627 Deep Groove Ball Bearings
| 627 Deep Groove Ball Bearings | |||
|---|---|---|---|
| Part Number | 627 | Ball Number | 7 |
| d | 7 | Ball Size | 3.969 |
| D1 | 22 | Dynamic Load Co(N) | 3450 |
| B | 7 | Static Load Cor(N) | 1370 |
| R | 0.3 | Grease Speed | 31000 |
| Weight(Kg) | 0.013 | Oil Speed | 37000 |
627 Deep Groove Ball Bearing | Open, ZZ, 2RS High-Speed Mini Bearings
The 627 deep groove ball bearing is a high-precision miniature component in the 620 series, featuring upgraded rolling element design and refined raceway polishing for enhanced load capacity and operational stability. As an optimized single-row deep groove ball bearing, it retains a compact, lightweight structure while delivering low-friction, ultra-quiet and stable high-speed rotation, perfectly fitting various light-load micro transmission and precision motion systems. The 627 series supports three mainstream configurations: open type, 627ZZ double metal shield type and 627-2RS double rubber sealed type. With five industrial-grade material options, it fully meets economical, sanitary, wear-resistant and anti-corrosion demands for diverse miniature precision equipment.
627 Open / ZZ / 2RS Structural Features
627 Open Type: The unsealed open structure delivers unobstructed heat dissipation and smooth internal grease circulation without extra rotational resistance. It enables fast lubricant replacement and effortless daily maintenance. Suited for clean, dry indoor workshops and fully enclosed precision micro machinery, it maintains stable dimensional accuracy and consistent high-speed performance during long-cycle light-load continuous operation.
627ZZ Double Metal Shields: Equipped with dual-sided non-contact steel shields, this professional dust-proof bearing effectively blocks fine dry dust, tiny floating particles and micro workshop debris. The non-contact design preserves original ultra-high-speed stability and rotational precision without increasing friction loss. Boasting reliable durability and outstanding cost performance, it is widely applied in dry micro automation systems, small motors, precision electronics and general miniature transmission equipment.
627-2RS Double Rubber Seals: This fully sealed variant adopts double-sided contact rubber seals to achieve comprehensive isolation from moisture, oil mist, splash water and corrosive fine dust. It firmly locks internal lubricating grease to prevent leakage and aging, realizing long-term maintenance-free operation, ideal for humid, dusty and mild outdoor working environments for miniature precision devices.
627 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, offering excellent cost performance for mass civilian electronics and general industrial applications.
304 Stainless Steel: Universal food-grade stainless steel with superior anti-oxidation and rust resistance. It prevents surface corrosion and precision degradation in humid and open environments, suitable for food processing mini devices, light industry and daily precision miniature 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 high-humidity conditions, perfect 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 surface hardness. It features reliable wear and impact resistance, ensuring stable dimensional accuracy for long-cycle operating miniature precision parts.
440 Stainless Steel: Ultra-high hardness stainless steel with top-tier abrasion resistance and structural stability. It maintains precise and stable operation under slight wear and complex corrosive environments, customized for high-end electronic and industrial precision miniature equipment.
Core Advantages And Industrial Applications
The 627 deep groove ball bearing features ultra-compact size, lightweight structure, ultra-low noise and stable high-speed performance. Three diversified sealing structures and five professional material grades fully cover economical, anti-rust, wear-resistant and anti-corrosion miniature application scenarios. It is extensively utilized in micro motors, precision instruments, consumer electronics, intelligent toy transmission components, small household appliances, miniature medical devices, automated precision accessories and food processing micro equipment, providing durable, low-maintenance and high-efficiency precision rotation solutions for modern light-load miniature mechanical systems.
