Product classification
HS code for Synchronous belt: 4010.36
Rubber, vulcanised, endless synchronous belts, of an outside circumference exceeding 150 cm but not exceeding 198 cm.
Classification of synchronous belt under HS 4010.36
Synchronous belts, commonly known as timing belts, are classified under HS code 4010.36 when they are made of vulcanized rubber and meet specific dimensional criteria. Heading 4010 covers conveyor or transmission belts or belting of vulcanized rubber. Within this heading, the 4010.3x series is dedicated to transmission belts. Subheading 4010.36 specifically identifies endless synchronous belts with an outside circumference exceeding 150 cm but not exceeding 198 cm. The classification is determined by three primary factors: the material (vulcanized rubber), the function (synchronous transmission, meaning they have teeth to prevent slipping), and the physical measurement of the circumference. These belts are critical components in internal combustion engines and industrial machinery where precise timing between shafts is required. The Harmonized System uses precise measurement ranges to differentiate these belts because different sizes serve distinct industrial applications and may be subject to different trade regulations or standards.
- Covers
- Endless rubber timing belts (150cm-198cm circumference)
- Toothed synchronous transmission belts for industrial machinery
- Automotive timing belts within the specified size range
- Reinforced rubber synchronous belts for power transmission
- Also under 4010.36
- Gates Poly Chain GT Carbon
- Continental ContiTech Falcon Pd
- Bando Mega Torque GII
- Optibelt OMEGA HL
Codes often confused with 4010.36
Common mistake. The most common misclassification occurs between different subheadings of 4010 based on circumference. For example, HS code 4010.35 is for synchronous belts with a circumference between 60 cm and 150 cm, while 4010.39 covers 'other' transmission belts that do not meet the specific synchronous or size criteria. It is also common to confuse these with V-belts (HS codes 4010.31 through 4010.34), which have a trapezoidal cross-section and do not have teeth. Finally, belts made of plastics rather than vulcanized rubber must be classified in Chapter 39 (specifically 3926.90), regardless of their function or size.
Top exporters and importers of HS 401036 (the code used for synchronous belt), 2025
In 2025, the largest exporter of HS 401036 (the code used for synchronous belt) in UN Comtrade data was Germany, with 22% of world exports; the largest importer in UN Comtrade data was the United States, with 19% of world imports. Countries that did not report 2025 data are estimated from partner records, which can understate them.
Figures cover everything classified under HS 401036, not only synchronous belt.
Top exporters 2025 · share of world exports
- 1 Germany $19M 22% of world exports
- 2 Japan $12M 14% of world exports
- 3 Italy $12M 14% of world exports
World total: $84M Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $15M 19% of world imports
- 2 Poland $5.4M 6.8% of world imports
- 3 Germany $5.2M 6.5% of world imports
World total: $80M Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for synchronous belt
Brazil classifies synchronous belt under NCM 4010.36.00: HS 4010.36 with 00 added.
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text on each NCM page is the official one.
EU Regulatory Requirements
This product category is subject to the EU Deforestation Regulation (EUDR). Importers must provide due diligence statements proving the product was not produced on deforested land after December 31, 2020.
Questions about synchronous belt
What is the HS code for Synchronous belt?
The HS code for Synchronous belt is 401036 (Rubber; vulcanised, endless synchronous belts, of an outside circumference exceeding 150 cm but not exceeding 198 cm). For an endless synchronous rubber belt with a circumference between 150 cm and 198 cm, the HS code is 4010.36.
How do I classify Synchronous belt for customs?
Synchronous belt is classified under HS code 401036 — Rubber; vulcanised, endless synchronous belts, of an outside circumference exceeding 150 cm but not exceeding 198 cm. This is a 6-digit subheading level code.
How do I measure a synchronous belt for HS classification?
You must measure the outside circumference of the belt in its endless (looped) state. The presence of teeth (cogs) confirms it is 'synchronous' rather than a standard V-belt.
Which countries are the top exporters of synchronous belt (HS 401036)?
In 2025, the top exporters of HS 401036 (the code used for synchronous belt) in UN Comtrade data were Germany ($19M, 22% of world exports), Japan ($12M) and Italy ($12M). World exports came to about $84M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Which countries are the top importers of synchronous belt (HS 401036)?
In 2025, the top importers of HS 401036 (the code used for synchronous belt) in UN Comtrade data were the United States ($15M, 19% of world imports), Poland ($5.4M) and Germany ($5.2M). World imports came to about $80M, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
Is the HS code for Synchronous belt the same in all countries?
The base HS code 401036 for Synchronous belt is internationally standardized for the first 6 digits across 200+ countries. Individual countries may add additional digits for national tariff lines and specific classifications.
What is the NCM code for synchronous belt in Brazil?
In Brazil, synchronous belt (HS 401036) is classified under NCM 4010.36.00.