707 CE/P4ADT
Miniature Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
707 CE/P4ADT
Basic Information
System of measurement
Metric
Weight
0.014 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
7 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
19 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
3.572 mm
Ball quantity
8
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
702 lbf
Radial static load rating
286 lbf
Limiting speed
230 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
In Stock
Price available upon request.
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707 CE/P4ADT Bearing Product Overview & Core Advantages
The 707 CE/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring ultra-precise rotational accuracy and minimal runout. Its primary advantage lies in its ability to handle significant combined loads (radial and axial) in one direction with high rigidity, making it an ideal solution for high-speed spindle applications where maximum stiffness and positional accuracy are critical.
707 CE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation with a balanced capacity for radial and axial loads. |
| E | Optimized Internal Design | Enhanced internal geometry for increased load capacity and speed capability. |
| P4A | High Precision Tolerance Class | Superior dimensional and running accuracy for applications requiring minimal vibration and high positional precision. |
| DT | Duplex Tandem Arrangement | Two bearings are mounted in tandem to increase axial load capacity and rigidity in one direction. |
707 CE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 15° contact angle create an exceptionally stiff bearing system capable of withstanding high combined loads. This configuration is specifically designed to maximize axial load carrying capacity in a single direction.
- High-Speed Performance: The phenolic resin cage is lightweight and robust, contributing to lower centrifugal forces and smoother operation at the high limiting speed of 230,000 rpm. The optimized internal design (suffix E) further enhances high-speed capability.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on the bore diameter, outside diameter, and width, this bearing ensures precise shaft positioning and minimal runout for superior machine tool accuracy.
- Preloaded & Ready-to-Mount: Supplied as a preloaded set, the 707 CE/P4ADT eliminates internal clearance, providing immediate high stiffness and accuracy upon installation, which simplifies assembly and reduces machine setup time.
707 CE/P4ADT Bearing Typical Application Areas
This precision duplex tandem bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where rigidity and accuracy are paramount.
- Precision Rotary Systems: High-frequency spindles for PCB drilling and semiconductor manufacturing equipment.
- High-Speed Motors: Servo motors and spindle drives requiring minimal vibration and high running accuracy.
