7005 ACEGA/HCP4AL1
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 ACEGA/HCP4AL1
Basic Information
System of measurement
Metric
Weight
0.065 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
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1784 lbf
Radial static load rating
878 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
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7005 ACEGA/HCP4AL1 Bearing Product Overview & Core Advantages
The 7005 ACEGA/HCP4AL1 is a high-precision angular contact ball bearing engineered for demanding applications. Its core advantage lies in its ability to handle combined loads—significant radial and axial loads in one direction—simultaneously. Manufactured to an ultra-precise P4A tolerance class and featuring a phenolic resin cage and ceramic balls, this bearing is optimized for high-speed operation and superior rigidity. The universal matching (SU) designation allows two bearings to be precisely paired for optimal preload and performance in duplex arrangements.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Standard series number (25mm bore, 47mm OD). |
| A | 30° contact angle (standard for this series). |
| CEGA | Internal design code for optimized performance. |
| HC | Indicates the use of hybrid ceramic balls (Silicon Nitride). |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| L1 | Light preload designation for the matched set. |
7005 ACEGA/HCP4AL1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This enables higher limiting speeds, longer service life, and improved reliability in high-speed applications.
- Phenolic Resin Cage: This lightweight and robust cage material is ideal for high-speed performance, offering excellent dimensional stability and low friction at elevated rotational speeds.
- High Rigidity & Load Capacity: The 25° contact angle and precision-ground raceways provide high rigidity and are specifically designed to support substantial combined (radial and axial) loads.
- Ultra-Precision: The P4A tolerance class ensures minimal runout and vibration, which is critical for applications requiring extreme rotational accuracy and smooth operation.
- Universal Matching (SU): Bearings are universal matchable, allowing for flexible mounting in duplex pairs (DB, DF, DT) to achieve specific preload and stiffness characteristics without selective sorting.
7005 ACEGA/HCP4AL1 Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles (High-speed milling and grinding)
- Precision Robotics and Automation Arms
- High-Frequency Machining Centers
- Dental and Medical Handpieces
- Aerospace Instrumentation and Guidance Systems
