618/7/W64
618 & 619 Series Thin Section Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
618/7/W64
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0007 kg
Tolerance class
ABEC 1 | ISO P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
9 mm
Outside diameter tolerance
-0.007mm to 0
Width
2.5 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30°to 120 °C
Radial dynamic load rating
95 lbf
Radial static load rating
26 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Soild Oil
Radial internal clearance
CN
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Chrome Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 12.23
/ each
In Stock
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618/7/W64 Bearing Product Overview & Core Advantages
The 618/7/W64 is a single row deep groove ball bearing designed for compact, high-precision applications requiring reliable performance. This metric bearing excels in handling radial loads and is characterized by its minimal cross-section and lightweight design. Manufactured to ABEC 1 | ISO P0 tolerance standards, it offers consistent operation and is pre-lubricated with Soild Oil for long-term, maintenance-free service. Its open design facilitates high-speed operation, making it an ideal choice for applications where space is limited and reliability is critical.
618/7/W64 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 618 | Series designation for extra small, thin-section deep groove ball bearings. |
| 7 | Indicates a bore diameter of 4 mm. |
| W64 | Specifies the Soild Oil lubrication, providing a sealed-for-life, maintenance-free solution with excellent temperature stability. |
618/7/W64 Bearing Structural Features & Performance Benefits
- Compact and Lightweight Design: With an outside diameter of just 9 mm and a width of 2.5 mm, this bearing is engineered for applications with severe space constraints. Its low weight of 0.0007 kg minimizes rotational inertia.
- High-Speed Capability: The open seal type and optimized internal geometry, combined with Soild Oil lubrication, enable a high limiting speed of 85,000 rpm.
- Robust Load Capacity: Manufactured entirely from Chrome Steel (rings, balls, and cage), it provides a radial dynamic load rating of 95 lbf and a radial static load rating of 26 lbf, ensuring durability under demanding conditions.
- Maintenance-Free Operation: The integrated Soild Oil lubrication eliminates the need for re-lubrication, offering consistent performance across a wide temperature range of -30°C to 120°C.
- Standardized Precision: Built to ABEC 1 (ISO P0) tolerance class with a standard CN radial internal clearance, it guarantees smooth and quiet running for general precision applications.
618/7/W64 Bearing Typical Application Areas
This miniature deep groove ball bearing is ideally suited for:
- Small Precision Motors: Used in DC motors, stepper motors, and spindle motors for consumer electronics, drones, and medical devices.
- Instrumentation and Control Systems: Critical for encoders, sensors, gauges, and other precision measurement equipment.
- Office Automation Equipment: Found in printers, scanners, and small cooling fans.
- Robotics and Automation: Applied in miniature joints, guides, and drives of small-scale robotic arms and automated systems.
