709 CE/HCP4ATGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
709 CE/HCP4ATGA
Basic Information
System of measurement
Metric
Weight
0.039 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
21 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
1258 lbf
Radial static load rating
630 lbf
Limiting speed
95 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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709 CE/HCP4ATGA Bearing Product Overview & Core Advantages
The 709 CE/HCP4ATGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. Engineered to a P4A tolerance class, it offers superior dimensional stability and running accuracy. Its ceramic ball construction significantly reduces centrifugal forces, enabling higher limiting speeds and operation with minimal lubrication. The bearing is universally matchable (SU), allowing for flexible mounting in preloaded sets to achieve optimal system rigidity. This combination of features makes it ideal for high-precision, high-reliability spindles and machinery.
709 CE/HCP4ATGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 709 CE/HCP4ATGA provides detailed technical specifications:
- 709: Basic bearing series, indicating a 9 mm bore diameter and a specific cross-section.
- C: Represents a 15° contact angle, optimized for combined radial and axial loads.
- E: Denotes an optimized internal design, often for higher speed and lower torque.
- HC: Indicates the use of Hybrid Ceramic balls (ceramic balls with steel rings).
- P4A: Specifies the tolerance class, defining very tight dimensional and running accuracy limits.
- T: Refers to the phenolic (synthetic resin) cage, which is lightweight and suitable for high speeds.
- GA: Indicates a specific preload level (Extra light / Class A).
709 CE/HCP4ATGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls provides superior performance. Ceramic balls are lighter, harder, and have a lower coefficient of thermal expansion than steel, leading to reduced friction, lower operating temperatures, and significantly higher limiting speeds (95,000 rpm).
- Precision & Rigidity: Manufactured to ABEC 7 / P4A precision standards, this bearing ensures minimal runout and vibration. The 15° contact angle and universal matchable (SU) design allow for the creation of preloaded sets (3 bearings in a matched set are typical) that deliver high system rigidity and precise shaft positioning.
- High-Speed Cage: The lightweight, robust phenolic cage (T) is engineered for high-speed operation, providing excellent guidance and stability to the ceramic balls under centrifugal forces.
- Optimized Lubrication: The bearing comes pre-lubricated, suitable for the specified temperature range (-30°C to 110°C), ensuring immediate startup and reliable operation.
709 CE/HCP4ATGA Bearing Typical Application Areas
This high-performance angular contact bearing is specifically designed for demanding applications, including:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Dental and Medical Handpiece Drives
- Aerospace Instrumentation
- High-Performance Robotics
