F634
F Series Flanged Miniature Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
F634
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
5.66 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
4 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
16 mm
Outside diameter tolerance
-0.008mm to 0
Width
5 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Outer Ring Dimensions
Flange outer diameter
18 mm
Flange thickness
1 mm
Ball & Washer Dimensions
Ball diameter
2.381 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
256 lbf
Radial static load rating
94 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Required
Radial internal clearance
0.002mm to 0.013mm
Radial internal clearance
MC3
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:
$ 1.32
/ each
In Stock
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F634 Bearing Product Overview & Core Advantages
The F634 is a metric single row deep groove ball bearing engineered for high performance in compact spaces. Designed primarily for radial load applications, this bearing offers reliable operation and is built to ABEC1 precision class tolerances. Its compact dimensions (4mm bore, 16mm OD, 5mm width) make it ideal for applications where space is at a premium, while its chrome steel construction ensures durability and a long service life. The open design requires lubrication, providing flexibility for specific application needs.
F634 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| F634 | Basic bearing model number. |
| Open (Seal Type) | No integral seals or shields. Allows for higher limiting speeds and custom lubrication schemes. |
| ABEC1 | Specifies the precision tolerance class for dimensional accuracy and running performance. |
| MC3 | Denotes the standard radial internal clearance group (0.002mm to 0.013mm). |
F634 Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry: The deep groove raceway and 7 high-precision chrome steel balls provide excellent radial load capacity (256 lbf dynamic, 94 lbf static).
- High-Speed Capability: The stainless steel cage and open design contribute to a high limiting speed of 36,000 rpm, making it suitable for demanding high-speed applications.
- Precision & Rigidity: Manufactured to ABEC1 standards with tight bore and outside diameter tolerances, ensuring consistent performance, reduced vibration, and precise shaft positioning.
- Material Integrity: Components made from chrome steel offer high hardness and resistance to wear, supporting a wide operating temperature range from -30°C to 110°C.
F634 Bearing Typical Application Areas
This bearing is commonly specified in:
- Small Precision Motors and Spindles
- Medical and Dental Handpieces
- Office Automation Equipment (e.g., printers, scanners)
- Instrumentation and Precision Gearboxes
- Robotics and small-scale automation joints
