6310 Deep Groove Ball Bearing | Open, ZZ, 2RS Heavy-Duty Bearings

The 6310 deep groove ball bearing is a premium large-bore heavy-duty model in the 6300 series, featuring upgraded oversized rolling elements and fully thickened raceway structure for maximized rigidity and load-bearing capacity. This single-row deep groove ball bearing delivers excellent radial and axial load resistance, superior anti-fatigue stability and low-friction rotational performance. It supports long-term continuous low-noise, high-speed operation under heavy cyclic loads, making it ideal for large industrial mechanical and electromechanical systems. The 6310 series offers three standard industrial configurations: open type, 6310ZZ double metal shield type and 6310-2RS double rubber sealed type. With five industrial-grade material options, it perfectly adapts to economical, sanitary, high-wear and corrosive complex industrial working environments.

6310 Open / ZZ / 2RS Structural Features

6310 Open Type: The unsealed open structure enables unobstructed air circulation and efficient heat dissipation, effectively eliminating thermal accumulation during prolonged high-speed operation. It allows quick grease replacement and hassle-free routine maintenance without adding extra rotational resistance. Designed for clean, dry indoor workshops and fully enclosed large precision machinery, it maintains stable running accuracy and consistent performance under long-cycle heavy-load working conditions.

6310ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this heavy-duty dust-proof bearing effectively isolates fine dry dust, floating micro particles and workshop debris. The non-contact design preserves original high-speed precision and rotational smoothness with minimal friction loss. Featuring outstanding durability and high cost performance, 6310ZZ bearings are widely applied in dry automated production lines, large industrial heavy-duty motors, precision transmission systems and heavy electromechanical equipment.

6310-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to comprehensively block moisture, splash water, oil mist and corrosive fine dust. It tightly locks internal lubricating grease to prevent leakage, oxidation and aging, realizing long-term maintenance-free operation. It perfectly adapts to humid, dusty, splash-prone and harsh outdoor industrial working scenarios for heavy-duty precision equipment.

316 Stainless Steel: Premium marine-grade corrosion-resistant material with strong acid, alkali and salt spray tolerance. It withstands mild chemical erosion and coastal high humidity conditions, ideal for marine auxiliary equipment, sanitary processing devices and chemical precision instruments.