618/5
618 & 619 Series Thin Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
618/5
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0012 kg
Tolerance class
P6
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.007mm to 0
Width
3 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
105 lbf
Radial static load rating
32 lbf
Limiting speed
75 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
No drawings available at the moment, will be launched soon
Price:
$ 3.4
/ each
In Stock
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618/5 Bearing Product Overview & Core Advantages
The 618/5 is a miniature deep groove ball bearing designed for applications requiring high precision and compact design. As a single row bearing with an open construction, it excels at handling primarily radial loads. Its compact dimensions (5mm bore, 11mm OD, 3mm width) make it ideal for space-constrained assemblies. Manufactured to a P6 tolerance class, this bearing ensures high running accuracy and is suitable for high-reliability applications demanding consistent performance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 618 | Series designation for extra small, deep groove ball bearings. |
| /5 | Indicates a bore diameter of 5 mm. |
| (No suffix) | The absence of a seal suffix confirms an open (non-contact) design, allowing for higher limiting speeds. |
618/5 Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Built to a P6 tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, this bearing provides excellent running accuracy and high rigidity for precise rotational motion.
- Radial Load Capacity: The optimized deep groove raceway and chrome steel construction enable efficient handling of radial dynamic loads up to 105 lbf.
- High-Speed Capability: The open design and lightweight stainless steel cage contribute to a high limiting speed of 75,000 rpm, making it suitable for high-speed applications.
- Corrosion Resistance & Durability: The stainless steel cage offers good corrosion resistance, enhancing the bearing's longevity in various environments.
- Versatile Lubrication: The open seal type allows for easy application of various lubricants tailored to specific operational needs, including high-temperature or specialized greases.
618/5 Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Medical Devices: Used in surgical handpieces, dental tools, and small diagnostic equipment.
- Office Automation: Critical components in printers, scanners, and small fans.
- Instrumentation: Suitable for encoders, gauges, and other precision measuring instruments.
- Robotics: Applied in small joints and actuators of robotic arms and drones.
