I. Product Introduction

Stainless steel balls are high-precision spherical base components, manufactured through precision processes including cold heading, grinding, polishing, quenching, and passivation using high purity stainless steel material. These products offer comprehensive properties such as high roundness, high brightness, corrosion resistance, non-rusting, wear resistance, high strength, and non-magnetic/weak magnetic properties, classifying them as industrial general-purpose precision accessories. The products are produced in strict accordance with international standards ISO, ASTM, and DIN, featuring high dimensional accuracy, few surface defects, and strong stability. They are widely applicable in global industrial scenarios including machinery, valves, bearings, fluid equipment, medical devices, food equipment, precision instruments, and automation equipment, and are in high demand for foreign trade exports.

Chapter Two: Core Advantages and Features of the Product

- Superior corrosion and rust resistance: After passivation treatment, it has excellent antioxidant, alkali-resistant, and marine salt mist corrosion resistance. It can be used stably in humid, outdoor, chemical, and coastal environments for a long time without easy oxidation, discoloration, flaking, or rusting.

- High precision spherical, high concentricity: precision grinding process, extremely small roundness error, surface mirror polishing, smooth without burrs, no sand holes, no dents, rotation smooth, low noise, and extremely high stability.

- High strength and wear resistance, not easy to deform: dense and uniform material, stable hardness, resistant to compression, impact and friction. Long-term rolling, bearing pressure, and reciprocating movement are not easy to deform and have extremely low wear rate, significantly extending the service life.

Clean and environmentally friendly, non-toxic: Materials meet food-grade and medical-grade contact standards, with no leaching, no contamination, easy to clean, and high-temperature resistance, suitable for high-purity environments such as food machinery, medical equipment, and beauty appliances.

- Optional Weak Magnetic/Non-Magnetic: Can be degaussed, meeting the anti-magnetic requirements for precision electronics, instruments, sensors, and precision equipment.

- High temperature resistance and aging resistance: Excellent high-temperature performance, resistant to thermal expansion and contraction deformation, suitable for long-term continuous operation of high-temperature equipment, fluid valves, and industrial automation equipment.

- Comprehensive specifications and strong customization: Precision grades, dimensions, materials, and surface treatments can all be customized as required, catering to different operational needs such as lightweight, heavy-duty, precision, and corrosion resistance.

Good consistency and interchangeability: The dimensions of the batch products are uniform, hardness is consistent, and performance is stable, fully meeting the standards for automated assembly, mass installation, and export matching.

Section 3: Main Material Classification and Performance Description (Full Coverage for International Trade)

- 201 Stainless Steel: High cost-performance ratio, good toughness, excellent polishing effect, suitable for indoor dry conditions, general hardware, decoration, light industrial accessories, toys, and daily necessities accessories, meeting regular non-corrosive operation requirements.

- 304 Stainless Steel (Standard General Model): 18-8 standard stainless steel with compliant chrome and nickel content, offering balanced corrosion and rust resistance, the highest versatility, suitable for the majority of industrial machinery, bearings, valves, automation, and general equipment, and being the main material for foreign trade exports.

- 316 / 316L Stainless Steel (High-end Corrosion-Resistant): Added molybdenum element, extremely resistant to acid and alkali, seawater, salt mist, and chemical corrosion, suitable for marine equipment, chemical fluids, medical, food, and high-end precision equipment. Excellent low-temperature performance, not prone to intergranular corrosion.

- 420 Stainless Steel: High hardness, wear resistance, high hardness after quenching, strong mechanical strength, suitable for load-bearing, wear-resistant structural parts, bearing components, and wear-resistant mechanical accessories.

- 440C Stainless Steel (Super Hard Wear-Resistant): Ultra-high hardness, super wear resistance, strong pressure resistance, suitable for high-end precision bearings, heavy machinery, precision instruments, and high-load wear-resistant conditions.

4. Precision Grade & Model Specification System

Precision Grade: G10 / G16 / G20 / G28 / G40 / G60 / G100 / G200 / G500 (covering ultra-high precision to commercial general grade)

Size specification range: 0.5mm - 50.8mm, full specifications available, supports non-standard customization for large sizes and special tolerance sizes.

Execution Standard: International General Standards ISO3290, ASTM F2094, DIN5401; can provide third-party inspection reports, material certificates, and tolerance reports.

5. Overall Weight Parameters

Stainless steel ball weight precisely corresponds to diameter and material density, with stable material density (standard density of 7.85g/cm³), ensuring uniform weight in the batch with no deviation or weight difference.

