708 CDGB/P4A
Miniature Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
708 CDGB/P4A
Basic Information
System of measurement
Metric
Weight
0.012 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
7 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
731 lbf
Radial static load rating
308 lbf
Limiting speed
110 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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.
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 CDGB/P4A Bearing Product Overview & Core Advantages
The 708 CDGB/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy. Engineered to a P4A tolerance class, this bearing delivers superior running precision and dimensional stability. Its 15° contact angle is optimized to handle combined loads, efficiently supporting significant axial loads in one direction alongside radial loads. The light preload (Class B) minimizes deflection under operational stresses, ensuring smooth, quiet, and reliable performance in demanding environments. With its compact design (8mm bore, 22mm OD, 7mm width), it is an ideal solution for space-constrained, high-speed machinery.
708 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 708 | Basic bearing series designation. |
| C | Specifies a 15° contact angle. |
| DG | Indicates a Universal Matchable (SU) bearing, designed to be mounted in pairs (in this case, a set of 2) to achieve a specific preload or rigidity. |
| B | Denotes a Light Preload (Class B). |
| /P4A | Specifies the tolerance class, representing very high precision for both dimensional and running accuracy. |
708 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and high running accuracy. The light preload enhances system rigidity by eliminating internal clearance, which is critical for applications sensitive to deflection.
- Superior Load Capacity: The 15° contact angle design enables the bearing to support substantial combined radial and axial loads simultaneously, making it highly effective for complex loading conditions.
- Optimized High-Speed Performance: The lightweight phenolic cage and precision-ground chrome steel components contribute to low friction and inertia, allowing for a high limiting speed of 110,000 rpm. This makes it an excellent high-speed bearing.
- Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired with another identical bearing in a back-to-back (DB) or face-to-face (DF) arrangement to create a preloaded set, significantly increasing rigidity and moment load capacity without the need for selective assembly.
708 CDGB/P4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for applications demanding high speed, accuracy, and rigidity. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In arm joints and rotary actuators.
- High-Frequency Motors and Spindles: Used in PCB drilling and dental handpieces.
- Optical and Measurement Equipment: For scanners and coordinate measuring machines (CMM).
- Aerospace Actuation Systems: In guidance systems and control surface mechanisms.
