MF74 Flange Ball Bearings
| MF74 Flange Ball Bearings | |||
|---|---|---|---|
| Part Number | MF74 | Ball Number | 7 |
| d | 4 | Ball Size | 1.2 |
| R | 0.15 | Dynamic Load Co(N) | 320 |
| D/D1 | 7/8.2 | Static Load Cor(N) | 130 |
| B/C | 2/0.6 | Grease Speed | 60000 |
| Weight(Kg) | 0.00038 | Oil Speed | 71000 |
MF74 Flange Miniature Bearing | Open, ZZ, 2RS High Precision Bearing
The MF74 flange miniature bearing is a high-precision integrated flanged deep groove ball bearing developed for ultra-compact micro mechanical structures and low-to-medium load high-speed rotary automation systems. Adopting a one-piece flange positioning design and finely polished raceways, this bearing delivers outstanding dimensional stability, ultra-low noise, vibration-free operation and long-term rotational accuracy. The integrated flange simplifies mounting, enables precise axial positioning, and effectively avoids shaft offset and mechanical looseness during continuous cyclic operation. Available in three mainstream industrial types including MF74 open type, MF74ZZ double metal shield type and MF74-2RS double rubber sealed type, it adapts perfectly to dry, dusty, humid and mildly harsh indoor and outdoor working environments. Manufactured in five industrial-grade materials: carbon steel, 304 stainless steel, 316 stainless steel, 420 stainless steel and 440 stainless steel, the MF74 covers economical, sanitary, high-wear and anti-corrosion precision machinery application requirements.
MF74 Open / ZZ / 2RS Structural Features
MF74 Open Type: The unsealed open structure provides unobstructed air circulation and excellent heat dissipation, preventing thermal accumulation and precision loss during long-hour high-speed operation. It allows easy grease replenishment and tool-free routine maintenance without increasing rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed micro precision equipment, it maintains stable accuracy and consistent long-cycle performance.
MF74ZZ Double Metal Shields: Equipped with dual non-contact steel shields, the MF74ZZ effectively blocks fine dust, dry particles and floating industrial debris. The non-contact protective structure retains original high-speed smoothness and micro precision with minimal friction loss. Featuring stable durability and high cost performance, this model is widely used for dry working conditions and long-running micro high-speed precision machinery.
MF74-2RS Double Rubber Seals: The fully sealed 2RS structure adopts double-sided contact rubber seals to comprehensively isolate moisture, splash water, oil mist and corrosive fine dust. It locks internal lubricant firmly to prevent leakage, oxidation and aging, achieving long-term maintenance-free operation. This versatile bearing runs reliably in humid, dusty and complex industrial scenarios.
MF74 Bearing Material Performance
Carbon Steel: Cost-effective industrial base material with uniform hardness and stable anti-fatigue performance. Carbon steel MF74 bearings offer reliable wear resistance and smooth high-speed rotation, ideal for mass-produced automation equipment and budget-sensitive precision projects.
304 Stainless Steel: Food-grade rust-resistant stainless steel with excellent oxidation resistance. It prevents micro corrosion in humid and open environments, suitable for medical devices, food processing parts and sanitary-grade precision mechanical systems.
316 Stainless Steel: Marine-grade anti-corrosion material resistant to salt spray, acid and alkali erosion. It maintains stable 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 hardness and corrosion resistance. It provides stable wear resistance and dimensional stability during frequent high-speed cyclic operation.
440 Stainless Steel: Ultra-high hardness stainless steel with superior abrasion resistance. It withstands heavy friction and weak corrosion, delivering long-term stable and accurate rotation for high-end micro precision systems.
Core Advantages And Industrial Applications
The MF74 flange miniature bearing features an ultra-compact lightweight structure, integrated flange positioning, ultra-quiet operation and durable high-speed precision. Multiple sealing grades and material options fully meet industrial demands for cost efficiency, sanitation, wear resistance and corrosion protection. Widely adopted in miniature high-speed motors, drone precision assemblies, optical instruments, micro transmission systems, portable precision power tools and compact medical automation equipment, the MF74 acts as a core rotary and positioning component for space-limited micro mechanical systems. It provides stable, low-noise and low-maintenance precision rotation solutions for modern miniaturized industrial and commercial precision automation devices.
