7005 FE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7005 FE/HCP4ADGA
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
18 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2992 lbf
Radial static load rating
1834 lbf
Limiting speed
85 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
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7005 FE/HCP4ADGA Bearing Product Overview & Core Advantages
The **7005 FE/HCP4ADGA** is a **high-precision angular contact ball bearing** designed for demanding applications requiring exceptional accuracy and performance. Engineered as a **universal matchable (SU)** bearing, it can be paired with another identical bearing in a back-to-back (DB) or face-to-face (DF) arrangement to create a **stiff, preloaded bearing set** capable of handling **combined radial and axial loads**. Its construction with a **phenolic resin cage** and **ceramic balls** enables superior **high-speed performance**, while the **P4A super precision** tolerance ensures smooth, reliable operation in the most critical machinery.
7005 FE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Benefit |
|---|---|---|
| FE | Flush Ground - No filling slot | Provides optimized geometry for superior running accuracy and reduced vibration. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Enables higher speeds, reduced friction, and longer service life compared to all-steel designs. |
| P4A | Super Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy for high-precision spindles and applications. |
| DGA | Universal Matchable (SU designation) | Allows for simple pairing to create a preloaded set for high rigidity without selective matching. |
7005 FE/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and universal matchable (SU) design allow two bearings to be paired, creating a system with high rigidity that can withstand significant combined loads.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduces centrifugal forces, enabling a high limiting speed of 85,000 rpm (grease lubrication).
- Exceptional Precision: Manufactured to P4A tolerance class with flush ground surfaces (FE), this bearing delivers minimal runout and vibration for ultra-smooth operation in precision equipment.
- Extended Service Life: Hybrid ceramic construction offers superior wear resistance, electrical insulation, and the ability to run with less lubrication, contributing to longer bearing life in demanding conditions.
7005 FE/HCP4ADGA Bearing Typical Application Areas
This high-performance bearing is ideally suited for applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC lathes.
- Precision Instrumentation: Measuring devices, optical scanners, and laboratory equipment.
- High-Speed Motors & Drives: Electric spindles, servo motors, and robotics.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units (APUs).
