Bearing Balls, 100 Pcs 440c Steel Ball Bearings, 5-10mm Precision Solid Sphere for Machinery, Industrial, DIY Projects & Bearings Replacement(8mm)

These 100 pcs bearing balls, made of 440c steel precision solid spheres with a 5-10mm size range, are engineered for reliability and high performance, designed to meet the large-quantity replacement needs of ball bearings, industrial machinery, equipment repair and small-medium DIY projects. With premium 440c steel material and strict precision processing, they deliver consistent quality for both professional industrial use and personal DIY applications.Crafted from high-grade 440c steel, these bearing balls offer excellent performance advantages over ordinary steel balls. They feature high hardness, superior wear resistance and good corrosion resistance, making them suitable for high-demand scenarios such as industrial machinery, high-speed bearings and frequent-use equipment, without easy deformation or wear even after long-term use.The 100-piece value pack is designed to meet large-quantity use needs, ideal for professionals who frequently replace bearing parts, factories with equipment maintenance demands, or DIY enthusiasts who need multiple bearing balls for projects. The 5-10mm size range covers most common small-medium bearing sizes, whether you need 5mm balls for small toys, 8mm for motors, or 10mm for industrial rollers, this size range eliminates the trouble of searching for specific sizes, saving time and effort.As precision solid spheres, each bearing ball undergoes strict quality control during production to ensure high roundness, uniform size and a polished smooth surface. This precision ensures a tight, perfect fit with ball bearings and mechanical components, reducing friction between moving parts, minimizing wear and tear, and promoting smooth, stable operation of machinery and equipment. The professional hardening treatment further enhances their durability, making them able to withstand moderate loads and frequent use.Versatile and practical, these 440c steel precision bearing balls are widely used in various scenarios. They are perfect as replacement parts for ball bearings in industrial machinery, motors, pumps, rollers and small-medium equipment, as well as for equipment maintenance, DIY mechanical projects, hobby models, toys, and more. Whether you’re a professional mechanic, factory worker, engineer, or a DIY enthusiast, these bearing balls perfectly meet your daily use and repair needs.Each bearing ball is strictly inspected before leaving the factory to ensure consistent performance, uniform size and smooth surface. The 100-piece pack is securely packaged to prevent damage during transportation, and the balls are easy to store and handle. With their premium 440c steel material, precision solid sphere design, 5-10mm size range and 100-piece value pack, these bearing balls are a cost-effective, reliable choice for anyone in need of high-quality small-medium bearing components—ideal for upgrading, repairing or building machinery and equipment.

• 100 Pcs Value Pack + 5-10mm Size Range: Comes with 100 precision bearing balls, covering 5-10mm size range to fit most small-medium bearings, meeting large-quantity replacement, repair and DIY needs.​
• Premium 440c Steel Material: Crafted from high-quality 440c steel, the bearing balls feature high hardness, wear resistance and corrosion resistance, suitable for high-demand industrial and DIY scenarios.​
• Precision Solid Sphere Design: Manufactured with strict precision standards, the solid steel balls have high roundness, uniform size and smooth surface, ensuring stable rotation and perfect fit for ball bearings.​
• Durable & Wear-Resistant: Through professional hardening and polishing treatment, the balls are not easy to deform, scratch or wear, extending the service life of bearings and related equipment.​
• Versatile Multi-Scene Use: Widely applicable for ball bearings replacement, industrial machinery, equipment repair, DIY projects, toys, rollers, motors and small-medium mechanical components.