S7008 CE/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.38 kg
Tolerance class
P4A
Seal type
Sealed
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
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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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S7008 CE/P4ADBA Bearing Product Overview & Core Advantages
The S7008 CE/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stiffness and the ability to withstand combined loads, including significant radial and bidirectional axial loads. Manufactured to a P4A tolerance class and featuring a phenolic cage, it is engineered for high-speed operation and reliable performance in precision machinery.
S7008 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number S7008 CE/P4ADBA is decoded as follows:
- S: Denotes a universal matching bearing, but in this specific configuration, it is supplied as a pre-matched duplex set.
- 7008: Standard bore (40 mm) and outside diameter (68 mm) designation for this bearing series.
- CE: Indicates a high-precision bearing with optimized internal geometry and surface finish.
- P4A: Specifies the tolerance class, indicating extremely tight dimensional and running accuracy (superior to ABEC 7).
- DB: Designates the Duplex Back-to-Back mounting arrangement of the two bearings in the set.
- A: Signifies the preload level is "Extra Light" (Class A).
S7008 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back configuration creates a rigid bearing system that effectively resists moment loads and supports heavy combined radial and axial loads from both directions.
- Precision & High-Speed Performance: The P4A tolerance class ensures minimal runout and smooth operation. Combined with the lightweight phenolic resin cage, this allows for a high limiting speed of 41,000 rpm, making it an ideal high-speed bearing.
- Optimized Internal Design: With a 15° contact angle, 19 precision balls, and a bore diameter of 40 mm, the bearing is optimized for high-speed precision applications requiring rapid acceleration and deceleration.
- Sealed & Pre-lubricated: The sealed design with grease lubrication protects against contamination and provides long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7008 CE/P4ADBA Bearing Typical Application Areas
This bearing is ideally suited for high-precision, high-speed rotational equipment, including:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Aerospace & Defense Systems
