Chapter 84 is a broad category in the HS classification system covering mechanical appliances, machinery and their parts, including power machinery, metalworking machinery, industrial robots, office equipment, refrigeration equipment, etc. The core feature of this chapter is that the goods have mechanical motion or energy conversion functions and are usually used for industrial production or power transmission. As a type of metal cutting machine tool, CNC cylindrical grinding machines are typical industrial processing machinery and are therefore classified under Chapter 84. Heading 8460 specifically covers machine tools for deburring, sharpening, grinding, honing, lapping, polishing or otherwise finishing metal, sintered metal carbides or cermets by means of grinding stones, abrasives or polishing products. Machine tools under this heading are further subdivided by processing method (surface, cylindrical, internal, etc.) and whether they are numerically controlled. CNC cylindrical grinding machines are CNC machine tools that use abrasives to grind the external cylindrical surface of metal, and are therefore classified under this heading. The HS code 846021 has 6 digits: the first 2 digits "84" represent Chapter 84, i.e. mechanical appliances, machinery and their parts; digits 3-4 "60" represent heading 8460, i.e. machine tools for finishing metal by means of grinding stones, abrasives or polishing products; digits 5-6 "21" represent subheading 846021, i.e. CNC cylindrical grinding machines. Among them, the 5th digit "2" indicates cylindrical grinding machines, and the 6th digit "1" indicates numerically controlled. Therefore, 846021 fully represents "CNC cylindrical grinding machine", i.e. a cylindrical grinding machine controlled by a CNC system. This commodity is classified under 846021 rather than adjacent codes because its core function is to grind the external cylindrical surface of metal with abrasives and it has CNC functionality. If it were a non-CNC cylindrical grinding machine, it should be classified under 846029; if it were a CNC internal grinding machine, it should be classified under 846023; if it were a CNC surface grinding machine, it should be classified under 846012. Therefore, 846021 precisely corresponds to CNC cylindrical grinding machines.
Chapter
Chapter 84 is a broad category in the HS classification system covering mechanical appliances, machinery and their parts, including power machinery, metalworking machinery, industrial robots, office equipment, refrigeration equipment, etc. The core feature of this chapter is that the goods have mechanical motion or energy conversion functions and are usually used for industrial production or power transmission. As a type of metal cutting machine tool, CNC cylindrical grinding machines are typical industrial processing machinery and are therefore classified under Chapter 84.
Heading
Heading 8460 specifically covers machine tools for deburring, sharpening, grinding, honing, lapping, polishing or otherwise finishing metal, sintered metal carbides or cermets by means of grinding stones, abrasives or polishing products. Machine tools under this heading are further subdivided by processing method (surface, cylindrical, internal, etc.) and whether they are numerically controlled. CNC cylindrical grinding machines are CNC machine tools that use abrasives to grind the external cylindrical surface of metal, and are therefore classified under this heading.
Digit Breakdown
The HS code 846021 has 6 digits: the first 2 digits "84" represent Chapter 84, i.e. mechanical appliances, machinery and their parts; digits 3-4 "60" represent heading 8460, i.e. machine tools for finishing metal by means of grinding stones, abrasives or polishing products; digits 5-6 "21" represent subheading 846021, i.e. CNC cylindrical grinding machines. Among them, the 5th digit "2" indicates cylindrical grinding machines, and the 6th digit "1" indicates numerically controlled. Therefore, 846021 fully represents "CNC cylindrical grinding machine", i.e. a cylindrical grinding machine controlled by a CNC system.
Classification Basis
This commodity is classified under 846021 rather than adjacent codes because its core function is to grind the external cylindrical surface of metal with abrasives and it has CNC functionality. If it were a non-CNC cylindrical grinding machine, it should be classified under 846029; if it were a CNC internal grinding machine, it should be classified under 846023; if it were a CNC surface grinding machine, it should be classified under 846012. Therefore, 846021 precisely corresponds to CNC cylindrical grinding machines.
📝 Declaration Elements
Product Name: The Chinese and English names of the declared commodity shall be consistent with the contract and invoice. Brand: Fill in the manufacturer or brand name; if there is no brand, indicate "no brand". Model: Fill in the specific model, such as MK1320, GA26, etc. Processing Object: State the material to be processed, such as metal, cemented carbide, etc. CNC Device: Indicate whether a CNC system is equipped and its brand and model. Grinding Diameter Range: Fill in the maximum and minimum grinding diameters, in millimeters. Power: Fill in the main motor power, in kilowatts. Origin: Fill in the place of production, such as Germany, Japan, China, etc. Product Name: CNC cylindrical grinding machine; Brand: STUDER; Model: S33; Processing Object: metal; CNC Device: GE Fanuc 31i; Grinding Diameter Range: 0.5-200mm; Main Motor Power: 7.5kW; Origin: Switzerland. Failure to indicate "CNC" leads to classification under 846029 (non-CNC cylindrical grinding machine). Mistakenly declaring a cylindrical grinding machine as an internal grinding machine, leading to classification under 846023. Inconsistency between brand and model entries, affecting customs valuation.
