside circumference not exceeding 60 cm | 4010 39 00 90 | 6% | None |
Specify the tooth profile and pulley fit
State the tooth profile, pitch, tooth count, width, pitch length and outside circumference separately. Include the pulley drawing or machine reference, rubber compound, tensile-cord material, tooth-facing fabric and operating conditions. Agree dimensional tolerances and a sample trial in the intended drive before approving production.
The site's existing belting guide identifies ISO 5296 for trapezoidal synchronous tooth profiles; many metric and curvilinear profiles use the manufacturer's data. A matching pitch alone does not establish a matching tooth shape. Ask the factory to identify the drawing and profile used for each belt.
UK REACH generally applies to substances in articles, and restrictions can limit or prohibit their placing on the market or use. Ask for compound and additive information so applicable restrictions can be checked for supply in Great Britain. Match any chemical test report to the supplied construction; testing and certification support can help define the checks.
Worked duty example
Illustrative example, not a quote: 2,000 rubber synchronous timing belts for machinery spares, illustrative only under 4010 35 00 00, invoiced at £24,000 free on board, with £3,500 of freight and insurance to the UK. The customs value is £27,500. Duty at 6% is £1,650. Import VAT at 20% is charged on the customs value plus duty, £29,150, so it is £5,830. Import taxes total £7,480; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £1,650 of duty. The import duty and VAT guide explains each step.
Inspection checklist
Dimensions: check width, tooth count, pitch, tooth shape and outside circumference against the approved drawing; use a suitable gauge and record the measurement method.
Construction: inspect tooth roots, facing fabric, cut edges and belt backs for cracks, exposed cords, fraying, uneven moulding or separation.
Drive trial: check seating on the intended pulleys, tracking and tension against the machine supplier's instructions; compare the production sample with the approved sample.
Identification and packing: check belt references and batch details against cartons and inspection records; look for sharp folds, crushing and contamination. See quality inspection explained.
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What goes wrong
A belt can look correct yet have the wrong tooth profile or length convention. Poor pulley seating can cause noise, tooth wear or skipping. Weak cord adhesion, damaged tooth fabric and inconsistent rubber compound can cause stretching, tooth stripping or separation.
Avoid accepting a substitute solely because its printed belt reference matches. Compare the drawing, construction and drive trial, and investigate differences between batches before releasing stock. Keep vehicle engine applications separate from general machinery spares in the specification and approval records.
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.
Frequently asked questions
What is the UK import duty on rubber timing belts from China?
The relevant rubber synchronous belt lines carry 6% duty. The supplied tariff data lists no anti-dumping or countervailing duty, suspension or attached import control for these lines.
Which commodity code applies to a rubber synchronous belt?
Endless belts use 4010 35 00 00 for outside circumference over 60 cm to 150 cm, 4010 36 00 00 for over 150 cm to 198 cm, and 4010 39 00 90 outside those ranges.
Can I replace a timing belt with another of the same pitch?
Check the tooth profile, width, tooth count, cord construction and pulley fit as well as pitch. Approve a trial in the intended drive before accepting a substitute.
What should I ask the Chinese factory for before ordering?
Request the belt drawing, compound and cord specification, dimensional tolerances, batch identification and relevant test reports. Approve a sample against the intended pulleys and operating conditions.