S7008 ACDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 ACDGB/P4A
Basic Information
System of measurement
Metric
Weight
0.19 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
15 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
3578 lbf
Radial static load rating
2340 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
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:
$ 77.24
/ each
In Stock
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S7008 ACDGB/P4A Bearing Product Overview & Core Advantages
The S7008 ACDGB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a single bearing from a universally matchable (SU) pair, it delivers superior performance in high-speed and high-rigidity scenarios. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it an ideal choice for precision spindles and other critical machinery components. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and consistent operation.
S7008 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number S7008 ACDGB/P4A provides detailed technical specifications:
- S7008: Basic designation for a 40mm bore, 68mm OD bearing.
- AC: Angular Contact design with a 25° contact angle.
- D: Specific internal design optimized for high-speed operation.
- GB: Indicates Light preload / Class B for reduced deflection and vibration.
- P4A: Denotes a super-precision tolerance class exceeding ABEC-7 standards, ensuring extreme dimensional and running accuracy.
S7008 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 25° contact angle and light preload (Class B) provide high system stiffness and precise rotational accuracy, essential for machine tool spindles.
- Optimized for High Speeds: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to the high limiting speed of 41,000 rpm.
- Superior Load Capacity: Engineered to handle significant combined radial (3578 lbf) and axial loads, offering robust performance under demanding conditions.
- Sealed and Lubricated for Life: The sealed design with factory-applied grease lubrication protects against contamination and provides maintenance-free operation within the specified temperature range (-30°C to 110°C).
S7008 ACDGB/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications requiring supreme precision and speed, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Speed Motors and Spindles
- Precision Robotics
- Aerospace Instrumentation
- Medical Equipment (e.g., high-speed dental handpieces)
