FR2-6 Flange Ball Bearings

FR2-6 Flange Deep Groove Bearing | Open, ZZ, 2RS High Precision Micro Bearing

The FR2-6 flange deep groove ball bearing is a high-precision micro flange bearing engineered for ultra-compact, space-limited miniature mechanical systems requiring stable load capacity, precise flange positioning and consistent long-term high-speed operation. Featuring an integrated one-piece flange and mirror-polished deep groove raceways, this micro bearing delivers excellent dimensional accuracy, ultra-low noise and minimal vibration during continuous cyclic operation. The integral flange structure removes additional positioning hardware, streamlines fast assembly, and effectively eliminates shaft offset and axial play in compact micro equipment layouts. Available in three universal industrial configurations: FR2-6 open type, FR2-6ZZ double metal shield type and FR2-6-2RS double rubber sealed type, it works reliably in dry, dusty, humid and mildly corrosive indoor and outdoor environments. Supplied in carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, the FR2-6 covers full industrial requirements for economical, sanitary, wear-resistant and anti-corrosion micro precision applications.

FR2-6 Open / ZZ / 2RS Structural Features

FR2-6 Open Type: The unsealed open design allows unobstructed air flow and rapid heat dissipation, preventing heat accumulation and precision drop during prolonged high-speed operation. It supports convenient grease replenishment and tool-free daily maintenance without increasing rotational resistance. Suited for clean, dry indoor environments and fully enclosed micro precision machinery, it maintains stable running accuracy and long operational lifespan.

FR2-6ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the FR2-6ZZ effectively blocks fine dust, floating particles and tiny industrial debris. The non-contact protective structure preserves original high-speed smoothness and micro precision with low friction loss. With reliable durability and high cost performance, this version is widely used in dry industrial workshops and long-running miniature automated precision equipment.

FR2-6-2RS Double Rubber Seals: The fully sealed 2RS structure adopts double-sided contact rubber seals to isolate moisture, water splashes, oil mist and corrosive fine particles. It firmly locks internal lubricating grease to prevent leakage, oxidation and aging, achieving long-term maintenance-free performance for humid, dusty and complex micro mechanical working scenarios.

FR2-6 Bearing Material Performance

Carbon Steel: Cost-effective industrial base material with uniform hardness and stable anti-fatigue performance. Carbon steel FR2-6 bearings offer reliable wear resistance and smooth high-speed rotation, ideal for mass production and budget-friendly miniature automation projects.

304 Stainless Steel: Food-grade rust-proof stainless steel with outstanding oxidation resistance. It resists mild humid corrosion, perfect for food processing miniature parts, 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 precision in coastal high-humidity and light chemical environments for micro marine instruments and miniature chemical equipment.

420 Stainless Steel: High-toughness martensitic stainless steel balancing hardness and corrosion resistance. It provides stable wear resistance and dimensional stability during repeated high-speed cyclic operation.

440 Stainless Steel: Ultra-high hardness stainless steel with superior abrasion resistance. It withstands heavy friction and weak corrosion, supporting long-term accurate rotation for high-end micro precision mechanical systems.

Core Advantages And Industrial Applications

The FR2-6 micro flange bearing features an ultra-light compact structure, rigid positioning stability, ultra-quiet operation and durable high-speed precision. Multiple sealing types and diverse material grades fully meet industrial needs for cost efficiency, sanitation, wear resistance and corrosion protection. Commonly applied in ultra-miniature high-speed motors, micro drone precision components, compact robotic micro joints, portable optical testing instruments, miniature transmission systems, tiny precision power tools and small medical automation devices, the FR2-6 acts as an essential rotary and positioning component for space-constrained micro mechanical structures. It delivers low-noise, high-efficiency and low-maintenance precision rotation solutions for modern miniaturized industrial, commercial and sanitary automation equipment.