F6903
F Series Flanged Bearings
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Part No.
Part No.
F6903
Basic Information
Bearing type
Ball
System of measurement
Metric
Ball bearing type
Flanged
Construction
Single Row
Tolerance class
ABEC-1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.008 mm to 0
Outside diameter
30 mm
Outside diameter tolerance
-0.011 mm to 0
Width
7 mm
Width tolerance
-0.12 mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
32 mm
Flange thickness
1.5 mm
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
11
Performance
Temperature range
-30° to 110°C
Radial dynamic load rating
1032 lbf
Radial static load rating
576 lbf
Limiting speed
22 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
C0
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Stainless Steel
Shield material
300 Series Stainless Steel
Environment & Compliance
ROHS
Compliant
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 2.84
/ each
In Stock
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F6903 Bearing Product Overview & Core Advantages
The F6903 is a metric single row ball bearing featuring an integral flange design for simplified mounting and precise axial location. Engineered for radial load applications, this open-type bearing offers a compact cross-section with a 7mm width, making it ideal for space-constrained assemblies. Manufactured to ABEC-1 precision tolerances with a C0 radial internal clearance, it provides reliable performance in a wide temperature range from -30° to 110°C. Its construction from chrome steel rings and stainless steel cage ensures durability and consistent operation.
F6903 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| F | Flanged outer ring for secure mounting and positioning |
| 69 | Series designation indicating a very thin, flanged cross-section |
| 03 | Bore diameter code (17 mm) |
| Open (Implied) | No seals or shields; requires external lubrication and protection from contaminants |
F6903 Bearing Structural Features & Performance Benefits
- Flanged Design: The integral flange (32mm OD, 1.5mm thick) enables easy installation and accurate axial positioning, eliminating the need for complex housing shoulders and reducing assembly time.
- High-Precision Components: Manufactured with chrome steel balls and rings, combined with a stainless steel cage, ensures smooth operation, low noise, and extended service life under radial dynamic loads up to 1032 lbf.
- Optimized Internal Geometry: With 11 precision balls of 3.969mm diameter, the bearing achieves an excellent balance between load capacity and limiting speed (22,000 rpm), suitable for various rotary applications.
- Standard Internal Clearance (C0): Provides reliable performance with a radial internal clearance of 0.002mm to 0.013mm, accommodating typical operating temperatures and fits without excessive preload.
F6903 Bearing Typical Application Areas
- Small Precision Motors: Ideal for spindle support in miniature DC motors and stepper motors.
- Office Automation Equipment: Commonly used in printers, scanners, and copiers for paper feed and roller mechanisms.
- Medical Devices: Suitable for low-torque, high-speed components in diagnostic equipment and small pumps.
- Instrumentation and Control Systems: Provides precise rotational support in encoders, sensors, and small gearboxes.
