6811 Deep Groove Ball Bearings
| 6811 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 6811 | Ball Number | 22 |
| d | 55 | Ball Size | 3.969 |
| D1 | 72 | Dynamic Load Co(N) | 8600 |
| B | 9 | Static Load Cor(N) | 7400 |
| R | 0.3 | Grease Speed | 11000 |
| Weight(Kg) | 0.068 | Oil Speed | 13000 |
6811 Deep Groove Ball Bearing | Open, ZZ, 2RS Ultra-Thin Precision Bearings
The 6811 deep groove ball bearing is a large-bore ultra-thin precision component belonging to the 6800 series, engineered with thickened raceway grooves and optimized rolling elements to boost structural rigidity and medium-heavy load capacity. Retaining the series’ classic ultra-slim lightweight structure, this single-row thin-wall bearing effectively solves space-limited installation challenges for large compact precision machinery without sacrificing operational stability. It delivers low-friction rotation, excellent anti-fatigue performance and consistent dimensional accuracy, supporting long-term ultra-quiet, stable high-speed operation under continuous medium-heavy cyclic loads. The 6811 series offers three mainstream industrial configurations: open type, 6811ZZ double metal shield type and 6811-2RS double rubber sealed type, with five industrial-grade materials to adapt to economical, sanitary, wear-resistant and corrosive complex industrial environments.
6811 Open / ZZ / 2RS Structural Features
6811 Open Type: The unsealed open structure enables unobstructed air circulation and efficient heat dissipation, eliminating thermal accumulation during prolonged high-speed continuous operation. It supports convenient grease replacement and daily routine maintenance with zero extra rotational resistance. Designed for clean, dry indoor workshops and fully enclosed slim precision equipment, it maintains stable running accuracy and steady performance during long-cycle medium-heavy load operation.
6811ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this professional dust-proof bearing effectively blocks dry fine dust, floating micro particles and industrial debris. The non-contact protective design preserves original high-speed precision and rotational smoothness with minimal friction loss. Featuring reliable long-term durability and superior cost performance, 6811ZZ bearings are widely applied in dry precision automation systems, large slim high-power motors, precision electronic devices and compact heavy-duty transmission machinery.
6811-2RS 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 mildly harsh workshop and outdoor working conditions for large compact high-precision electromechanical equipment.
6811 Bearing Material Performance
Carbon Steel: High cost-performance standard industrial material with uniform hardness and stable anti-fatigue properties. It delivers reliable wear resistance and smooth high-speed rotation for conventional medium-heavy load precision equipment, providing optimal cost efficiency for mass industrial and electronic batch 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, suitable for food processing machinery, sanitary equipment and slim precision devices.
316 Stainless Steel: Marine-grade corrosion-resistant material with strong tolerance to acid, alkali and salt spray. It withstands mild chemical erosion and coastal high humidity, ideal for marine precision parts, sanitary processing equipment 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, maintaining accurate dimensional stability during long-term continuous precision operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It sustains precise, stable operation under severe wear and corrosive environments, customized for high-end ultra-thin precision industrial equipment.
Core Advantages And Industrial Applications
The 6811 deep groove ball bearing features an ultra-thin space-saving structure, lightweight design, enhanced medium-heavy load capacity, ultra-low noise and durable high-speed precision performance. Three diversified sealing structures and five professional material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion precision application scenarios. It is extensively used in large slim precision motors, industrial automation transmission systems, smart device components, consumer electronics, miniature medical devices and food processing machinery, providing compact, low-maintenance and high-efficiency precision rotation solutions for modern space-limited medium-heavy load mechanical systems.
