W 617/7 R
W Series Stainless Steel Flanged Miniature Bearings
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Part No.
Part No.
W 617/7 R
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0007 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
11 mm
Outside diameter tolerance
-0.008mm to 0
Width
2.5 mm
Width tolerance
-0.12mm to 0
Outer Ring Dimensions
Flange outer diameter
12.2 mm
Flange thickness
0.6 mm
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
58 lbf
Radial static load rating
23 lbf
Limiting speed
70 X 1000 rpm
Lubrication
None
Radial internal clearance
CN
Materials
Ring material
Stainless Steel
Ball material
Stainless Steel
Cage material
Stainless Steel
Environment & Compliance
REACH
Compliant
ROHS
Compliant
Technical Drawings
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W 617/7 R Bearing Product Overview & Core Advantages
The W 617/7 R is a miniature deep groove ball bearing engineered for applications demanding compact design and reliable performance. As a single row, open-type bearing, it excels in handling primarily radial loads. Manufactured entirely from stainless steel, it offers excellent corrosion resistance, making it suitable for various industrial environments. Its small bore diameter of 7mm and minimal cross-section are ideal for space-constrained assemblies requiring high precision and durability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Deep Groove Ball Bearing |
| 617/7 | Bearing series and size designation (7mm bore) |
| R | Flanged outer ring design |
W 617/7 R Bearing Structural Features & Performance Benefits
- Flanged Design: The integrated flange (OD: 12.2mm) simplifies bearing mounting and positioning, enhancing assembly accuracy and stability in housings.
- All-Stainless Construction: Rings, balls, and cage are made of stainless steel, providing superior corrosion resistance and suitability for washdown environments or applications exposed to moisture.
- High-Speed Capability: With a limiting speed of 70,000 rpm, it is designed for high-speed applications.
- Precision Tolerance: Manufactured to P0 tolerance class and standard CN radial internal clearance, ensuring consistent performance and smooth operation.
- Open Seal: The open seal type allows for easy re-lubrication if required, though it is supplied without lubrication (None).
W 617/7 R Bearing Typical Application Areas
This miniature flanged bearing is commonly used in:
- Small precision motors and miniature gearboxes
- Medical devices and dental handpieces
- Optical encoders and instrumentation
- Office automation equipment (e.g., printers, scanners)
- Robotics and small mechanism pivots
