S692x
600 Series Stainless Steel Miniature Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Ball & Washer Dimensions
Performance
Materials
Environment & Compliance
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S692x Bearing Product Overview & Core Advantages
The S692x is a miniature deep groove ball bearing designed for applications demanding high precision and reliability in compact spaces. As a single row, open bearing, it is optimized for radial loads. Manufactured entirely from stainless steel, it offers excellent corrosion resistance. Its key advantages include a very small bore diameter of 2.5 mm, a lightweight design at just 0.4 g, and suitability for high-speed operation up to 56,700 rpm, making it ideal for precision instruments and miniature electromechanical devices.
S692x Bearing Model Code Explained, Specifications & Naming Convention
The S692x model designation follows a standard industry format for miniature bearings. Here is a breakdown of its key characteristics:
- S: Typically denotes a bearing with a stainless steel construction.
- 69: Indicates a very small, ultra-thin series with a 2.5 mm bore.
- 2x: Specifies the bearing series and its dimensional standards (2.5mm x 7mm x 2.5mm).
Key specifications derived from the model and data:
- Seal Type: Open - Allows for custom lubrication schemes but requires a clean operating environment.
- Tolerance Class: ABEC 1 - Defines standard precision for runout and dimensional accuracy.
- Internal Clearance: MC3 - Specifies a greater than normal radial internal clearance (0.002mm to 0.013mm).
S692x Bearing Structural Features & Performance Benefits
The S692x's performance is a direct result of its specific design and material selection:
- Compact & Lightweight Design: With dimensions of 2.5mm (Bore) x 7mm (OD) x 2.5mm (Width) and a weight of only 0.4g, it is engineered for space-constrained and weight-sensitive applications.
- High-Speed Capability: The combination of a stainless steel cage, seven precision balls, and an open design facilitates a very high limiting speed of 56,700 rpm, suitable for demanding miniature motors and spindles.
- Corrosion Resistance: All components, including rings, balls, and cage, are made from stainless steel, ensuring long-term performance in humid or mildly corrosive environments.
- Radial Load Capacity: Engineered to handle radial dynamic loads up to 66 lbf and radial static loads up to 21 lbf, providing reliable support in miniature assemblies.
S692x Bearing Typical Application Areas
The S692x miniature bearing is critical in a wide range of high-precision, small-scale applications, including:
- Precision Instruments (e.g., optical encoders, gauges)
- Small DC Motors and Gear Motors
- Medical Devices and Dental Handpieces
- Robotics and Miniature Actuators
- Office Automation Equipment (e.g., small printers, scanners)
- Small Fans and Impellers
