S7008 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7008 CD/P4A
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
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
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
18
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3780 lbf
Radial static load rating
2475 lbf
Limiting speed
20 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:
$ 257.23
/ each
In Stock
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S7008 CD/P4A Bearing Product Overview & Core Advantages
The S7008 CD/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Engineered to a P4 (ABEC-7) tolerance class, it delivers superior running accuracy and rotational stability. This bearing is preloaded, ensuring minimal axial and radial play for high rigidity and precise shaft positioning. Its capability to handle combined loads—significant radial loads alongside thrust loads in one direction—makes it an ideal solution for high-speed spindles and precision machinery where performance and reliability are critical.
S7008 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation and moderate thrust capacity. |
| D | High Load Capacity / Internal Design | Enhanced dynamic load rating for greater durability. |
| P4A | P4 (ABEC-7) Tolerance Class | Guarantees ultra-precise dimensions and runout for high-precision applications. |
S7008 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The combination of a 15° contact angle and factory-applied preload eliminates internal clearance, providing exceptional system stiffness and accurate rotational performance critical for machine tool spindles.
- Superior Load Capacity: Engineered with a high-capacity internal design (suffix D), this bearing offers a dynamic load rating of 3780 lbf, enabling it to handle significant combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction, contributing to a high limiting speed of 20,000 rpm. The standard lubrication is suitable for this high-speed range.
- Premium Materials: Manufactured from chrome steel for both rings and balls, the bearing ensures high hardness, wear resistance, and a long operational life under demanding conditions.
S7008 CD/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for applications where high speed, rigidity, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, high-frequency motor spindles.
- Robotics: High-precision joints and rotary actuators.
- Medical Equipment: Dental handpieces, centrifuges, and imaging devices.
