7000 CD/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7000 CD/HCP4ATBTA
Basic Information
System of measurement
Metric
Weight
0.051 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
10 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
26 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
9
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1989 lbf
Radial static load rating
1102 lbf
Limiting speed
185 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
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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7000 CD/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7000 CD/HCP4ATBTA is a precision quadruplex matched set of angular contact ball bearings designed for the most demanding high-performance applications. This metric series bearing is characterized by its ability to handle combined loads (radial and axial) simultaneously with exceptional accuracy and stability. Its core advantages stem from the QBC (Quadruplex Back-to-Back) arrangement, which provides extremely high system rigidity and moment load capacity. Manufactured to P4A tolerance class and featuring ceramic balls, it is engineered for high-speed operation, reduced friction, and long service life in precision machinery.
7000 CD/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7000 CD | Basic bearing series designation, indicating a 10mm bore, 26mm OD angular contact bearing. |
| HC | Hybrid Ceramic, signifying the use of ceramic balls for superior high-speed performance and reduced wear. |
| P4A | The tolerance class, denoting very high precision levels for bore, outer diameter, and width. |
| T | Indicates a phenolic (textile laminate) cage, ideal for high-speed applications. |
| BT | Back-to-Back mounting arrangement for the individual bearings within the set. |
| A | Specifies an Extra Light preload class, optimizing the bearing for minimal friction and high-speed running accuracy. |
7000 CD/HCP4ATBTA Bearing Structural Features & Performance Benefits
- Quadruplex Matched Set (QBC): The four bearings are supplied as a universally matched set, ground to precise operational tolerances. This back-to-back arrangement creates a highly rigid bearing system capable of withstanding significant moment loads and providing exceptional rotational accuracy.
- Hybrid Ceramic Construction: The use of ceramic balls with a chrome steel ring significantly reduces centrifugal forces, lowers operating temperature, and extends service life. This is critical for achieving the high limiting speed of 185,000 rpm.
- High-Precision & Rigidity: Manufactured to ABEC 7 / P4A precision standards with tight bore and OD tolerances, this bearing ensures minimal runout and vibration. The matched set configuration delivers superior system rigidity.
- Optimized for High Speed: The combination of the phenolic cage, ceramic balls, 15° contact angle, and light preload is specifically engineered to minimize friction and dynamic instability, enabling reliable operation at extreme rotational speeds.
- Pre-lubricated: The bearing comes lubricated from the factory, ready for immediate installation and initial operation within its specified temperature range.
7000 CD/HCP4ATBTA Bearing Typical Application Areas
This bearing is designed for ultra-high-speed and high-precision applications where maximum rigidity and minimal runout are paramount. Key industries and equipment include:
- High-Frequency CNC Spindles for precision machining and milling centers.
- Turbocharger Shafts in performance automotive and aerospace systems.
- Precision Grinding Spindles.
- High-Speed Dental and Medical Handpieces.
- Advanced Robotics and direct-drive motor systems.
