R30 Deep groove ball bearing
| R30 Deep groove ball bearing | |||
|---|---|---|---|
| Part Number | R30 | Ball Number | 8 |
| d | 12.7 | Ball Size | 4.762 |
| D1 | 28.575 | Dynamic Load Co(N) | 1890 |
| B | 7.938 | Static Load Cor(N) | 925 |
| R | 0.4 | Grease Speed | 36000 |
| Weight(Kg) | 0.0038 | Oil Speed | 43000 |
R30 Miniature Deep Groove Ball Bearing | Open, ZZ, 2RS High Precision Bearings
The R30 deep groove ball bearing is a high-precision imperial miniature bearing engineered for compact, space-restricted micro mechanical systems requiring consistent high-speed stability, low noise and extended service life. Manufactured with standard imperial dimensions, mirror-polished raceways and precision rolling elements, this single-row micro bearing delivers ultra-low friction, minimal vibration and reliable dimensional accuracy. Optimized for light-load, high-frequency cyclic operation, the R30 features upgraded structural rigidity and excellent fatigue resistance, supporting long-duration continuous operation for miniaturized electromechanical and precision automation equipment. Offered in three industrial configurations, including open type, R30ZZ double metal shield type and R30-2RS double rubber sealed type, this imperial bearing is available in five industrial-grade materials to suit economical, sanitary, high-wear and corrosive working conditions for diverse micro-precision applications.
R30 Open / ZZ / 2RS Structural Features
R30 Open Type: The unsealed open design enables unobstructed airflow and efficient heat dissipation, effectively preventing thermal fatigue during prolonged high-speed operation. It allows easy grease replenishment and hassle-free routine maintenance without increasing rotational resistance. Ideal for clean, dry indoor workshops and fully enclosed precision micro machinery, it maintains superior running accuracy and stable long-cycle performance for lightweight micro mechanical assemblies.
R30ZZ Double Metal Shields: Fitted with dual non-contact steel shields, the R30ZZ miniature bearing effectively blocks dry fine dust, floating micro particles and tiny industrial debris. The non-contact protective structure preserves original high-speed smoothness and micro precision with negligible friction loss. With reliable durability and excellent cost performance, it is widely used in dry working environments for micro high-speed motors, drone precision components, optical instruments and miniature transmission systems.
R30-2RS Double Rubber Seals: The fully sealed R30-2RS version adopts double-sided contact rubber seals to fully isolate moisture, water splashes, oil mist and corrosive fine dust. It tightly locks internal lubricant to prevent leakage, oxidation and aging, achieving long-term maintenance-free operation. This adaptable sealed bearing performs steadily in humid, dusty and mildly harsh environments for portable micro precision devices and outdoor miniature electromechanical equipment.
R30 Bearing Material Performance
Carbon Steel: Cost-effective industrial base material with uniform hardness and stable anti-fatigue properties. It provides reliable wear resistance and smooth high-speed rotation for standard micro precision machinery, ideal for mass production and budget-friendly miniature equipment projects.
304 Stainless Steel: Food-grade stainless steel with outstanding rust and oxidation resistance. It resists micro corrosion in humid and open environments, perfect for food processing parts and sanitary-grade micro precision devices.
316 Stainless Steel: Marine-grade anti-corrosion material with strong resistance to acid, alkali and salt spray. It withstands coastal humidity and mild chemical exposure, suitable for marine micro instruments and light chemical miniature machinery.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high surface hardness. It retains stable wear resistance and precise dimensional stability during continuous high-speed cyclic operation.
440 Stainless Steel: Ultra-high hardness stainless steel with premium abrasion resistance and structural stability. It delivers accurate and stable micro rotation under severe wear and corrosive conditions, tailored for high-end micro precision mechanical systems.
Core Advantages And Industrial Applications
The R30 imperial miniature bearing features a compact lightweight structure, ultra-quiet operation and long-lasting high-speed precision. Three universal sealing grades and five diversified material options fully cover industrial requirements for cost efficiency, rust resistance, wear resistance and anti-corrosion performance. It is widely deployed in miniature high-speed motors, drone core components, optical precision instruments, micro transmission assemblies, portable micro power tools and compact medical devices. As an essential imperial miniature rotary component for space-limited micro systems, the R30 bearing delivers high-efficiency, low-maintenance and ultra-precise rotation solutions for modern miniaturized industrial and commercial precision equipment.
