625 Deep Groove Ball Bearings
| 625 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 625 | Ball Number | 7 |
| d | 5 | Ball Size | 2.778 |
| D1 | 16 | Dynamic Load Co(N) | 1880 |
| B | 5 | Static Load Cor(N) | 695 |
| R | 0.3 | Grease Speed | 38000 |
| Weight(Kg) | 0.0052 | Oil Speed | 48000 |
625 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Mini Bearings
The 625 deep groove ball bearing is a compact miniature precision component in the 620 series, widely adopted for light-load high-speed precision rotation scenarios. Featuring optimized micro rolling elements and precise raceway finishing, this single-row ball bearing delivers low-friction, ultra-quiet and stable high-speed operation with compact size and lightweight structure. It perfectly adapts to micro mechanical transmission and mini motion systems. The 625 series supports three mainstream configurations: open type, 625ZZ double metal shield type and 625-2RS double rubber sealed type. With five industrial-grade material options, it meets economical, sanitary, wear-resistant and anti-corrosion requirements for miniature precision equipment.
625 Open / ZZ / 2RS Structural Features
625 Open Type: The unsealed open structure offers unobstructed heat dissipation and smooth grease circulation, ensuring zero extra rotational resistance during high-speed operation. It allows quick lubricant replacement and easy routine maintenance. Ideal for clean, dry indoor and fully enclosed mini precision machinery, it maintains consistent dimensional accuracy and stable high-speed performance for long-cycle light-load operation.
625ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this dust-proof miniature bearing effectively blocks fine dry dust and tiny floating particles. The non-contact design retains original ultra-high-speed stability without increasing friction loss. With reliable durability and superior cost performance, it is widely used in dry indoor micro automation, small motors and precision electronic equipment.
625-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals for comprehensive isolation from moisture, fine dust and oil mist. It locks internal lubricating grease firmly to prevent leakage and deterioration, realizing long-term maintenance-free operation. It is the optimal choice for humid, dusty and light outdoor working environments for miniature precision devices.
625 Bearing Material Performance
Carbon Steel: Standard cost-effective industrial material with uniform hardness and excellent anti-fatigue properties. It provides stable wear resistance and smooth high-speed rotation for conventional light-load miniature equipment, achieving outstanding cost performance for mass civilian and electronic product applications.
304 Stainless Steel: Universal food-grade stainless steel with excellent anti-oxidation and rust resistance. It avoids surface corrosion and precision attenuation in humid environments, suitable for food-grade mini devices, light industry and daily precision machinery.
316 Stainless Steel: Premium marine-grade corrosion-resistant material with excellent acid, alkali and salt spray tolerance. It withstands mild chemical erosion and coastal humid conditions, ideal for sanitary miniature equipment, marine micro devices and light chemical precision instruments.
420 Stainless Steel: High-toughness martensitic stainless steel balancing moderate corrosion resistance and high hardness. It features excellent wear and impact resistance, ensuring stable dimensional accuracy for long-cycle running miniature precision parts.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance. It maintains precise and stable operation under slight wear and corrosive environments, customized for high-end electronic and precision miniature industrial equipment.
Core Advantages And Industrial Applications
The 625 deep groove ball bearing features ultra-compact size, lightweight, ultra-low noise and stable high-speed performance. Three diversified sealing structures and five material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion miniature application scenarios. It is extensively applied in micro motors, precision instruments, electronic equipment, toy transmission parts, small household appliances, medical miniature devices, precision automation accessories and food processing mini equipment, providing stable, low-maintenance and high-precision rotation solutions for modern light-load miniature mechanical systems.
