Wholesale Steel Ball

Wholesale Steel Ball Manufacturer and Supplier

Shanghai Yinin Bearing & Transmission Company is a China-based wholesale steel ball manufacturer and supplier with over 20 years of experience in the bearing industry. Since 1999, we have evolved from an export agent for domestic bearing brands into an integrated enterprise that designs, produces, and sells bearings and precision components. Our steel balls are manufactured in our own facilities in Jiangsu Province, where we control quality from raw material to final inspection.

We supply steel balls for a wide range of applications, including deep groove ball bearings, miniature bearings, angular contact bearings, thrust bearings, and custom non-standard bearings. Our product range covers chrome steel, stainless steel, ceramic, and special alloy steel balls in various diameters and accuracy grades. Whether you need standard sizes for mass production or custom specifications for a specialized project, we can provide a reliable supply from our factory.

Our Steel Ball Range and Applications

Steel balls are critical components that reduce friction and improve movement efficiency in mechanical equipment. We offer a comprehensive range that fits different operational demands:

• Chrome Steel Balls (AISI 52100): The most common type for general bearing applications, offering high hardness and wear resistance. Ideal for deep groove ball bearings, motor bearings, and automotive components.
• Stainless Steel Balls (AISI 440C, 304, 316): Provide excellent corrosion resistance and can operate in high temperatures up to 300°C. Suitable for food processing, chemical pumps, marine equipment, and medical devices.
• Ceramic Balls (Si3N4, ZrO2): Lightweight, low friction, and resistant to extreme temperatures and vacuum environments. Used in high-speed spindles, aerospace, and vacuum applications.
• Special Alloy Steel Balls: For high-load or high-vibration environments, we offer reinforced steel balls made from high-strength alloys with optimized heat treatment.

Our steel balls are available in diameters from 1 mm to 50 mm and in accuracy grades from G10 to G1000, depending on your application requirements. We also supply balls with special coatings such as nickel plating, chrome plating, or other surface treatments for enhanced corrosion resistance.

Engineering and Customization Support

As a manufacturer, we understand that each application has unique demands. Our technical team works with you to select the right material, grade, and surface finish for your specific operating conditions. We can customize steel balls for:

• High-temperature environments: We offer stainless steel and special alloy balls that maintain hardness and stability at elevated temperatures, using precise heat treatment processes.
• Corrosive or humid conditions: Our 440C stainless steel balls and coated options provide long-term resistance to rust and chemical attack.
• High-speed and low-noise applications: We produce high-precision balls with tight tolerances to ensure smooth, quiet operation in spindles and motors.
• Non-standard sizes and materials: We can produce custom diameters, materials, and tolerances to match your drawings or samples.

Our engineering team also provides guidance on ball selection for new product development, helping you avoid premature failure and optimize performance.

Quality Assurance and Testing

Quality is the foundation of our manufacturing process. We conduct inspections after each production stage, and finished steel balls undergo full inspection according to your requirements and international standards. Our quality control includes:

Our factory is equipped with modern precision measuring tools, and our quality team of 12 technicians ensures that every batch meets your specifications. We can provide material certificates and inspection reports upon request.

Production Capacity and Delivery

With an annual production capacity of 8 million bearing sets, we have the capability to handle both small and large orders. Our minimum order quantity is 100 sets for standard sizes, and we maintain a warehouse with in-stock products that can be shipped within 3 working days. For custom orders, we work with you to establish a production schedule that meets your project timeline.

We export to the United States, European countries, Asia, and other regions, with packaging designed for safe transit. Our logistics team coordinates shipping to ensure on-time delivery.

Information We Use to Configure Your Solution

To prepare an accurate quotation and configuration, we need the following details from you:

• Application: Describe the equipment or bearing type where the steel balls will be used (e.g., deep groove ball bearing, automotive component, pump).
• Material requirement: Specify if you need chrome steel, stainless steel, ceramic, or special alloy.
• Diameter and tolerance: Provide the nominal diameter and required accuracy grade (e.g., G10, G100).
• Quantity: Indicate the total quantity and whether it is a one-time order or ongoing supply.
• Operating conditions: Mention temperature, humidity, corrosive exposure, load, and speed to help us recommend the best material and finish.
• Certification needs: Let us know if you require material certificates, inspection reports, or specific standards compliance.

With this information, our technical team will provide a tailored proposal, including product specifications, packaging, and delivery terms.

Why Choose Yinin as Your Steel Ball Supplier

We are not just a trading company; we are an integrated manufacturer with our own production base. This gives us direct control over quality, cost, and lead times. Our experience since 1999 has built a reputation for reliability and technical expertise. We offer:

• One-stop sourcing: In addition to steel balls, we supply a full range of bearings, allowing you to consolidate your purchases.
• Customization: We produce non-standard sizes and materials to meet your unique requirements.
• Technical support: Our engineers provide application advice and after-sales support.
• Consistent quality: Our QC system ensures that every batch meets international standards.

For more information about our steel ball products, visit our Steel Ball page or explore our Ball Bearing range. If you need complete bearing assemblies, check our Deep Groove Ball Bearing category.

Frequently Asked Questions