698zz
600 Series Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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698zz Bearing Product Overview & Core Advantages
The 698zz is a miniature deep groove ball bearing engineered for high performance in compact spaces. As a single row, shielded metric bearing, it is designed to primarily handle radial loads efficiently. Its key advantages include a compact design with a 6mm width, reliable operation at limiting speeds up to 36,000 rpm, and a robust construction using chrome steel rings and balls with a stainless steel cage. This combination makes it an ideal choice for applications demanding high precision, smooth operation, and long service life in a minimal footprint.
698zz Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| zz | Indicates the bearing is equipped with shields on both sides. These non-contact shields, made from 300 Series Stainless Steel, protect the bearing interior from large contaminants while minimizing friction, making it suitable for high-speed applications. |
Note: The "698" prefix denotes the bearing series and size (8mm bore, 19mm OD, 6mm width). The absence of other suffixes signifies standard features, including an ABEC1 tolerance class and the requirement for external lubrication.
698zz Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry: The deep groove raceway and 7 high-precision chrome steel balls ensure smooth rotation and efficient radial load distribution.
- High-Speed Capability: The lightweight, durable stainless steel cage accurately guides the balls, reducing friction and enabling stable operation at the limiting speed of 36,000 rpm.
- Enhanced Contamination Protection: The double-shielded (zz) design offers superior protection against dust and debris compared to open bearings, extending service life in challenging environments.
- Precision & Reliability: Manufactured to ABEC1 tolerance class with a controlled radial internal clearance (MC3: 0.002mm to 0.013mm), this bearing provides consistent performance and running accuracy for demanding applications.
698zz Bearing Typical Application Areas
The 698zz miniature bearing is widely used in applications requiring compact size, high speed, and reliable performance. Key industries and equipment include:
- Small Precision Motors: (e.g., stepper motors, coreless motors)
- Office Automation Equipment: (e.g., printers, scanners, copiers)
- Medical Devices and Instrumentation: (e.g., handheld surgical tools, dental handpieces)
- Computer Peripherals: (e.g., cooling fans, HDD spindles)
- Radio-Controlled Models and Drones: (e.g., motor and gearbox bearings)
- High-Speed Spindles in small machinery and tools.
