618/8-2Z
618 & 619 Series Thin Section Bearings
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618/8-2Z Bearing Product Overview & Core Advantages
The 618/8-2Z is a metric single row deep groove ball bearing designed for exceptional performance in compact spaces. This shielded bearing excels in applications requiring reliable operation under radial loads. Its key advantages include a compact cross-section, high limiting speed, and consistent operation within a wide temperature range. Manufactured to ABEC 1 | ISO P0 tolerance standards, it provides a cost-effective solution for high-reliability applications demanding precision and durability.
618/8-2Z Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 618 | Deep Groove Ball Bearing Series (Extra Thin Section) | Ultra-compact design for space-constrained applications. |
| 8 | Bore Diameter: 8 mm | Standard metric bore size for common shaft diameters. |
| -2Z | Shielded on Both Sides | Provides effective protection against contaminant ingress, enhancing bearing service life. |
618/8-2Z Bearing Structural Features & Performance Benefits
Optimized for Radial Loads: The single row deep groove raceway geometry is precision-engineered to carry significant radial dynamic load ratings (184 lbf), making it ideal for supporting rotating shafts.
High-Speed Capability: The combination of a chrome steel cage and optimized internal geometry enables a high limiting speed of 56,000 rpm, suitable for demanding high-RPM applications.
Contaminant Protection: The non-contact 2Z shields retain the factory-applied grease and protect the internal components from dust and other particulates, reducing maintenance needs.
Precision & Consistency: Manufactured from high-grade chrome steel for both rings and balls, and held to ABEC 1 precision tolerances, this bearing ensures smooth, low-vibration, and reliable performance.
618/8-2Z Bearing Typical Application Areas
- Small Electric Motors: Ideal for spindle support in miniature DC motors, fans, and blowers.
- Precision Instruments: Used in optical encoders, medical devices, and laboratory equipment requiring smooth, precise rotation.
- Office Automation Equipment: Found in printers, scanners, and copiers for paper feed rollers and drum support.
- Robotics & Automation: Suitable for joint and actuator applications in small-scale robotic arms and linear guides.
