FR8 Flange Ball Bearings
| FR8 Flange Ball Bearings | |||
|---|---|---|---|
| Part Number | FR8 | Ball Number | 8 |
| d | 12.7 | Ball Size | 4.762 |
| R | 0.4 | Dynamic Load Co(N) | 5108 |
| D/D1 | 28.575/31.12 | Static Load Cor(N) | 2413 |
| B/C | 6.35/1.575 | Grease Speed | 27000 |
| Weight(Kg) | 0.013 | Oil Speed | 32000 |
FR8 Flange Deep Groove Bearing | Open, ZZ, 2RS High Precision Miniature Bearing
The FR8 flange deep groove ball bearing is a high-precision miniature flange bearing with upgraded load capacity, designed for ultra-compact, space-restricted micro mechanical systems requiring stable high-speed operation and accurate axial positioning. Built with a solid one-piece integrated flange and mirror-polished deep groove raceways, this bearing delivers excellent dimensional consistency, ultra-low vibration and smooth rotary performance during long-cycle continuous operation. The integral flange structure eliminates extra positioning fasteners, accelerates assembly efficiency, and effectively prevents shaft offset, axial play and mechanical shaking in compact precision equipment layouts. Available in three standard industrial types: FR8 open type, FR8ZZ double metal shield type and FR8-2RS double rubber sealed type, it stably adapts to dry, dusty, humid and mildly corrosive indoor and outdoor working conditions. Offered in carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, the FR8 fully meets economical, sanitary, high-wear and anti-corrosion precision micro machinery application needs.
FR8 Open / ZZ / 2RS Structural Features
FR8 Open Type: The unsealed open structure features 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 miniature precision machinery, it maintains stable running accuracy and long-term operational reliability.
FR8ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the FR8ZZ 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 superior cost performance, this model is widely used in dry industrial environments and long-running high-speed miniature precision automation equipment.
FR8-2RS 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 micro equipment working scenarios.
FR8 Bearing Material Performance
Carbon Steel: High cost-performance industrial base material with uniform hardness and stable anti-fatigue properties. Carbon steel FR8 bearings provide reliable wear resistance and smooth high-speed rotation, ideal for mass production and budget-sensitive miniature precision 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 food processing accessories, compact medical devices and sanitary-grade micro precision mechanical 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 FR8 miniature flange bearing features a reinforced compact structure, improved 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 miniature high-speed motors, micro drone power components, compact robotic micro joints, portable optical precision instruments, micro transmission systems, small precision power tools and mini medical automation devices, the FR8 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.
