R2 Deep Groove Ball Bearings
| R2 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | R2 | Ball Number | 7 |
| d | 3.175 | Ball Size | 1.588 |
| D1 | 9.525 | Dynamic Load Co(N) | 630 |
| B | 3.97 | Static Load Cor(N) | 218 |
| R | 3.97 | Grease Speed | 56000 |
| Weight(Kg) | 0.002 | Oil Speed | 67000 |
R2 Bearing | Open / ZZ / RS Seals | Inch-Series Mini Bearing with Premium Corrosion-Resistant Materials
R2 bearing is a standard inch-series miniature deep groove ball bearing, featuring compact imperial sizing and ultra-precise rotary performance. Engineered for micro-space installation and low-load precision motion systems, it delivers steady rotation, minimal mechanical loss and outstanding structural stability. Available in Open, ZZ and RS sealing options plus five industrial-grade materials, this versatile inch bearing suits diverse precision, dry, humid and corrosive operational environments.
R2 Bearing Three Seal Type Performance
R2 Open Bearing: Adopts unsealed open construction with full ventilation design, realizing excellent heat dissipation and zero rotating resistance. It supports flexible grease replenishment and routine inspection, ideal for continuous high-precision, high-speed running. Perfect for clean indoor precision equipment, instrument transmission systems and micro mechanical motion modules.
R2ZZ Bearing (Double Metal Shields): Equipped with dual non-contact metal shields to block fine dry dust, floating particles and workshop debris effectively. The friction-free shielding structure preserves original running accuracy and delivers reliable heat stability, making it ideal for dry industrial scenarios, micro drive motors, measuring instruments and smart electronic core components.
R2RS Bearing (Double Rubber Seals): Features dual lip rubber contact seals with enhanced tight barrier capability. It effectively resists moisture intrusion, dust accumulation and light pollutant contamination, enabling long-term maintenance-free operation. Well-suited for fluctuating ambient conditions including humid workshop equipment, outdoor precision gadgets and automated micro transmission units.
R2 Bearing Material Features And Practical Applications
Bearing Steel: Standard chrome bearing steel with high rigidity, superior wear resistance and stable dynamic load capacity. Offering reliable durability and budget-friendly cost, it is the mainstream choice for general micro machinery, ordinary motor parts and conventional precision transmission equipment.
304 Stainless Steel: Provides excellent atmospheric oxidation resistance and daily anti-rust performance. It maintains stable mechanical properties under normal humid conditions, perfect for consumer electronics, light industrial fittings and general low-load indoor and outdoor micro devices.
420 Stainless Steel: Balances high hardness and mechanical toughness with mild chemical corrosion resistance. It retains consistent precision rotation under cyclic light-load operation, widely used in optical instruments, miniature medical devices and high-end precision smart machinery.
440 Stainless Steel: Features extreme hardness and exceptional abrasion resistance, with strong tolerance to medium corrosive working conditions. It ensures long-term stable service for precision automation parts, micro hydraulic accessories and high-stability industrial transmission systems.
316 Stainless Steel: Boasts premium salt spray, acid and alkali corrosion resistance, adapting to severe harsh environments. It is specially applied in marine micro fittings, food sanitation machinery, chemical test instruments and sterile medical precision equipment.
Core Advantages: R2 inch miniature bearing supports multi-seal and multi-material customization, featuring high precision, low mechanical loss and strong environmental adaptability. It widely serves precision instruments, electronic equipment, automation, medical, food and marine industries to meet diverse micro-precision motion demands.
