gears and continuously variable transmission devices
CN → US| HS编码 | 关税税率 | 原产国 | 目的国 | 文档 |
|---|---|---|---|---|
| 8484900000 | 37.5% | CN | US | 官方文档 |
| 8484100000 | 37.5% | CN | US | 官方文档 |
| 8479909596 | 85.0% | CN | US | 官方文档 |
| 8479899599 | 87.5% | CN | US | 官方文档 |
| 8483409000 | 37.5% | CN | US | 官方文档 |
商品图片
AI分析
🔄 Gears and Continuously Variable Transmission (CVT) Devices
🌐 HS Code Reference & Clearance Guide | 2026 Latest Tariff Analysis | Professional Customs Strategy
📌 Part 1: Product Definition & Classification: Do You Really Understand "Transmission Devices"?
"Gears and Continuously Variable Transmission (CVT) Devices" refer to mechanical components that transmit power and motion. In international trade, they are generally divided into two main categories based on their structural independence and function:
Gear & Transmission Assemblies (8483 Series): Independent gearboxes, shafts, bearings, or gear units that are integral parts of machinery. Machinery Parts & Accessories (8479/8484 Series): Components like seals, gaskets, or specific parts of other machines (like construction or general industrial machinery) that do not have a standalone primary function but are essential for operation.
⚠️ Key Distinction Point:
- If the item is a standalone gear unit, gearbox, or CVT assembly with its own housing and transmission function → Classify under 8483.
- If the item is a seal, gasket, or specific part of a larger machine (not a standalone transmission unit) → Classify under 8484 or 8479.
- If the item is a part of general-purpose machinery (not specifically gears/transmissions as defined in Ch. 84.83) → Classify under 8479.
📦 Part 2: HS Code Classification Details (2026 Latest Tariff Authoritative Comparison)
| HS Code | Product Description | Application Scenario | Key Logic |
|---|---|---|---|
8483.40.90.00 |
Gears and gear boxes, other than toothed wheels, changing speed and other gear and transmission devices and parts thereof | Standalone gearboxes, CVT units, transmission shafts, gear assemblies | ✅ Direct Match: Specifically covers "gears and gear... transmission devices". The "no gear" description in some contexts refers to the type of CVT (e.g., belt/chain driven), but the function is still transmission. |
8484.90.00.00 |
Sealing gaskets and similar joints of metal sheeting combined with other material or of two or more layers of metal; sets or assemblies of sealing gaskets... | Mechanical seals, gaskets, joints used in transmission systems | ✅ Part/Accessory Logic: If the item is a seal or joint within a transmission, not the transmission itself. Matches "gaskets and similar joints". |
8484.10.00.00 |
Sealing gaskets and similar joints of metal sheeting combined with other material... | Metal gaskets, composite seals for mechanical parts | ✅ Material Logic: If the item is a metal seal/gasket component of a transmission device. |
8479.90.95.96 |
Parts and accessories of machines and mechanical appliances having individual functions, not specified or included elsewhere in this chapter | Parts of specific machinery (e.g., construction, handling) that include transmission elements | ⚠️ Indirect Match: Used if the transmission part belongs to a machine listed under 8479 (e.g., a part of a brick-making machine). |
8479.89.95.99 |
Machines and mechanical appliances having individual functions, not specified or included elsewhere in this chapter | General mechanical parts not fitting specific gear codes | ⚠️ Fallback Match: If the item is a generic mechanical part that doesn't fit the precise definition of 8483 (standalone transmission) or 8484 (seals). |
🔍 Key Reminder:
- Standalone Transmission Units (Gearboxes, CVT assemblies) MUST be classified under 8483.40.90.00.
- Seals/Gaskets within transmission systems fall under 8484.
- Parts of Other Machines (not standalone transmissions) fall under 8479.
- Misclassification leads to significant tariff differences due to Section 301 and 122 tariffs.
💰 Part 3: 2026 Latest Tariff Rate Breakdown (Including Surcharges, Policy Add-ons)
✅ Applicable Country: USA (US)
✅ Country of Origin: China (CN)
✅ Effective Date: November 10, 2025 onwards (including subsequent imports)
🎯 1. 8483.40.90.00 —— Gears and Transmission Devices (Standalone)
| Item | Content |
|---|---|
| Base Tariff | 2.5% (ad valorem) |
| USITC Surcharge (Section 301) | +25% |
| IEEPA Surcharge (Section 122) | +10% |
| Steel/Aluminum/Copper Surcharge | N/A (unless specifically identified as raw metal material under other codes, but this is finished machinery) |
| Total Tariff Rate | 37.5% |
| Tax Calculation | CIF Value × 37.5% |
| De Minimis Exemption | ❌ Not Eligible (deny_de_minimis) |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:8483.40.90.00 |
📌 Explanation:
- "25% USITC Surcharge" is from the "Additional Duties" under U.S. Trade Law Section 301.
