7000 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7000 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.034 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
16 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
1492 lbf
Radial static load rating
731 lbf
Limiting speed
185 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
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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7000 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7000 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional speed and accuracy. Engineered to accommodate combined loads (radial and axial) simultaneously, this bearing features a 15° contact angle and is supplied as a universally matchable (SU) pair, enabling simplified mounting in preloaded arrangements for superior rigidity and rotational precision. Its construction with ceramic balls and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it ideal for high-reliability machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7000 C | Basic bearing series with a 15° contact angle. |
| D | Signifies a universally matchable (SU) bearing designed to be paired in any combination. |
| HC | Indicates the use of Hybrid Ceramic balls (ceramic balls with steel rings). |
| P4A | Denotes a high-precision tolerance class (superior to ABEC 7), ensuring minimal runout and vibration. |
| DGA | Specifies a phenolic (polyamide) cage design, optimized for high-speed operation and reduced weight. |
7000 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a limiting speed of 185,000 rpm. This construction also offers superior resistance to wear and a longer operational lifespan.
- Precision & Rigidity: The P4A tolerance class and universal match (SU) design allow for easy creation of preloaded sets, resulting in a very stiff bearing system that minimizes deflection under load, which is critical for high-precision spindles.
- High-Speed Capability: The lightweight phenolic cage (DGA) is exceptionally well-suited for high rotational speeds, providing excellent dimensional stability and low friction under high centrifugal forces.
- Combined Load Capacity: The 15° contact angle is optimized to handle significant radial loads and axial loads in one direction efficiently, making it a versatile choice for complex loading conditions.
7000 CD/HCP4ADGA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors: Spindles for PCB drilling and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