Small diameter steel balls are lightweight and sensitive in rotation; large diameter steel balls have high density and stable weight, suitable for various working conditions such as balancing, sealing, pressure-bearing, and stable structures. Accurate parameter tables for all specifications are available for customer structural design and selection.

6. Load-bearing and compressive properties

Stainless steel ball structure is dense and evenly stressed, with balanced force points in spherical structure, exhibiting excellent compressive, impact, and extrusion resistance properties.

High precision G-grade steel balls have strong bearing capacity, are not easy to deform under load, not prone to pitting, and not prone to cracking; high hardness materials (420/440C) can withstand heavy loads, reciprocating impacts, and high-frequency extrusion conditions for a long time, suitable for heavy-duty bearings, heavy machinery, and high-pressure valve bearing structures.

Customized load-bearing steel balls with corresponding hardness, precision, and material grade can be provided according to customer load requirements.

Section 7: Power Source / Compatibility with Working Methods

Stainless steel balls are mechanical passive motion accessories, which require no electricity or power drive and operate through the coordination of the mechanical structure.

- Work relying on gravity, fluid pressure, mechanical thrust, and rolling friction

- Compatible with reciprocating motion of automated machinery, rotational motion, fluid opening and closing, rolling transmission, positioning sliding, and other structures

- Zero energy consumption, zero noise, extremely low failure rate, suitable for all-weather continuous operation equipment of various types

Section 8: Power Description

This product is a precision mechanical component with zero energy consumption, featuring no motor, no power consumption, and no power support required. It belongs to zero-energy precision accessories. It can be matched with various mechanical equipment of different power levels for use without increasing the energy consumption of the equipment or affecting the main power parameters.

Chapter 9: Core Function Description

- Rolling transmission function: Reduce equipment friction coefficient, improve smoothness of mechanical operation, and reduce equipment wear

- Sealed flow control function: High precision spherical fit of valve ball, tight sealing, leak-proof, pressure-resistant sealing, controlling fluid on-off

- Load-bearing support function: As bearing ball and sliding support point, bearing the pressure of mechanical structure

- Positioning and Limiting Function: Precision spherical fit for accurate positioning, locking, and limiting of the equipment

- Counterweight balancing function: Even and stable self-weight, used for equipment weighting, balancing, and shock-absorbing structure

- Abrasion and jam-proof function: high-gloss surface, anti-jamming, anti-sticking, and resistant to long-term reciprocating movement

- Corrosion and weather resistance: Suitable for humid, acidic and alkaline, outdoor, marine, and high-temperature complex conditions

Chapter 10: Recommended Uses & Applicable Industries (Focus on Foreign Trade)

- Valve fluid industry: ball valve core, check valve steel ball, fluid control valve, hydraulic valve, pneumatic valve sealing core parts

Bearings Transmission Industry: Precision Bearings, Miniature Bearings, Sliding Bearings, Wheel, caster Transmission Ball Bearings

Precision Instruments and Equipment: Measuring Instruments, Sensors, Precision Machinery, Automation Equipment, Precision Accessories

- Food & Medical Industry: Food Machinery, Water Purification Equipment, Medical Equipment, Beauty Appliances, Sterilization Equipment Accessories (304/316 Special Use)

- Marine Chemical Industry: Marine equipment, ship accessories, chemical fluid equipment, anti-corrosion pipeline systems (316L专用)

Hardware & Light Industry: hardware accessories, lighting, sliding tracks, locks, handicrafts, daily necessities accessories

Automotive Electromechanical Industry: automotive parts, motors, miniature motors, transmission systems, shock-absorbing structures

High-end Customization Field: Scientific Research Experiments, Precision Testing Equipment, Export High-end Complete Equipment Sets

Chapter 11: Warranty and After-Sales Information

- Warranty period: 12 months under normal operating conditions, 18 months for high-end precision level

Quality Assurance: Full inspection upon factory dispatch, checking dimensions, roundness, finish, hardness, and material, to eliminate sand holes, cracks, ellipticity, and defective products.

- Documentation Support: Material certificates, factory inspection reports, tolerance inspection reports, customs clearance documents, compliance documents available, catering to European and American export certification requirements.

Customized Services: Support customization for non-standard sizes, special accuracy, special hardness, and special surface treatment. Capable of handling small batch samples and large volume orders.

- After-sales protection: Replacement for quality issues upon delivery, adjustment for size deviations, and after-sales service for process issues, full tracking for foreign trade orders, stable delivery with guaranteed quality