7007 CD/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7007 CD/HCP4ADT
Basic Information
System of measurement
Metric
Weight
0.27 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
35 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
62 mm
Outside diameter tolerance
-0.004mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
16
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5738 lbf
Radial static load rating
4275 lbf
Limiting speed
56 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
Ceramic
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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7007 CD/HCP4ADT Bearing Product Overview & Core Advantages
The 7007 CD/HCP4ADT is a high-precision duplex tandem angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched set bearing features a 15° contact angle and is manufactured to P4A super-precision tolerance standards. Its core advantage lies in its ability to handle combined loads (radial and axial) efficiently in a single direction with maximum stiffness, making it ideal for high-speed spindles and other precision machinery where minimal deflection is critical. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speeds, and extended service life.
7007 CD/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7007 | Basic bearing series and size designation (35mm bore, 62mm OD). |
| C | 15° nominal contact angle. |
| D | Indicates a duplex (two-bearing) set. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls with steel rings. |
| P4A | Super-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| A | Specific tolerance for bore and outside diameter. |
| DT | Duplex Tandem arrangement. The two bearings are mounted to face the same direction, increasing axial load capacity in one direction and system rigidity. |
7007 CD/HCP4ADT Bearing Structural Features & Performance Benefits
- Superior Rigidity & Load Capacity: The duplex tandem (DT) arrangement preloads the two bearings against each other, creating an exceptionally stiff bearing system. This configuration is optimized to handle heavy combined loads, with a significant emphasis on unidirectional axial loads.
- Enhanced High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage results in lower operating temperatures and a high limiting speed of 56,000 rpm. This makes it a premier high-speed bearing.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining accuracy in precision applications like machine tool spindles.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ready for installation and initial operation.
7007 CD/HCP4ADT Bearing Typical Application Areas
This precision angular contact ball bearing is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes.
- High-Frequency Motors and Spindles: Where maximum rotational accuracy and speed are paramount.
- Aerospace & Defense Systems: Gyroscopes, navigation systems, and other critical rotating assemblies.
