7011 ACDGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 ACDGA/HCP4AL
Basic Information
System of measurement
Metric
Weight
0.32 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
18 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
8348 lbf
Radial static load rating
6975 lbf
Limiting speed
34 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
No drawings available at the moment, will be launched soon
In Stock
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7011 ACDGA/HCP4AL Bearing Product Overview & Core Advantages
The 7011 ACDGA/HCP4AL is a single-row angular contact ball bearing engineered for ultra-high precision and superior performance in demanding applications. Positioned in the P4A tolerance class, it delivers exceptional dimensional accuracy and running precision. Its key advantage lies in its ability to support combined loads (radial and axial) efficiently, while the ceramic ball construction and phenolic cage enable outstanding high-speed capabilities and thermal stability. This bearing is pre-lubricated and designed for universal matching (SU), allowing for simplified installation and optimized performance in preloaded arrangements.
7011 ACDGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
The model number 7011 ACDGA/HCP4AL is decoded as follows:
- 7011: Basic series designation, indicating a metric, single-row angular contact ball bearing with a 55mm bore, 90mm OD, and 18mm width.
- A: Signifies a 25° contact angle, optimized for supporting higher axial loads.
- CDGA: Indicates a specific internal design and Universal Matchable (SU) status, meaning two identical bearings can be paired for duplex mounting (e.g., back-to-back or face-to-face) to support combined loads in both directions.
- HCP4AL: Denotes the P4A tolerance class (higher than ABEC 7/ISO P4), signifying extremely tight dimensional and running accuracy limits for superior performance.
7011 ACDGA/HCP4AL Bearing Structural Features & Performance Benefits
- High-Speed & Thermal Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly lowers friction and heat generation, enabling a high limiting speed of 34,000 rpm.
- Precision & Rigidity: Manufactured to P4A super-precision tolerance with an Extra Light (Class A) preload, this bearing provides maximum shaft rigidity, minimal runout, and precise rotational accuracy, which is critical for machine tool spindles and other high-precision equipment.
- Load Capacity: The 25° contact angle design is optimized to handle significant axial loads in one direction while also supporting substantial radial loads, offering a robust solution for combined load conditions.
- Universal Matching & Simplified Assembly: As a Universal Matchable (SU) bearing, any two bearings from this lot can be directly mounted together in a preloaded arrangement without selective matching, simplifying the assembly process and ensuring consistent, high performance.
7011 ACDGA/HCP4AL Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery requiring extreme precision, speed, and rigidity. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Where minimal vibration and heat buildup are critical.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
