7008 CE/P4ADT
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7008 CE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.37 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
30 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3442 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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7008 CE/P4ADT Bearing Product Overview & Core Advantages
The 7008 CE/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. This duplex tandem (DT) arrangement consists of two matched bearings, preloaded to deliver superior axial rigidity and handle significant combined loads. Manufactured to a P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed, high-precision machinery where uncompromising performance is critical.
7008 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates a 15° contact angle, optimized for high axial load capacity and high-speed operation. |
| P4A | Denotes a high precision tolerance class with enhanced dimensional and running accuracy, superior to ABEC 7. |
| DT | Signifies a Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity and rigidity in one direction. |
7008 CE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and preload create an exceptionally stiff bearing system, capable of handling heavy combined radial and axial loads in one direction with minimal deflection.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized 15° contact angle and precision manufacturing contribute to a high limiting speed of 56,000 rpm.
- Precision & Accuracy: Manufactured to P4A tolerance standards with tight bore, outside diameter, and width tolerances, ensuring smooth, quiet, and vibration-free operation essential for precision equipment.
- Durability & Reliability: Components made from high-grade chrome steel provide excellent wear resistance and long service life under demanding operating conditions.
7008 CE/P4ADT Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Spindles
- Medical & Dental Equipment
- Aerospace Actuation Systems