- "10% IEEPA Surcharge" is the additional duty imposed on Chinese/HK products under the International Emergency Economic Powers Act.
- Total 37.5% is a high tariff for machinery parts. Pre-calculation is essential.
🎯 2. 8484.90.00.00 & 8484.10.00.00 —— Seals and Gaskets
| Item | Content |
|---|---|
| Base Tariff | 2.5% |
| USITC Surcharge | +25% |
| IEEPA Surcharge | +10% |
| Total Tariff Rate | 37.5% |
| Tax Calculation | CIF × 37.5% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:8484.90.00.00 / 8484.10.00.00 |
📌 Note:
- Same tariff rate as standalone gears.
- Even if it's a "gasket" for a transmission, it still bears the 301 and 122 duties.
🎯 3. 8479.90.95.96 & 8479.89.95.99 —— Other Machinery Parts
| Item | Content |
|---|---|
| Base Tariff | 0.0% (for 8479.90.95.96) or 2.5% (for 8479.89.95.99) |
| USITC Surcharge | +25% |
| IEEPA Surcharge | +10% |
| Steel/Aluminum/Copper Surcharge | +50% (If identified as steel, aluminum, or copper products under specific rules) |
| Total Tariff Rate | 85.0% (for 8479.90.95.96 with steel/al/cu) or 87.5% (for 8479.89.95.99) |
| Tax Calculation | CIF × 85.0% / 87.5% |
| De Minimis Exemption | ❌ Not Eligible |
| Legal Basis Path | IEEPA:9903.01.25 → IEEPA:9903.01.24 → USITC:8479.90.95.96 + Steel/Al/Cu Surcharge |
📌 Critical Warning:
- These codes are fallback categories. If you classify a standard transmission part here instead of 8483, you face much higher tariffs (85-87.5%) due to the additional 50% steel/aluminum/copper surcharge often applied to broader machinery parts.
- Do NOT use these codes unless the item is definitively NOT a standalone gear/transmission device AND not a seal.
🛠️ Part 4: Customs Clearance Practical Advice (实战避坑指南)
✅ 1. Required Documentation Checklist (None of the above are optional)
| Document | Mandatory | Description |
|---|---|---|
| ✅ Product Specification Sheet | ✔️ | Include dimensions, transmission ratio, material, power rating, torque. |
| ✅ Technical Diagram | ✔️ | To prove it's a standalone transmission (8483) vs. a part of another machine (8479). |
| ✅ Product Photos (with Nameplate) | ✔️ | Clear view of model number, brand, input/output shafts. |
| ✅ Commercial Invoice | ✔️ | Must clearly state "Gears and Continuously Variable Transmission Devices". |
| ✅ Packing List | ✔️ | Detail items to avoid splitting a single unit into multiple shipments. |
✅ 2. Declaration Tips (Key Mantra)
🔥 "Function First, Code Right, Avoid 85%, Save Thousands!"
