7005 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 CE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.13 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 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
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3038 lbf
Radial static load rating
1868 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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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7005 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The 7005 CE/HCP4ADBA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex back-to-back (DB) matched set delivers superior high rigidity and stability, making it ideal for systems subjected to combined loads. Manufactured to P4A tolerance class, it ensures minimal runout and precise rotational characteristics. The use of ceramic balls and a phenolic cage contributes to its capabilities as a high-speed bearing, offering reduced friction, lower operating temperatures, and extended service life.
7005 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Basic bearing series, indicating a 25 mm bore diameter, 47 mm outside diameter, and 24 mm width. |
| C | Designates a 15° contact angle. |
| E | Indicates an optimized internal design. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Denotes a high precision tolerance class, with enhanced dimensional and running accuracy. |
| DB | Specifies the Duplex Back-to-Back arrangement of the two bearings in the set. |
| A | Indicates an Extra Light preload. |
7005 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that can withstand significant moment loads, providing exceptional operational stability for precision spindles.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage enables very high limiting speeds (56,000 rpm) with minimal heat generation.
- Precision & Accuracy: Manufactured to ABEC 7 / P4A tolerance standards with tight bore, outside diameter, and width tolerances, ensuring precise shaft positioning and smooth, quiet operation.
- Extended Service Life: Hybrid ceramic construction offers superior wear resistance and is less susceptible to lubrication failure, significantly increasing bearing life in demanding conditions.
- Optimized for Combined Loads: The 15° contact angle is engineered to efficiently handle combined radial and axial loads.
7005 CE/HCP4ADBA Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, speed, and rigidity are critical. Key applications include:
- High-Frequency CNC Spindles for milling, grinding, and routing
- Precision Machine Tool main shafts and ball screws
- High-Speed Motors and turbo-molecular pumps
- Aerospace & Defense instrumentation and control systems
- Medical Equipment such as high-speed dental handpieces and centrifuges
