7011 FEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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7011 FEGA/HCP4A Bearing Product Overview & Core Advantages
The 7011 FEGA/HCP4A is a single-row angular contact ball bearing engineered for ultra-high precision applications. Positioned in the P4A tolerance class, it delivers exceptional dimensional accuracy and rotational precision. Its ceramic ball construction and phenolic cage enable superior high-speed performance with a limiting speed of 34,000 rpm, while the 18° contact angle provides optimal capacity for combined radial and axial loads. This bearing comes pre-lubricated and is universally matchable (SU), allowing for precise preload control when mounted in pairs, making it ideal for demanding, high-rigidity spindle systems.
7011 FEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Advantage |
|---|---|---|
| 7011 | Basic bearing series with 55mm bore, 90mm OD | Standard metric dimensions |
| FE | Fiberglass reinforced phenolic cage | Excellent high-speed capability, reduced friction |
| GA | Universal matchable bearing set | Precise preload control when mounted in pairs |
| HC | Hybrid ceramic balls (silicon nitride) | Higher speed, reduced heat generation, longer life |
| P4A | Super precision tolerance class | Exceptional running accuracy and dimensional stability |
7011 FEGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride ceramic balls significantly reduces friction, heat generation, and wear, enabling higher operating speeds and extended service life compared to all-steel bearings.
High-Speed Phenolic Cage: The fiberglass reinforced phenolic cage provides excellent dimensional stability at high temperatures and rotational speeds, contributing to the bearing's impressive 34,000 rpm limiting speed.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration for superior rotational accuracy.
Optimized Load Capacity: With a 18° contact angle and 24 ceramic balls, the bearing efficiently handles combined radial and axial loads, offering a dynamic load rating of 3712 lbf and static load rating of 2700 lbf.
Universal Matching Capability: As a universally matchable (SU) bearing, it can be precisely paired with another identical bearing to achieve specific preload conditions without selective matching.
7011 FEGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines
- Precision Medical Equipment: Dental handpieces, surgical tools, and laboratory instrumentation
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- High-Speed Motors: Spindle motors, turbochargers, and specialized industrial drives
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages
