619/4
618 & 619 Series Thin Section Bearings
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Part No.
Part No.
619/4
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0015 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.007mm to 0
Width
4 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
140 lbf
Radial static load rating
40 lbf
Limiting speed
80 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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In Stock
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619/4 Bearing Product Overview & Core Advantages
The 619/4 is a metric miniature deep groove ball bearing designed for high-precision applications requiring compact dimensions and reliable performance. As a single row bearing with an open design, it excels in handling radial loads efficiently. Manufactured to a P6 tolerance class, it offers superior running accuracy, making it ideal for applications demanding precise rotational motion and high rotational speeds.
619/4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Interpretation | Technical Significance |
|---|---|---|
| 619 | Series Designation | Indicates a deep groove ball bearing series with a particularly thin cross-section. |
| /4 | Bore Diameter | Specifies a 4 mm bore diameter. |
| (Implied) | Open, P6, CN Clearance | Standard configuration includes open seal type for versatile lubrication options, P6 tolerance class for high precision, and CN radial internal clearance (normal). |
619/4 Bearing Structural Features & Performance Benefits
- High-Precision Design: The P6 tolerance class ensures minimal runout and vibration, providing exceptional rotational accuracy for sensitive equipment.
- Optimized for High Speeds: The combination of a stainless steel cage, open design, and precision-ground chrome steel components allows for a high limiting speed of 80,000 rpm.
- Robust Load Capacity: Engineered to handle significant radial dynamic loads (140 lbf) and radial static loads (40 lbf) within its compact bearing dimensions (11 mm OD, 4 mm width).
- Material Integrity: Rings and balls made from high-grade chrome steel offer excellent wear resistance and durability, while the stainless steel cage provides corrosion resistance and stability at high speeds.
- Versatile Lubrication: The open seal type allows for the application of specialized lubricants tailored to specific operational needs, including high-temperature environments up to 120°C.
619/4 Bearing Typical Application Areas
This miniature precision bearing is ideally suited for applications where space is limited and performance is critical:
- Small Precision Motors and Stepper Motors
- Medical and Dental Handpieces
- High-Speed Spindles in PCB drilling and engraving machines
- Office Automation Equipment (e.g., scanners, printers)
- Instrumentation and Optical Encoders
- Robotics and Small Gearboxes
