FR188 Flange Ball Bearings
| FR188 Flange Ball Bearings | |||
|---|---|---|---|
| Part Number | FR188 | Ball Number | 7 |
| d | 6.35 | Ball Size | 2.381 |
| R | 0.15 | Dynamic Load Co(N) | 1080 |
| D/D1 | 12.7/13.894 | Static Load Cor(N) | 440 |
| B/C | 3.175/0.584 | Grease Speed | 40000 |
| Weight(Kg) | 0.0010 | Oil Speed | 50000 |
FR188 Flange Deep Groove Bearing | Open, ZZ, 2RS High Precision Miniature Bearing
The FR188 flange deep groove ball bearing is a popular high-precision miniature flange bearing widely used in compact micro mechanical systems requiring stable load capacity, accurate flange positioning and long-term high-speed rotary stability. Built with an integrated one-piece flange and ultra-fine polished deep groove raceways, this bearing delivers excellent dimensional consistency, ultra-low noise and minimal vibration during continuous cyclic operation. The integrated flange design removes extra positioning fasteners, simplifies rapid assembly, and effectively prevents shaft offset and axial play in tight-space miniature equipment layouts. Available in three standard industrial types: FR188 open type, FR188ZZ double metal shield type and FR188-2RS double rubber sealed type, it works steadily in dry, dusty, humid and mildly corrosive indoor and outdoor environments. Offered in carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, the FR188 covers full industrial demands for economical, sanitary, wear-resistant and anti-corrosion miniature precision applications.
FR188 Open / ZZ / 2RS Structural Features
FR188 Open Type: The unsealed open structure features unobstructed air flow and fast heat dissipation, preventing thermal accumulation and precision drop during prolonged high-speed micro operation. It allows easy grease refilling and tool-free regular maintenance without increasing rotational resistance. Suitable for clean, dry indoor environments and fully enclosed precision micro machinery, it maintains consistent running accuracy and long service life.
FR188ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the FR188ZZ effectively blocks fine dry dust, floating particles and micro industrial debris. The non-contact protective structure preserves original high-speed smoothness with low friction loss, ensuring stable high-precision operation. With reliable durability and superior cost performance, this version is widely adopted in dry industrial workshops and long-running miniature automation equipment.
FR188-2RS 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 avoid leakage, oxidation and aging, realizing long-term maintenance-free performance for humid, dusty and complex micro mechanical working scenarios.
FR188 Bearing Material Performance
Carbon Steel: High cost-effective industrial material with uniform hardness and stable anti-fatigue properties. Carbon steel FR188 bearings deliver reliable wear resistance and smooth high-speed rotation, ideal for mass production and budget-sensitive 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, sanitary accessories and compact medical precision devices.
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 marine micro instruments and miniature chemical equipment.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. 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 FR188 ultra-compact miniature flange bearing features a lightweight compact structure, stable load capacity, precise flange positioning, ultra-quiet operation and durable high-speed precision. Multiple sealing options and diversified material grades fully meet industrial requirements for cost efficiency, sanitation, wear resistance and corrosion protection. Widely applied in ultra-miniature high-speed motors, micro drone components, slim robotic micro joints, portable optical testing instruments, miniature transmission systems, tiny precision power tools and compact micro medical devices, the FR188 serves as an essential rotary and positioning component for space-limited micro mechanical structures. It delivers high-efficiency, low-noise and low-maintenance precision rotation solutions for modern miniaturized industrial, commercial and sanitary automation equipment.
