639
600 Series Miniature Bearings
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Part No.
Part No.
639
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
36.2 g
Tolerance class
ABEC1
Seal type
Open
For load direction
Radial
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
30 mm
Outside diameter tolerance
-0.008mm to 0
Width
10 mm
Width tolerance
-0.12mm to 0
Inner Ring Dimensions
Inner ring type
Standard
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
7
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
891 lbf
Radial static load rating
374 lbf
Limiting speed
24 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:
$ 1.13
/ each
In Stock
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639 Bearing Product Overview & Core Advantages
The 639 bearing is a metric single row deep groove ball bearing designed for reliable performance in general industrial applications. Engineered with chrome steel rings and balls for durability, it excels at handling primarily radial loads. Its open design allows for versatile lubrication options, while the ABEC1 tolerance class ensures consistent operational precision. This bearing offers an excellent balance of performance, cost-effectiveness, and ROHS/REACH compliance for modern manufacturing requirements.
639 Bearing Model Code Explained, Specifications & Naming Convention
| Code | Technical Meaning |
|---|---|
| 6 | Series: Deep Groove Ball Bearing |
| 3 | Bore Diameter Series |
| 9 | Bore Diameter: 9 mm |
| Open | Seal Type: No shields or seals, enabling high-speed operation and custom lubrication. |
639 Bearing Structural Features & Performance Benefits
- Optimized Load Capacity: The deep groove raceway and 7 high-grade chrome steel balls enable efficient handling of radial dynamic loads up to 891 lbf and static loads of 374 lbf.
- High-Speed Capability: The stainless steel cage ensures ball stability and low friction, contributing to a limiting speed of 24,000 rpm.
- Precision & Stability: Manufactured to ABEC1 precision class with tight dimensional tolerances, this bearing provides smooth, low-vibration operation.
- Versatile Lubrication: The open construction allows for the application of various greases or oils to suit specific operational temperature ranges from -30°C to 110°C.
- Standard Internal Clearance: The MC3 radial internal clearance (0.002mm to 0.013mm) is suitable for most general applications.
639 Bearing Typical Application Areas
- Small Electric Motors and Gearboxes
- Office Machinery and Computer Cooling Fans
- Light-Duty Conveyor Systems
- Medical and Dental Handpieces
- Precision Instruments and Measuring Devices
- Agricultural Sprayers and Small Pumps
