709 CE/P4ADBA
Miniature Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
709 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.028 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
9 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
24 mm
Outside diameter tolerance
-0.004mm to 0
Width
14 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.969 mm
Ball quantity
9
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
952 lbf
Radial static load rating
418 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
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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709 CE/P4ADBA Bearing Product Overview & Core Advantages
The 709 CE/P4ADBA is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement bearing set is preloaded to Extra Light (Class A) specifications, ensuring minimal axial and radial play for superior system stability. Its primary advantage lies in its ability to handle combined loads efficiently, making it ideal for high-speed spindles and precision machinery where high rigidity and running accuracy are paramount.
709 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 709 CE/P4ADBA is decoded as follows:
- 709: Basic bearing series, indicating a metric, light series bearing with a 9mm bore.
- C: Denotes a 15° contact angle, optimized for handling combined radial and axial loads.
- E: Indicates optimized internal geometry and surface treatment for high-speed operation.
- P4A: The tolerance class, signifying very high precision levels for both dimensional and running accuracy, superior to ABEC 7.
- DB: Duplex Back-to-Back arrangement. This configuration increases moment rigidity and is designed to withstand overturning moments.
- A: Specifies the preload level, in this case, Extra Light (Class A).
709 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement and Class A preload create a highly rigid bearing system that effectively resists moment loads and minimizes deflection under operational stresses.
- Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees extremely tight dimensional and running accuracy, which is critical for applications like machine tool spindles.
- Optimized High-Speed Capability: Featuring a lightweight phenolic resin cage and a 15° contact angle, the bearing is engineered for high-speed operation up to 95,000 rpm, reducing centrifugal forces and operational temperature.
- Superior Material Construction: Both rings and balls are made from high-grade chrome steel, providing excellent wear resistance and durability for a long service life.
709 CE/P4ADBA Bearing Typical Application Areas
This precision bearing is ideally suited for demanding applications where high speed, accuracy, and rigidity are non-negotiable. Key sectors include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors and Spindles: Applications requiring minimal runout and vibration.
- Robotics: Critical joints and arm assemblies requiring high positional accuracy.
