S7009 CDGA/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7009 CDGA/P4A
Basic Information
System of measurement
Metric
Weight
0.24 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
9.525 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6435 lbf
Radial static load rating
5040 lbf
Limiting speed
46 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
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
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In Stock
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S7009 CDGA/P4A Bearing Product Overview & Core Advantages
The S7009 CDGA/P4A is a high-precision, single-row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to accommodate combined loads (radial and axial loads in one direction), it features an extra light preload (Class A) and a P4A super-precision tolerance class, ensuring smooth operation, minimal vibration, and superior running accuracy. Its compact design and universal matchable (SU) designation allow for flexible mounting in various preload configurations, making it an ideal choice for high-speed spindles and precision machinery.
S7009 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series, indicating a metric, single-row angular contact ball bearing with a 45mm bore. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high axial rigidity. |
| DG | Indicates the bearing is Universal Matchable (SU). Two bearings can be mounted in a universal arrangement (face-to-face or back-to-back) to achieve a specific preload. |
| A | Denotes an Extra Light Preload (Class A), which minimizes friction and heat generation for superior high-speed performance. |
| P4A | Specifies a super-precision tolerance class with enhanced running accuracy requirements beyond standard ABEC 7/P4, ensuring extremely low vibration and noise levels. |
S7009 CDGA/P4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The phenolic resin cage and optimized internal geometry, combined with the 15° contact angle and light preload, enable a high limiting speed of 46,000 rpm, making it suitable for very high-speed spindle applications.
- Superior Rigidity and Running Accuracy: Manufactured to P4A super-precision tolerances for bore, outside diameter, and width, this bearing provides exceptional dimensional stability and rotational accuracy, critical for machine tool spindles.
- Optimized Load Capacity: The design effectively handles combined radial and axial loads. With a dynamic load rating of 6435 lbf and a static load rating of 5040 lbf, it offers reliable performance under demanding operating conditions.
- Sealed and Pre-Lubricated: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S7009 CDGA/P4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Equipment: High-frequency motors, dental handpieces, and laboratory instrumentation.
- Robotics: High-accuracy robotic arm joints and servo motors.
