W 617/5
W Series Stainless Steel Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
W 617/5
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0003 kg
Tolerance class
P0
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
5 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
8 mm
Outside diameter tolerance
-0.008mm to 0
Width
2 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
39 lbf
Radial static load rating
14 lbf
Limiting speed
85 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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In Stock
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W 617/5 Bearing Product Overview & Core Advantages
The W 617/5 is a metric single row deep groove ball bearing engineered for precision applications requiring compact dimensions and reliable performance. Constructed entirely from stainless steel, this bearing offers excellent corrosion resistance. Its primary function is to support radial loads efficiently. With its miniature size (5mm bore, 8mm OD, 2mm width) and P0 tolerance class, it is an ideal choice for high-precision, space-constrained assemblies demanding consistent operation and long service life.
W 617/5 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| W | Stainless Steel Bearing Series |
| 617 | Standard "6" series deep groove design, miniature size variant |
| /5 | Indicates a 5 mm bore diameter |
| (No Suffix) | Open (unsealed) construction, standard CN radial internal clearance, and no pre-lubrication (Lubrication: None) |
W 617/5 Bearing Structural Features & Performance Benefits
- All-Stainless-Steel Construction: The rings, balls, and cage are manufactured from stainless steel, providing superior resistance to rust and corrosion, making it suitable for harsh environments and clean applications.
- High-Speed Capability: The single-row deep groove raceway and stainless steel cage are optimized for smooth operation, supporting a limiting speed of 85,000 rpm.
- Precision Performance: Manufactured to P0 (ABEC 1) tolerance class with tight bore and outside diameter tolerances, ensuring high running accuracy and minimal vibration for sensitive mechanisms.
- Radial Load Capacity: The deep groove geometry is designed to handle radial dynamic loads up to 39 lbf and static loads up to 14 lbf effectively.
- Wide Temperature Range: Suitable for operation in temperatures from -30°C to 120°C.
W 617/5 Bearing Typical Application Areas
This miniature precision bearing is commonly specified in:
- Small Precision Motors and Stepper Motors
- Medical and Dental Hand Tools
- Optical Encoders and Scanning Devices
- Instrumentation and Control Systems
- Office Automation Equipment (e.g., small printers, scanners)
- RC Models and Drones