Product Name
The Chinese and English names of the declared commodity shall be consistent with the contract and invoice.
⚠️ Writing only "grinding machine" without indicating "CNC cylindrical", leading to classification disputes.
Brand
Fill in the manufacturer or brand name; if there is no brand, indicate "no brand".
⚠️ Mistakenly filling in the trader's brand as the manufacturer's brand.
Model
Fill in the specific model, such as MK1320, GA26, etc.
⚠️ The model is incomplete or inconsistent with the actual item.
Processing Object
State the material to be processed, such as metal, cemented carbide, etc.
⚠️ Writing vaguely "workpiece" without clarifying the material.
CNC Device
Indicate whether a CNC system is equipped and its brand and model.
⚠️ Failure to distinguish CNC from non-CNC, resulting in incorrect subheading.
Grinding Diameter Range
Fill in the maximum and minimum grinding diameters, in millimeters.
⚠️ Omitting the range or using incorrect units.
Power
Fill in the main motor power, in kilowatts.
⚠️ Filling in total power instead of main motor power.
Origin
Fill in the place of production, such as Germany, Japan, China, etc.
⚠️ Mistaking the assembly place for the origin.
Example： Product Name: CNC cylindrical grinding machine; Brand: STUDER; Model: S33; Processing Object: metal; CNC Device: GE Fanuc 31i; Grinding Diameter Range: 0.5-200mm; Main Motor Power: 7.5kW; Origin: Switzerland.
Common Mistakes：
Failure to indicate "CNC" leads to classification under 846029 (non-CNC cylindrical grinding machine).
Mistakenly declaring a cylindrical grinding machine as an internal grinding machine, leading to classification under 846023.
Inconsistency between brand and model entries, affecting customs valuation.
🎯 Classification Logic
The core basis for classification is: 1) whether the machine tool uses abrasives to grind metal; 2) whether it is used for external cylindrical surface processing; 3) whether it is equipped with a CNC system. Reference should also be made to the Import and Export Tariff and its notes. Heading 8460 explicitly includes cylindrical grinding machines, and subheading 846021 specifically refers to CNC cylindrical grinding machines. If the machine tool is multi-purpose or can grind both internal and external cylinders, it should be classified according to its main function. 846029 Other cylindrical grinding machines: Non-CNC cylindrical grinding machines without a CNC system are classified under 846029; CNC cylindrical grinding machines are classified under 846021. 846023 CNC internal grinding machines: For processing internal cylindrical surfaces, classified under 846023; for processing external cylindrical surfaces, classified under 846021. 846012 CNC surface grinding machines: For processing flat surfaces, classified under 846012; for processing external cylindrical surfaces, classified under 846021. 846040 Honing or lapping machines: Used for honing or lapping, classified under 846040; cylindrical grinding is classified under 846021. 845811 CNC horizontal lathes: Cutting with turning tools is classified under 845811; grinding with abrasives is classified under 846021. Does it use abrasives to grind metal? Does it process external cylindrical surfaces? Is it equipped with a CNC system? Can it grind internal cylinders or flat surfaces? Are the brand and model consistent with the actual item?
Basis
The core basis for classification is: 1) whether the machine tool uses abrasives to grind metal; 2) whether it is used for external cylindrical surface processing; 3) whether it is equipped with a CNC system. Reference should also be made to the Import and Export Tariff and its notes. Heading 8460 explicitly includes cylindrical grinding machines, and subheading 846021 specifically refers to CNC cylindrical grinding machines. If the machine tool is multi-purpose or can grind both internal and external cylinders, it should be classified according to its main function.
Confused Codes：
846029 - Other cylindrical grinding machines
Non-CNC cylindrical grinding machines without a CNC system are classified under 846029; CNC cylindrical grinding machines are classified under 846021.
846023 - CNC internal grinding machines
For processing internal cylindrical surfaces, classified under 846023; for processing external cylindrical surfaces, classified under 846021.
846012 - CNC surface grinding machines
For processing flat surfaces, classified under 846012; for processing external cylindrical surfaces, classified under 846021.
