6305 Deep Groove Ball Bearings

6305 Deep Groove Ball Bearings
Part Number 6305 Ball Number 8
d 25 Ball Size 11.112
D1 62 Dynamic Load Co(N) 22400
B 17 Static Load Cor(N) 11500
R 1.1 Grease Speed 13000
Weight(Kg) 0.232 Oil Speed 16000

6305 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Bearings

The 6305 deep groove ball bearing is a high-performance mid-size precision bearing in the 6300 series, featuring upgraded rolling elements and thickened raceway structure for improved load capacity and structural rigidity. This single-row deep groove ball bearing delivers stable radial and axial load resistance, superior anti-fatigue performance and low-friction operation, supporting long-term low-noise, high-speed rotation under medium cyclic loads. Balancing compact size and excellent mechanical stability, it serves as a core rotary component for medium-duty precision machinery and automated electromechanical systems. The 6305 series provides three standard configurations: open type, 6305ZZ double metal shield type and 6305-2RS double rubber sealed type, with five industrial-grade materials adaptable to economical, sanitary, wear-resistant and corrosive industrial working environments.

6305 Open / ZZ / 2RS Structural Features

6305 Open Type: The unsealed open structure ensures unobstructed air circulation and efficient heat dissipation, effectively avoiding heat accumulation during continuous high-speed operation. It allows convenient grease replacement and daily maintenance without extra rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision equipment, it maintains stable running accuracy and consistent performance during long-cycle medium-load operation.

6305ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this professional 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. Featuring reliable durability and outstanding cost performance, 6305ZZ bearings are widely applied in dry automated production equipment, medium-sized industrial motors, precision transmission systems and general electromechanical devices.

6305-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to comprehensively isolate 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 and mild outdoor harsh working conditions for precision mechanical equipment.

6305 Bearing Material Performance

Carbon Steel: Standard cost-effective industrial material with uniform hardness and stable anti-fatigue properties. It provides reliable wear resistance and smooth high-speed rotation for conventional medium-load machinery, delivering excellent cost performance for mass industrial and commercial applications.

304 Stainless Steel: Food-grade stainless steel with superior oxidation and rust resistance. It prevents surface corrosion and precision degradation in humid and open environments, ideal for food processing machinery, sanitary equipment and daily precision mechanical devices.

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

420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It features stable wear and impact resistance, ensuring consistent dimensional accuracy during long-cycle continuous medium-load operation.

440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It maintains precise and stable operation under severe wear and complex corrosive environments, customized for high-end industrial precision equipment.

Core Advantages And Industrial Applications

The 6305 deep groove ball bearing features upgraded medium-load capacity, compact structural design, ultra-low noise and durable high-speed performance. Three diversified sealing structures and five professional material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion industrial application scenarios. It is extensively used in medium-sized drive motors, precision testing instruments, industrial automation equipment, consumer electronics, small household appliances, miniature medical devices, food processing machinery and general precision transmission systems, providing stable, low-maintenance and high-efficiency precision rotation solutions for modern medium-load mechanical systems.

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