FR5 Flange Ball Bearings
| FR5 Flange Ball Bearings | |||
|---|---|---|---|
| Part Number | FR5 | Ball Number | 9 |
| d | 7.938 | Ball Size | 2.381 |
| R | 0.3 | Dynamic Load Co(N) | 1450 |
| D/D1 | 15.875/17.9 | Static Load Cor(N) | 780 |
| B/C | 4.978/0.76 | Grease Speed | 28000 |
| Weight(Kg) | 0.0085 | Oil Speed | 33000 |
FR5 Flange Deep Groove Bearing | Open, ZZ, 2RS High Precision Miniature Bearing
The FR5 flange deep groove ball bearing is a high-precision miniature flange bearing engineered for ultra-compact, space-limited micro mechanical systems requiring lightweight structure, precise positioning and stable high-speed rotation. Featuring a compact integrated flange and finely polished deep groove raceways, this miniature bearing delivers accurate dimensional stability, ultra-low noise and smooth rotary performance during long-cycle continuous operation. The one-piece flange eliminates extra locking fixtures, accelerates precision assembly, and effectively prevents shaft offset and axial play in tiny precision equipment layouts. Available in three standard industrial versions: FR5 open type, FR5ZZ double metal shield type and FR5-2RS double rubber sealed type, it reliably adapts to dry, dusty, humid and mildly corrosive working environments. Manufactured with carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, the FR5 fully meets economical, sanitary, high-wear and anti-corrosion precision micro machinery application requirements.
FR5 Open / ZZ / 2RS Structural Features
FR5 Open Type: The unsealed open structure ensures unobstructed air circulation and efficient heat dissipation, avoiding thermal accumulation and precision degradation during prolonged high-speed micro operation. It supports easy grease refilling and tool-free routine maintenance without increasing rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed miniature precision machinery, it maintains stable running accuracy and long-term operational consistency.
FR5ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the FR5ZZ 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 reliable durability and excellent cost performance, this model is widely applied in dry industrial environments and long-running high-speed miniature precision equipment.
FR5-2RS 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 humid, dusty and complex indoor and outdoor micro equipment scenarios.
FR5 Bearing Material Performance
Carbon Steel: High cost-performance industrial base material with uniform hardness and stable anti-fatigue properties. Carbon steel FR5 bearings provide reliable wear resistance and smooth high-speed rotation, perfect for mass production and budget-sensitive miniature automation projects.
304 Stainless Steel: Food-grade rust-resistant stainless steel with excellent oxidation resistance. It resists micro corrosion in humid and open environments, suitable for miniature food processing parts, compact medical devices and sanitary-grade micro precision systems.
316 Stainless Steel: Marine-grade anti-corrosion material with strong tolerance to salt spray, acid and alkali erosion. It maintains stable structural precision in coastal high-humidity and light chemical environments for miniature marine instruments and micro chemical equipment.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It delivers stable wear resistance and precise dimensional stability during continuous high-speed cyclic operation.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance. It withstands severe friction wear and weak corrosive conditions, ensuring long-term accurate and stable rotation for high-end micro precision mechanical systems.
Core Advantages And Industrial Applications
The FR5 miniature flange bearing features an ultra-compact lightweight structure, precise flange positioning, ultra-quiet operation and durable high-speed precision. Multiple sealing grades and diversified material options fully cover industrial demands for economy, sanitation, wear resistance and corrosion protection. Widely applied in tiny high-speed miniature motors, micro drone components, slim robotic micro joints, portable optical instruments, miniature transmission systems, small precision power tools and compact medical micro devices, the FR5 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.
