619/8
618 & 619 Series Thin Section Bearings
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Performance
Materials
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619/8 Bearing Product Overview & Core Advantages
The 619/8 is a single row deep groove ball bearing designed for precision applications requiring high reliability and compact design. This metric bearing excels in handling radial loads efficiently. Its open design and P6 tolerance class ensure high running accuracy, making it an ideal choice for high-speed mechanisms and precision instruments where space is at a premium and performance is critical.
619/8 Bearing Model Code Explained, Specifications & Naming Convention
The model number 619/8 can be broken down as follows:
- 619: Series designation for extra small, thin-section deep groove ball bearings.
- /8: Indicates a bore diameter of 8 mm.
Key specifications derived from the model and its standard configuration:
- Seal Type: Open (No seal or shield, allowing for higher speeds and easier re-lubrication if required).
- Tolerance Class: P6 (High precision grade for superior running accuracy).
- Internal Clearance: CN (Standard, normal radial internal clearance).
- Lubrication: None (Supplied without grease, allowing for application-specific lubrication).
619/8 Bearing Structural Features & Performance Benefits
The 619/8 bearing's performance is defined by its high-quality construction and precision engineering:
- High Precision & Speed: Manufactured to a P6 tolerance class, this bearing guarantees exceptional running accuracy and smooth operation. The open design and standard CN clearance contribute to its high limiting speed of 53,000 rpm, making it a true high-speed bearing.
- Robust Load Capacity: With a dynamic load rating of 328 lbf and a static load rating of 105 lbf, it provides reliable performance under significant radial loads.
- Durable Materials: The combination of chrome steel rings and balls with a stainless steel cage ensures high durability, corrosion resistance, and stable performance across its specified temperature range of -30°C to 120°C.
- Compact and Lightweight: With compact bearing dimensions (8mm bore, 19mm OD, 6mm width) and a weight of just 0.0071 kg, it is perfect for applications where minimizing size and weight is essential.
619/8 Bearing Typical Application Areas
The 619/8 deep groove ball bearing is suited for a wide range of precision applications, including:
- Small Electric Motors and Spindles
- Precision Instruments and Optical Devices
- Office Automation Equipment (e.g., Printers, Scanners)
- Medical and Dental Handpieces
- Robotics and Miniature Gearboxes
