6311 Deep Groove Ball Bearings
| 6311 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6311 | Ball Number | 10 |
| d | 55 | Ball Size | 19.050 |
| D1 | 120 | Dynamic Load Co(N) | 61800 |
| B | 29 | Static Load Cor(N) | 38000 |
| R | 2 | Grease Speed | 6800 |
| Weight(Kg) | 1.34 | Oil Speed | 8200 |
6311 Deep Groove Ball Bearing | Open, ZZ, 2RS Heavy-Duty Bearings
The 6311 deep groove ball bearing is a high-rigidity large-bore heavy-duty bearing in the 6300 series, featuring upgraded thickened raceways and enlarged rolling elements for enhanced structural strength and heavy-load endurance. This single-row deep groove ball bearing delivers excellent radial and axial load capacity, superior anti-fatigue performance and stable low-friction rotation. It reliably supports long-duration, low-noise high-speed operation under continuous heavy cyclic loads, making it a core precision component for large industrial machinery and heavy electromechanical systems. The 6311 series is available in three standard configurations: open type, 6311ZZ double metal shield type and 6311-2RS double rubber sealed type. Five industrial-grade material options fully adapt to economical, sanitary, high-wear and corrosive complex industrial working conditions.
6311 Open / ZZ / 2RS Structural Features
6311 Open Type: The unsealed open structure features unobstructed air circulation and efficient heat dissipation, effectively preventing heat accumulation during long-term high-speed operation. It allows quick grease replacement and convenient routine maintenance without generating extra rotational resistance. Ideal for clean, dry indoor environments and fully enclosed large precision equipment, it maintains stable running accuracy and consistent performance under prolonged heavy-load operation.
6311ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this dust-proof bearing effectively blocks fine dry dust, floating micro particles and workshop debris. The non-contact design retains original high-speed precision and rotational smoothness with minimal friction loss. Offering outstanding durability and high cost performance, 6311ZZ bearings are widely used in dry automated production lines, large heavy-duty industrial motors, precision transmission systems and general heavy electromechanical devices.
6311-2RS Double Rubber Seals: This fully sealed version adopts double-sided contact rubber seals to comprehensively isolate moisture, splash water, oil mist and corrosive dust. It firmly locks internal lubricating grease to prevent leakage, oxidation and aging, achieving long-term maintenance-free operation. It is perfectly suited for humid, dusty, splash-prone and harsh outdoor industrial working scenarios.
6311 Bearing Material Performance
Carbon Steel: Cost-effective standard industrial material with uniform hardness and stable anti-fatigue properties. It delivers reliable wear resistance and smooth high-speed rotation for heavy-load machinery, providing excellent cost performance for mass industrial and commercial applications.
304 Stainless Steel: Food-grade stainless steel with superior anti-oxidation and rust-proof performance. It resists surface corrosion and precision attenuation in humid environments, ideal for food processing, sanitary equipment and light industrial precision machinery.
316 Stainless Steel: Marine-grade corrosion-resistant material with strong tolerance to acid, alkali and salt spray. It withstands chemical erosion and coastal high humidity, suitable for marine equipment, sanitary processing devices and chemical precision instruments.
420 Stainless Steel: High-toughness martensitic stainless steel with balanced corrosion resistance and high hardness. It features stable wear and impact resistance, maintaining precise dimensional accuracy during long-cycle heavy-load operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance. It sustains stable and accurate operation under severe wear and complex corrosive environments, customized for high-end heavy-duty industrial precision equipment.
Core Advantages And Industrial Applications
The 6311 deep groove ball bearing features excellent heavy-load capacity, high structural rigidity, ultra-low noise and long-lasting high-speed stability. Three versatile sealing designs and five material grades cover economical, anti-rust, wear-resistant and anti-corrosion application scenarios. It is widely applied in large heavy-duty drive motors, industrial automation transmission systems, engineering machinery, precision testing instruments, food processing equipment, medical devices and outdoor industrial facilities, delivering stable, low-maintenance and high-efficiency precision rotation solutions for modern heavy-duty mechanical systems.
