7008 ACEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7008 ACEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
15 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2632 lbf
Radial static load rating
1620 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 89.82
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7008 ACEGA/P4A Bearing Product Overview & Core Advantages
The 7008 ACEGA/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. Manufactured to P4A tolerance class, this bearing offers superior dimensional stability and running accuracy. Its single-row design with a 25° contact angle is optimized to handle combined loads, efficiently supporting significant radial loads and thrust loads in one direction. The Extra light (Class A) preload ensures minimal deflection and smooth operation, making it ideal for high-precision, high-rigidity spindles and other critical machinery components.
7008 ACEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| AC | Angular Contact | Design optimized for combined radial and axial loads. |
| EGA | Universal Matchable (SU), Class A Preload | Bearing is one of a universally matched pair that can be mounted in any combination to achieve various preload levels, offering flexibility in application design. |
| P4A | High Precision Tolerance Class | Exceeds ABEC 7 standards, providing extremely tight dimensional and running tolerances for superior performance in high-speed, high-precision applications. |
7008 ACEGA/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of P4A tolerance class and Class A preload provides exceptional system rigidity, minimizing axial and radial runout under operational loads. This is critical for maintaining accuracy in machine tool spindles.
- Optimized Load Capacity: With a 25° contact angle and a dynamic load rating of 2632 lbf, this bearing is engineered to handle high-speed applications where significant radial and one-direction axial loads are present.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the open design facilitates efficient lubrication. This contributes to a high limiting speed of 41,000 rpm.
- Material and Construction: Manufactured from high-grade chrome steel for both rings and balls, ensuring high durability and wear resistance. The precise ball diameter (7.144 mm) and quantity (19) are calculated for optimal stress distribution and smooth operation.
7008 ACEGA/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Robotics: High-accuracy joints and arm assemblies.
- Medical Equipment: Dental handpieces, centrifuge rotors.
- Aerospace Systems: Gyroscopes, navigation instruments.
