Found 6 matching results
(CN → US)
| HS Code | Official Doc | Tariff Rate | Origin | Destination | Effective Date |
|---|---|---|---|---|---|
| 8467290090 | Doc | 37.5% | CN | US | 2025-05-12 |
| 8467895090 | Doc | 37.5% | CN | US | 2025-05-12 |
| 3916905000 | Doc | 60.8% | CN | US | 2025-05-12 |
| 3916903000 | Doc | 61.5% | CN | US | 2025-05-12 |
| 3926903000 | Doc | 59.2% | CN | US | 2025-05-12 |
| 3926909910 | Doc | 42.8% | CN | US | 2025-05-12 |
Rotary File
A rotary file (also known as a burr, die grinder bit, or rotary tool bit) is a cutting tool used in rotary tools to remove material from a workpiece. They are commonly employed in metalworking, woodworking, plastics processing, and other applications requiring shaping, deburring, grinding, polishing, and cleaning.
Material
Rotary files are manufactured from a variety of materials, each suited to specific applications:
- High-Speed Steel (HSS): A common and versatile material, suitable for general-purpose applications on softer metals, wood, and plastics. Less expensive but wears faster than carbide.
- Carbide: Offers significantly higher hardness and wear resistance than HSS, making it ideal for harder materials like steel, cast iron, and abrasive plastics. More brittle than HSS.
- Diamond: Used for extremely hard materials, such as ceramics, glass, and very abrasive plastics. Provides long life and precise cutting.
- Aluminum Oxide: Abrasive material used for grinding, sharpening, and polishing.
- Silicon Carbide: Another abrasive material, often used for harder materials and providing a finer finish than aluminum oxide.
Purpose & Function
The primary function of a rotary file is material removal through abrasion or cutting. They are used for:
- Deburring: Removing sharp edges from metal parts after machining, casting, or cutting.
- Shaping: Creating specific contours, grooves, or features in a workpiece.
- Grinding: Removing excess material or smoothing surfaces.
- Polishing: Achieving a smooth, refined finish.
- Cleaning: Removing rust, scale, or other surface contaminants.
- Enlarging Holes: Carefully increasing the diameter of existing holes.
- Carving: Particularly in woodworking and plastics, for intricate detail work.
Usage Scenarios
- Metalworking: Deburring castings, shaping weld beads, removing material from molds and dies, porting cylinder heads, creating custom parts.
- Woodworking: Carving, shaping, smoothing, creating decorative details, cleaning tight areas.
- Plastics Processing: Deburring plastic parts, shaping acrylic, cleaning molds, creating custom plastic components.
- Jewelry Making: Shaping, polishing, and engraving precious metals.
- Electronics: Cleaning circuit boards, removing excess solder.
- DIY & Hobby Projects: Versatile tool for a wide range of tasks.
Common Types (Shapes & Cuts)
Rotary files are available in a wide array of shapes and cuts, each designed for specific applications:
- Straight Flute: General-purpose, suitable for roughing and material removal.
- Spiral Flute: Provides a smoother finish and more efficient chip removal, good for harder materials.
- Diamond Point: For precise detail work and creating V-shaped grooves.
- Round Nose: For creating rounded edges and contours.
- Cone: For shaping and deburring in tight areas.
- Cylindrical: For enlarging holes and creating cylindrical shapes.
- Tapered: For deburring and shaping in recessed areas.
- Flame: For shaping and creating concave surfaces.
- Ball: For creating rounded hollows and intricate details.
- Inverted Cone: For deburring and shaping in hard-to-reach areas.
- Tree Point: For aggressive material removal and creating sharp corners.
- Needle: For fine detail work and engraving.
The specific cut (single cut, double cut, coarse, medium, fine) refers to the density and pattern of the teeth, influencing the aggressiveness of the cut and the finish quality. Single cut files have fewer teeth and are better for softer materials and smoother finishes. Double cut files have more teeth and are better for harder materials and faster material removal.
Rotary files are tools for working in the hand, pneumatic, hydraulic, or with self-contained electric or nonelectric motor, and parts thereof. Based on this description, the following HS codes are relevant:
- 8467290090: This HS code falls under Chapter 84 (Nuclear reactors, boilers, machinery and mechanical appliances; parts thereof) and specifically covers tools for working in the hand, pneumatic, hydraulic, or with self-contained electric or nonelectric motor, and parts thereof. The '2900' subheading indicates 'other' tools with self-contained electric motors. The total tax rate is 37.5%, comprised of a 0.0% base tariff and a 7.5% additional tariff, increasing to 30% after April 2, 2025.
- 8467895090: This HS code also falls under Chapter 84, covering tools for working in the hand, pneumatic, hydraulic, or with self-contained electric or nonelectric motor, and parts thereof. However, the '8950' subheading specifies 'other tools' that are not self-contained electric motors. The total tax rate is also 37.5%, with a 0.0% base tariff and a 7.5% additional tariff, increasing to 30% after April 2, 2025.
It is important to determine whether the rotary file has a self-contained electric motor to correctly classify it under either 8467290090 or 8467895090.