638/8-2Z
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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Part No.
Part No.
638/8-2Z
Basic Information
Bearing type
Ball
System of measurement
Metric
Construction
Single Row
Weight
0.0043 kg
Tolerance class
P6
Seal type
Shielded
For load direction
Radial
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
16 mm
Outside diameter tolerance
-0.007mm to 0
Width
6 mm
Width tolerance
-0.12mm to 0
Performance
Temperature range
-30° to 120 °C
Radial dynamic load rating
184 lbf
Radial static load rating
67 lbf
Limiting speed
45 X 1000 rpm
Lubrication
Grease
Radial internal clearance
CN
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:
$ 12.07
/ each
In Stock
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638/8-2Z Bearing Product Overview & Core Advantages
The 638/8-2Z is a metric single row deep groove ball bearing designed for exceptional performance in compact, high-precision applications. Engineered to primarily handle radial loads, its shielded design ensures reliable operation. This bearing is characterized by its high limiting speed and is pre-lubricated with grease for long service life, making it an ideal choice for applications demanding reliability and low maintenance.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 638 | Standard series designation for deep groove ball bearings. |
| 8 | Bore Diameter of 8 mm. |
| -2Z | Bearing is equipped with shields on both sides. This provides effective protection against contamination while allowing for high-speed operation. |
638/8-2Z Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a stainless steel cage and optimized grease lubrication enables a high limiting speed of 45,000 rpm, making it suitable for demanding rotational applications.
- Robust Construction: Manufactured from chrome steel for both rings and balls, this bearing offers high durability and resistance to wear.
- Precision & Reliability: Built to P6 tolerance class and standard CN radial internal clearance, ensuring consistent performance, smooth operation, and precise rotational accuracy.
- Maintenance-Free Operation: The 2Z shields and factory-applied grease provide sealed-for-life lubrication, protecting the bearing from contaminants and eliminating the need for re-lubrication.
638/8-2Z Bearing Typical Application Areas
This versatile deep groove ball bearing is widely used in various precision industries and equipment, including:
- Small Electric Motors
- Precision Instruments and Gauges
- Office Automation Equipment (e.g., printers, scanners)
- Medical Devices
- Computer Cooling Fans
- Small Gearboxes and Drives
