708 CE/P4A
Miniature Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
708 CE/P4A
Basic Information
System of measurement
Metric
Weight
0.012 kg
Tolerance class
P4 (ABEC-7)
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
-0.005mm to 0
Width
7 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° to 110 °C
Radial dynamic load rating
526 lbf
Radial static load rating
180 lbf
Limiting speed
165 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 103.41
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
708 CE/P4A Bearing Product Overview & Core Advantages
The 708 CE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, this bearing is optimized to accommodate combined loads—primarily thrust loads in one direction along with significant radial loads. Its compact design, featuring a 7mm width, makes it ideal for space-constrained, high-speed machinery. The phenolic cage and preloaded configuration contribute to superior high-speed performance and operational stability, making it a critical component for demanding applications.
708 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 708 | Standard bearing series designation. |
| C | Indicates a 15° contact angle, optimized for high thrust load capacity. |
| E | Denotes a reinforced (high-capacity) design with optimized internal geometry. |
| P4 | Specifies the high-precision tolerance class (equivalent to ABEC-7). |
| A | Indicates that the bearing is supplied with a specific preload for enhanced rigidity. |
708 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class ensures minimal runout and vibration, while the applied preload eliminates internal clearance, providing superior shaft positioning accuracy and system stiffness.
- Optimized Load Capacity: The 15° contact angle and reinforced "E" design enable the bearing to handle high thrust loads in one direction simultaneously with radial loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage offers excellent strength and guidance at high speeds, contributing to the high limiting speed of 165,000 rpm. This cage material also provides inherent lubrication and dampening properties.
- Pre-Lubricated for Immediate Use: The bearing is factory-lubricated, ensuring optimal performance from the start of operation within the specified temperature range of -30°C to 110°C.
708 CE/P4A Bearing Typical Application Areas
This high-precision angular contact bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- High-Speed Spindles for CNC machining centers and grinding machines
- Precision Robotic Arms and joint drives
- High-frequency Machine Tool Motors
- Axles and gearboxes in Aerospace and Defense systems
- High-performance Medical Device rotors and drills