846040 - Honing or lapping machines
Used for honing or lapping, classified under 846040; cylindrical grinding is classified under 846021.
845811 - CNC horizontal lathes
Cutting with turning tools is classified under 845811; grinding with abrasives is classified under 846021.
Self-Check：
✓ Does it use abrasives to grind metal?
✓ Does it process external cylindrical surfaces?
✓ Is it equipped with a CNC system?
✓ Can it grind internal cylinders or flat surfaces?
✓ Are the brand and model consistent with the actual item?
❓ FAQ
What is the HS code for CNC cylindrical grinding machines? The HS code for CNC cylindrical grinding machines is 846021, belonging to Chapter 84 mechanical appliances, heading 8460 grinding machine tools, and subheading 846021 specifically refers to CNC cylindrical grinding machines. How to distinguish CNC cylindrical grinding machines from non-CNC cylindrical grinding machines? The key is whether a CNC system is equipped. With a CNC system, classify under 846021; without, classify under 846029. When declaring, the brand and model of the CNC device must be provided. What is the classification difference between CNC cylindrical grinding machines and CNC internal grinding machines? Cylindrical grinding machines process the external surface of the workpiece and are classified under 846021; internal grinding machines process the inner hole of the workpiece and are classified under 846023. Judgment should be based on the processing object. If a machine tool can grind both external and internal cylinders, how should it be classified? Classify according to the main function. If the main function is external cylindrical grinding, classify under 846021; if the main function is internal cylindrical grinding, classify under 846023. Technical documentation must be provided. What elements are required to declare a CNC cylindrical grinding machine? It is necessary to declare the product name, brand, model, processing object, CNC device, grinding diameter range, power, origin, etc. For details, see the customs declaration form filling specifications. How to check the tax rate for CNC cylindrical grinding machines? The tax rate must be determined based on origin, trade agreements, etc. You may consult the Import and Export Tariff or ask customs. Note that tax rates may change, and the latest version shall prevail. What are the precautions for importing used CNC cylindrical grinding machines? Used mechanical and electrical products require pre-shipment inspection and must comply with safety and environmental requirements. When declaring, indicate "used" and provide relevant certificates. What are the regulatory conditions for CNC cylindrical grinding machines? Generally, an automatic import license (O certificate) is required. The specific regulatory conditions depend on the commodity and origin. It is recommended to check the latest customs announcements.
Q: What is the HS code for CNC cylindrical grinding machines?
A: The HS code for CNC cylindrical grinding machines is 846021, belonging to Chapter 84 mechanical appliances, heading 8460 grinding machine tools, and subheading 846021 specifically refers to CNC cylindrical grinding machines.
Q: How to distinguish CNC cylindrical grinding machines from non-CNC cylindrical grinding machines?
A: The key is whether a CNC system is equipped. With a CNC system, classify under 846021; without, classify under 846029. When declaring, the brand and model of the CNC device must be provided.
Q: What is the classification difference between CNC cylindrical grinding machines and CNC internal grinding machines?
A: Cylindrical grinding machines process the external surface of the workpiece and are classified under 846021; internal grinding machines process the inner hole of the workpiece and are classified under 846023. Judgment should be based on the processing object.
Q: If a machine tool can grind both external and internal cylinders, how should it be classified?
A: Classify according to the main function. If the main function is external cylindrical grinding, classify under 846021; if the main function is internal cylindrical grinding, classify under 846023. Technical documentation must be provided.
Q: What elements are required to declare a CNC cylindrical grinding machine?
A: It is necessary to declare the product name, brand, model, processing object, CNC device, grinding diameter range, power, origin, etc. For details, see the customs declaration form filling specifications.
Q: How to check the tax rate for CNC cylindrical grinding machines?
A: The tax rate must be determined based on origin, trade agreements, etc. You may consult the Import and Export Tariff or ask customs. Note that tax rates may change, and the latest version shall prevail.
Q: What are the precautions for importing used CNC cylindrical grinding machines?
A: Used mechanical and electrical products require pre-shipment inspection and must comply with safety and environmental requirements. When declaring, indicate "used" and provide relevant certificates.
Q: What are the regulatory conditions for CNC cylindrical grinding machines?
A: Generally, an automatic import license (O certificate) is required. The specific regulatory conditions depend on the commodity and origin. It is recommended to check the latest customs announcements.
⚠️ Disclaimer: HS code classification, declaration elements, tariff rates and regulatory conditions on this page are for reference only and do not constitute legal advice on customs classification. Tariff rates and regulations are subject to change; the latest announcements from the General Administration of Customs and on-site determinations shall prevail. Please consult professional customs brokers or customs authorities before import/export.