F6903 Flange Ball Bearings
| F6903 Flange Ball Bearings | |||
|---|---|---|---|
| Part Number | F6903 | Ball Number | 12 |
| d | 17 | Ball Size | 2.78 |
| R | 0.3 | Dynamic Load Co(N) | 2680 |
| D/D1 | 30/32 | Static Load Cor(N) | 1580 |
| B/C | 7/1 | Grease Speed | 23000 |
| Weight(Kg) | 0.0156 | Oil Speed | 27000 |
F6903 Flange Deep Groove Bearing | Open, ZZ, 2RS High Precision Thin Section Bearing
The F6903 flange deep groove ball bearing is a high-precision ultra-thin miniature bearing tailored for ultra-slim, space-constrained micro mechanical systems requiring improved load capacity and stable long-term high-speed rotation. Featuring an integrated one-piece flange and finely polished deep groove raceways, this thin-section bearing delivers superior dimensional stability, ultra-low vibration and consistent rotary smoothness during continuous cyclic operation. The integrated flange structure eliminates extra positioning fasteners, streamlines rapid assembly, and effectively prevents shaft offset and axial play in compact precision equipment layouts. Available in three standard industrial versions: F6903 open type, F6903ZZ double metal shield type and F6903-2RS double rubber sealed type, it reliably operates in dry, dusty, humid and mildly corrosive working environments. Offered in carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, the F6903 fully meets economical, sanitary, high-wear and anti-corrosion precision industrial application requirements.
F6903 Open / ZZ / 2RS Structural Features
F6903 Open Type: The unsealed open structure ensures unobstructed air circulation and efficient heat dissipation, avoiding thermal accumulation and precision degradation during prolonged high-speed operation. It supports convenient grease refilling and tool-free routine maintenance without increasing rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed micro precision machinery, it maintains stable running accuracy and long-cycle operational consistency.
F6903ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the F6903ZZ effectively blocks fine dry dust, floating particles and micro industrial debris. The non-contact protective design retains original high-speed smoothness and micro precision with minimal friction loss. Featuring stable durability and excellent cost performance, this model is widely applied in dry industrial environments and long-running high-speed micro precision automation equipment.
F6903-2RS Double Rubber Seals: The fully sealed 2RS structure adopts double-sided contact rubber seals to comprehensively isolate moisture, water splashes, oil mist and corrosive fine dust. It tightly locks internal lubricating grease to prevent leakage, oxidation and aging, realizing long-term maintenance-free operation for complex humid, dusty and semi-outdoor industrial scenarios.
F6903 Bearing Material Performance
Carbon Steel: High cost-performance industrial base material with uniform hardness and stable anti-fatigue properties. Carbon steel F6903 bearings provide reliable wear resistance and smooth high-speed rotation, perfectly suitable for mass production and budget-sensitive precision automation projects.
304 Stainless Steel: Food-grade rust-resistant stainless steel with excellent oxidation resistance. It withstands mild humid corrosion, making it ideal for food processing accessories, medical devices and sanitary-grade precision mechanical systems.
316 Stainless Steel: Marine-grade anti-corrosion stainless steel with strong resistance to salt spray, acid and alkali erosion. It retains stable structural precision in coastal high-humidity and light chemical environments for marine instruments and miniature chemical equipment.
420 Stainless Steel: High-toughness martensitic stainless steel with balanced surface hardness and corrosion resistance. It delivers stable wear resistance and dimensional stability during repeated high-speed cyclic operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance. It resists heavy friction and weak corrosive conditions, ensuring long-term accurate and stable rotation for high-end micro precision mechanical systems.
Core Advantages And Industrial Applications
The F6903 ultra-thin flange bearing features an optimized slim reinforced structure, upgraded load capacity, integrated flange positioning, ultra-quiet operation and durable high-speed precision. Multiple sealing grades and diversified material options fully cover industrial demands for cost efficiency, sanitation, wear resistance and corrosion protection. Widely applied in slim high-speed miniature motors, micro drone precision assemblies, compact robotic micro joints, portable optical detection instruments, micro transmission systems, mini precision power tools and compact medical automation devices, the F6903 serves as a core rotary and positioning component for ultra-space-limited micro mechanical structures. It provides high-efficiency, low-noise and low-maintenance precision rotation solutions for modern miniaturized industrial, commercial and sanitary precision automation equipment.
