7011 FE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 FE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.72 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6075 lbf
Radial static load rating
5400 lbf
Limiting speed
34 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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7011 FE/HCP4ADBA Bearing Product Overview & Core Advantages
The **7011 FE/HCP4ADBA** is a premium **duplex angular contact ball bearing** designed for the most demanding **high-precision** and **high-speed** applications. This **metric** bearing features a **back-to-back (DB) matched arrangement** and is manufactured to **P4A super-precision tolerance** standards. Its core advantage lies in its ability to handle **combined loads**—significant radial and axial loads in both directions—simultaneously. The combination of a **phenolic resin cage** and **ceramic balls** enables exceptional **high-speed performance** and operational stability, making it ideal for applications requiring maximum rigidity and rotational accuracy.
7011 FE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation (55mm bore, 90mm OD). |
| FE | Indicates a specific internal design and **P4A tolerance class**. |
| HC | Refers to the **phenolic resin cage**, which is lightweight and ideal for high speeds. |
| P4A | Denotes **super-precision** dimensional and running accuracy, superior to ABEC 7. |
| DB | Specifies the **duplex back-to-back** mounting arrangement for high moment stiffness. |
| A | Indicates an **extra light preload** for optimal performance and minimal friction. |
7011 FE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The **duplex back-to-back (DB) arrangement** creates a wide, rigid support system that effectively resists moment loads and tilting moments, ensuring exceptional shaft positioning accuracy.
- Superior High-Speed Capability: The lightweight **phenolic resin cage (HC)** and low-density **ceramic balls** significantly reduce centrifugal forces, enabling a high **limiting speed** of 34,000 rpm and reducing operational temperature.
- Precision & Longevity: Manufactured to **P4A tolerance class** with a **18° contact angle**, this bearing delivers ultra-smooth, quiet, and vibration-free operation, extending the service life of the entire application.
- Optimized for Combined Loads: The angular contact design is inherently suited to handle **combined radial and axial loads** simultaneously, a critical requirement for many precision spindles.
7011 FE/HCP4ADBA Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, speed, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors and generators.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
