Find HS Code and trade information for rotating ring

Rotating Ring

A rotating ring is a mechanical component featuring a circular band capable of continuous rotation relative to a fixed or rotating counterpart. These components are utilized across a diverse range of applications demanding smooth, precise rotational movement.

Material

Rotating rings are manufactured from a variety of materials chosen based on load, speed, environmental conditions, and desired lifespan. Common materials include:

• Metals: Steel (various alloys including stainless steel), bronze, brass, aluminum alloys, and titanium alloys are frequently employed for their strength, durability, and machinability.
• Polymers: Engineering plastics like PTFE (Teflon), PEEK, nylon, and UHMW polyethylene are used where low friction, light weight, and corrosion resistance are critical.
• Ceramics: Silicon nitride and alumina are used in high-temperature, high-wear, and corrosive environments.
• Composites: Carbon fiber reinforced polymers offer high strength-to-weight ratios.

Purpose & Function

The primary function of a rotating ring is to facilitate rotational movement while minimizing friction and wear. They accomplish this through several mechanisms:

• Bearing Surface: They often act as a bearing surface, allowing relative rotation between two components.
• Sealing: Rotating rings can incorporate sealing features to prevent leakage of fluids or gases.
• Electrical Contact: Some designs include conductive materials to enable electrical continuity during rotation (slip rings).
• Positioning: They can be integrated into positioning systems to provide precise angular control.
• Torque Transmission: Rotating rings can transmit torque between shafts or components.

Usage Scenarios

Rotating rings are found in a broad spectrum of applications:

• Robotics: Joints and actuators requiring continuous rotation.
• Aerospace: Aircraft control surfaces, engine components, and gimbal systems.
• Industrial Machinery: Rotating tables, indexing mechanisms, and packaging equipment.
• Medical Devices: Surgical robots, imaging equipment, and prosthetic limbs.
• Renewable Energy: Wind turbine pitch control systems and solar tracking systems.
• Security & Surveillance: Pan-tilt camera systems.
• Slip Rings: Electrical power and signal transmission in rotating equipment.
• Turntables: Supporting and enabling smooth rotation of the platform.

Common Types

• Ball Bearings with Rotating Rings: Utilize ball bearings to reduce friction and support the load.
• Sleeve Bearings with Rotating Rings: Employ a sleeve bearing surface for lower speed, higher load applications.
• Fluid Bearings with Rotating Rings: Utilize a thin film of fluid to separate the rotating surfaces, offering very low friction and high precision.
• Magnetic Bearings with Rotating Rings: Utilize magnetic levitation to eliminate contact between the rotating surfaces, offering extremely low friction and high speed capabilities.
• Slip Rings: Conductive rings used to transmit electrical power and signals to rotating components. These can be carbon brush-based or brushless.
• Rotary Indexing Rings: Designed for precise intermittent rotational motion, often used in automated machinery.
• Thin-Section Rotating Rings: Lightweight designs for aerospace and robotics applications.
• Sealing Rotating Rings: Incorporate seals to prevent leakage in rotating systems.

Rotating rings are components utilized in various mechanical systems, often found within bearings, gears, or transmission shafts. Their function revolves around enabling rotational movement while supporting loads or transmitting power. They can be constructed from materials like iron, steel, or other alloys, depending on the application's requirements.

The following HS codes from the provided reference material may be relevant:

• 8482990500: This code covers “Ball or roller bearings, and parts thereof: Parts: Other: Inner or outer rings or races: For ball bearings”. This is applicable if the rotating ring is specifically designed as a component for ball bearings. The total tax rate is 64.9%, comprised of a 9.9% base tariff and a 25.0% additional tariff, increasing to 30.0% after April 2, 2025.
• 8482992580: This code covers “Ball or roller bearings, and parts thereof: Parts: Other: Inner or outer rings or races: Other Other”. This applies to inner or outer rings or races not specifically designated for ball bearings. The total tax rate is 60.8%, consisting of a 5.8% base tariff and a 25.0% additional tariff, rising to 30.0% after April 2, 2025.
• 8483908040: This code covers “Transmission shafts (including camshafts and crankshafts) and cranks; bearing housings, housed bearings and plain shaft bearings; gears and gearing; ball or roller screws; gear boxes and other speed changers, including torque converters; flywheels and pulleys, including pulley blocks; clutches and shaft couplings (including universal joints); parts thereof: Toothed wheels, chain sprockets and other transmission elements presented separately; parts: Other: Other Parts of universal joints”. If the rotating ring is a component of a universal joint, this code may be applicable. The total tax rate is 57.8%, consisting of a 2.8% base tariff and a 25.0% additional tariff, increasing to 30.0% after April 2, 2025.
• 7326908688: This code covers “Other articles of iron or steel: Other: Other: Other: Other Other”. This code may be relevant if the rotating ring is made of iron or steel and doesn't fall under other specific classifications. The total tax rate is 82.9%, comprised of a 2.9% base tariff and a 25.0% additional tariff, with a further 25% additional tariff applied to steel and aluminum products.
• 7326908605: This code covers “Other articles of iron or steel: Other: Other: Other: Other Rods for electrical grounding”. If the rotating ring is specifically a rod used for electrical grounding and made of iron or steel, this code may be applicable. The total tax rate is 82.9%, consisting of a 2.9% base tariff and a 25.0% additional tariff, with a further 25% additional tariff applied to steel and aluminum products.

It is important to verify the material composition of the rotating ring, as the 7326 codes have specific tariffs for steel and aluminum products.