708 CE/P4ADT
Miniature Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
708 CE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.024 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
8 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
22 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
8
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
848 lbf
Radial static load rating
360 lbf
Limiting speed
100 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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708 CE/P4ADT Bearing Product Overview & Core Advantages
The 708 CE/P4ADT is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. This duplex tandem (DT) arrangement consists of two matched bearings, preloaded to deliver superior axial rigidity and handle significant combined loads. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and smooth operation, making it ideal for high-precision, high-reliability spindles and machinery.
708 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Contact angle of 15°, optimized for high-speed applications and axial load capacity. |
| P4A | High precision tolerance class with enhanced dimensional and running accuracy. |
| DT | Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity and rigidity in one direction. |
708 CE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle provide exceptional axial stiffness, enabling the bearing to withstand heavy combined loads (radial and axial) with minimal deflection.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and P4A precision contribute to a high limiting speed of 100,000 rpm.
- Precision Engineering: Manufactured from chrome steel with tight bore and OD tolerances, this bearing ensures smooth, quiet, and vibration-free operation critical for precision equipment.
- Preloaded & Ready-to-Install: Supplied as a preloaded matched set, the bearing simplifies installation and guarantees immediate, optimal performance without requiring additional adjustment.
708 CE/P4ADT Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpiece Drives
- Aerospace Instrumentation