| Scenario | Correct Declaration | Wrong Practice |
|---|---|---|
| Standalone Gearbox/CVT | 8483.40.90.00 |
Misdeclare as "Machine Part" → 85%+ |
| Transmission Seal/Gasket | 8484.90.00.00 |
Misdeclare as "Gear" → 37.5% (ok, but wrong description) |
| Part of a Specific Machine (e.g., Conveyor) | 8479.90.95.96 |
Only if it's not a standalone transmission. High risk of 85%+. |
| Mixed Materials (Metal + Plastic) | 8483.40.90.00 |
If it's a transmission assembly, material doesn't change code to 8479 usually. |
✅ 3. Special Cases
| Situation | Handling Advice |
|---|---|
| OEM Custom Transmission | Provide customer order + design drawings. Avoid "Generic Part" descriptions. |
| Transmission + Motor as a Unit | If integrated, it might fall under motor codes (8501), which have different tariffs. Check integration level. |
| Steel/Aluminum Content | Be careful with 8479 codes. If the part is largely metal, the 50% surcharge applies. 8483 is safer for finished transmission units. |
| Origin Declaration | Ensure CO (Certificate of Origin) matches the manufacturing country. China origin triggers all surcharges. |
🌍 Part 5: Global Market Clearance Comparison (2026 Latest)
| Country/Region | Recommended HS Code | Tariff (CN Origin) | Certification Requirements | Notes |
|---|---|---|---|---|
| 🇺🇸 USA | 8483.40.90.00 |
37.5% | None specific (but 301/122 apply) | Highest risk due to 301/122. |
| 🇨🇳 China | 8483.40.90.00 |
5% (Import) | CCC (if applicable) | Low tariff. |
| 🇪🇺 EU | 8483.40.90.00 |
1.4% (MFN) | CE | No Section 301/122. |
| 🇦🇺 Australia | 8483.40.90.00 |
5.0% | RCM (if electrical) | No surcharges. |
| 🇯🇵 Japan | 8483.40.90.00 |
0% | PSE (if electrical) | Free trade benefits. |
📌 Conclusion:
- USA is the only major market with heavy surcharges (37.5%-87.5%).
- Misclassification into 8479 can double the cost (from 37.5% to 85%+).
- Precision in description is key to avoiding 8479 fallback codes.
📌 Part 6: Common Errors & Pitfalls (Lessons Learned)
❌ Error 1: Declaring a standalone gearbox as a "Part of Machine" (8479)
👉 Consequence: Tariff jumps from 37.5% to 85%+ → Massive overpayment!
❌ Error 2: Using vague terms like "Mechanical Parts"
👉 Consequence: Customs may reclassify to 8479 → 85% tax + delays.
❌ Error 3: Ignoring the "No Gear" description in CVTs
👉 Clarification: "No gear" in CVT often means "no fixed-step gears" (belt/chain/various pulleys), but it is STILL a transmission device. Classify under 8483.
❌ Error 4: Splitting a CVT unit into "housing" and "internal parts"
👉 Consequence: Internal parts might be taxed as general machinery parts (8479) at 85%. Declare as a complete unit.
✅ Correct Practice:
"Continuously Variable Transmission (CVT) Assembly, Model XYZ, Complete Unit, Includes Housing, Input/Output Shafts, For Industrial Use, Made in China"
🎯 Part 7: Conclusion: Professional Declaration, Save Time, Cut Costs!
🎯 Remember the Mantra:
🔹 "Standalone Transmission = 8483 (37.5%) | Part of Machine = 8479 (85%+) | Seal = 8484 (37.5%)"
🔹 "Code Choice Determines Tax, 37.5% vs 85% is a Huge Gap!"
📌 Tips:
- If your CVT/transmission originates from Vietnam, Mexico, Thailand, Malaysia, you may apply for IEEPA/301 Exemptions, reducing tariffs to 0%-5%.
- Recommend applying for an Advance Ruling if the classification is ambiguous.
📣 Immediate Action:
📞 Contact a professional customs broker + Provide Product Photos + Apply for HS Code Advance Ruling
🚀 Let your transmission devices clear customs smoothly, boost efficiency, and maximize profits!
✨ Professional Clearance Starts with Accurate Classification!
💼 Every cent of your cost deserves precise calculation!
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关于 HS 编码归类
协调制度（HS）是由世界海关组织（WCO）制定的国际贸易商品分类标准。全球 200 多个国家采用 HS 系统作为海关关税、贸易统计和进出口监管的基础。
每个 HS 编码遵循以下层级结构：
- 章（2 位）——商品大类（例如：第 84 章：机器和机械设备）
- 品目（4 位）——章内的更具体分类
- 子目（6 位）——国际通用细分，所有 WCO 成员国统一使用
- 本国细分（8-10 位）——各国自行扩展的细分编码，如美国 HTSUS 10 位编码
正确的 HS 编码归类对于顺利通关、准确缴纳关税和遵守贸易法规至关重要。错误归类可能导致海关延误、多缴关税或罚款。
从CN进口到US时，适用的关税税率可能包括：
- 最惠国（MFN）税率——适用于 WTO 成员国的标准关税税率
- 普通税率——适用于无贸易协定国家
- 贸易救济关税——附加关税，如 301 条款（反倾销）、232 条款（国家安全）或反补贴税
本页内容仅供参考。如需正式归类，请咨询当地海关或持牌报关代理。