708 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
708 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.022 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
9
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1186 lbf
Radial static load rating
619 lbf
Limiting speed
110 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
708 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 708 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a universally matchable (SU) pair, it excels at handling combined loads—simultaneously supporting significant radial and axial forces. Its construction with a ceramic ball and phenolic cage enables superior high-speed performance and thermal stability. Preloaded to Extra Light (Class A) and manufactured to a P4A tolerance class, this bearing delivers high rigidity and running accuracy, making it ideal for high-reliability, precision machinery.
708 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a universally matchable (SU) pair of bearings with a 15° contact angle, designed to be mounted in either a DB or DF arrangement. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), which reduce weight and centrifugal force, enhancing high-speed capability. |
| P4A | Denotes an ultra-high precision tolerance class with strict running accuracy and dimensional tolerances for the most demanding applications. |
| DGA | Indicates the bearing is lubricated with a specific high-performance grease suitable for the specified temperature range. |
708 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The universal match (SU) design and P4A tolerance class ensure precise shaft positioning and high system rigidity, critical for minimizing deflection under load.
- Superior High-Speed Performance: The combination of ceramic balls and a lightweight phenolic cage significantly reduces centrifugal forces and friction, allowing for a high limiting speed of 110,000 rpm.
- Optimized Load Capacity: The 15° contact angle is optimized to handle combined radial and axial loads efficiently, providing reliable performance in complex loading conditions.
- Thermal and Operational Stability: Hybrid ceramic construction offers better thermal stability and electrical resistance compared to all-steel bearings, while the pre-lubrication ensures immediate and consistent operation.
708 CD/HCP4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace Actuators and Control Systems
- Semiconductor Manufacturing Equipment
