7008 ACE/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7008 ACE/P4A
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.006mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.007mm 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° 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
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:
$ 214.38
/ each
In Stock
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7008 ACE/P4A Bearing Product Overview & Core Advantages
The 7008 ACE/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. As a single-row bearing, it is optimized to support combined loads, handling significant axial loads in one direction alongside radial loads. Its defining features include a 25° contact angle and a P4 (ABEC-7) tolerance class, ensuring superior running accuracy and high-speed capability. The phenolic resin cage and factory-applied lubrication contribute to its smooth operation and long service life, making it an ideal choice for high-performance machinery.
7008 ACE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series designation, indicating a 40 mm bore, 68 mm OD, and 15 mm width. |
| ACE | Indicates a 25° contact angle and optimized internal geometry for high-speed and high-rigidity performance. |
| P4A | Specifies the P4 (ABEC-7) tolerance class, denoting very high dimensional and running accuracy. |
7008 ACE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4 tolerance class, this bearing provides exceptional dimensional stability and running accuracy, which is critical for applications requiring minimal runout and vibration.
- Optimized Load Capacity: The 25° contact angle is engineered to efficiently support combined radial and axial loads, making it suitable for applications with significant thrust requirements.
- High-Speed Performance: The lightweight phenolic resin cage ensures stability and reduced centrifugal forces at high rotational speeds, contributing to the high limiting speed of 41,000 rpm.
- Reliable Operation: The bearing is pre-lubricated, ensuring immediate and smooth operation from startup. The open seal design allows for optimal heat dissipation and potential re-lubrication in specific configurations.
7008 ACE/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-demand sectors, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes: Where high rotational speeds and precise shaft positioning are paramount.
- High-Frequency Motors and Spindles: In applications demanding low friction and high operational limits.
- Medical and Laboratory Equipment: For centrifuges and other devices that require smooth, quiet, and reliable high-speed rotation.
