7008 ACD/P4AQGA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7008 ACD/P4AQGA
Basic Information
System of measurement
Metric
Weight
0.77 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
60 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9518 lbf
Radial static load rating
9338 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
4
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
In Stock
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7008 ACD/P4AQGA Bearing Product Overview & Core Advantages
The 7008 ACD/P4AQGA is a high-precision double row angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Its design enables it to simultaneously handle significant combined loads (radial and axial loads from both directions), making it an ideal solution for high-speed, high-reliability machinery. The bearing features an extra light preload (Class A) for smooth, precise operation and is supplied as part of a universally matchable (SU) set, ensuring optimal performance and simplified installation in complex arrangements.
7008 ACD/P4AQGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACD | 25° Contact Angle, Double Row | Optimized for high axial load capacity and rigidity. |
| P4A | High Precision Tolerance Class | Guarantees extremely tight running accuracy for superior performance. |
| QGA | Phenolic Cage, Universal Match, Lubricated | Facilitates high-speed operation and comes pre-lubricated for immediate use. |
7008 ACD/P4AQGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design and 25° contact angle provide superior resistance to deformation under combined loads, ensuring stable shaft positioning and extended service life.
- Precision & Speed: Manufactured to P4A tolerance class with an extra light preload, this bearing minimizes vibration and noise, enabling smooth operation at high rotational speeds. The lightweight phenolic cage is ideal for high-speed applications.
- Universal Matchability (SU): Bearings in this set are universally matchable, allowing for flexible mounting in various preload configurations (e.g., back-to-back, face-to-face) without selective assembly, simplifying the design and installation process.
- Optimized for Performance: The open seal type allows for custom lubrication regimes, while the standard pre-lubrication ensures immediate operational readiness. The use of high-grade chrome steel for rings and balls ensures durability and a long operational lifespan.
7008 ACD/P4AQGA Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications in:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
