692x
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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692x Bearing Product Overview & Core Advantages
The 692x is a miniature deep groove ball bearing designed for applications requiring compact dimensions and reliable performance in limited spaces. As a metric single row bearing with an open design, it excels in handling radial loads efficiently. Its small footprint, with a bore diameter of just 2.5 mm and an outside diameter of 7 mm, makes it ideal for high-precision instruments and compact mechanisms. Manufactured with chrome steel rings and balls combined with a stainless steel cage, it offers excellent durability and consistent operation, conforming to ABEC1 tolerance class for reliable performance in various industrial and electronic applications.
692x Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 69 | Series designation for extra-small, miniature deep groove ball bearings |
| 2x | Size code indicating specific bore diameter (2.5 mm) and cross-section |
| Open | No seals or shields, allowing for higher speeds and custom lubrication |
692x Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The raceway design enables smooth operation and effective radial load capacity, making it suitable for applications with primarily radial forces.
Precision Construction: Built to ABEC1 tolerance class with tight dimensional control (bore tolerance: -0.008mm to 0), ensuring consistent performance and easy installation in precision assemblies.
High-Speed Capability: The stainless steel cage and optimized internal geometry support a limiting speed of 63,000 rpm, ideal for high-speed miniature applications.
Standard Internal Clearance: With MC3 radial clearance (0.002mm to 0.013mm), the bearing accommodates thermal expansion and provides stable operation across the specified temperature range (-30° to 110°C).
Material Excellence: Chrome steel rings and balls provide high hardness and wear resistance, while the stainless steel cage offers corrosion resistance and reliable guidance for the 7 precision balls.
692x Bearing Typical Application Areas
- Small Precision Motors: Used in DC motors, stepper motors, and miniature fans
- Medical Devices: Ideal for surgical tools, dental handpieces, and diagnostic equipment
- Office Automation: Applied in printers, scanners, and copiers for precision paper handling mechanisms
- Electronic Equipment: Suitable for computer cooling fans, hard disk drives, and optical devices
- Instrumentation: Used in measuring instruments, gauges, and laboratory equipment requiring precise rotational movement
- Robotics: Employed in small robotic joints, actuators, and miniature automation systems
