7011 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 CD/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.63 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
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14332 lbf
Radial static load rating
14738 lbf
Limiting speed
34 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
No drawings available at the moment, will be launched soon
Price:
$ 318.61
/ each
In Stock
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7011 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7011 CD/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. Operating as a universally matchable (SU) pair, this bearing is designed to handle combined loads—simultaneously supporting significant radial loads and axial loads in one direction. Its construction with ceramic balls and a P4A super-precision tolerance class ensures superior high-speed capability, reduced friction, and extended service life, making it ideal for high-reliability, high-rigidity spindle arrangements.
7011 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7011 CD/HCP4ADGA is decoded as follows:
- 7011: Standard series designation for a metric angular contact ball bearing with a 55mm bore, 90mm OD, and 36mm width.
- C: Indicates a 15° contact angle, optimized for high-speed applications and high axial load capacity.
- D: Signifies that the bearing is part of a universally matchable (SU) pair. Two such bearings can be mounted together in various configurations (e.g., back-to-back, face-to-face) to accommodate complex load conditions.
- HC: Denotes the use of Hybrid Ceramic components, specifically ceramic balls (Silicon Nitride) which provide higher speed limits, reduced weight, and superior performance under poor lubrication conditions.
- P4A: Specifies a super-precision tolerance class exceeding ABEC 7/ISO P4 standards, ensuring extremely tight running accuracy for minimal vibration and maximum rotational precision.
- DGA: Indicates the bearing is supplied lubricated with a specific high-performance grease suitable for the specified temperature range and operating conditions.
7011 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The universal matchable (SU) design allows two bearings to be precisely paired, creating a highly rigid bearing system capable of withstanding complex combined radial and axial loads.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage, ceramic balls, and a 15° contact angle significantly reduces centrifugal forces and operating temperatures, enabling a high limiting speed of 34,000 rpm.
- Enhanced Durability and Longevity: Hybrid ceramic construction offers excellent wear resistance and electrical insulation properties. The open seal type allows for optimal lubrication flow, which is crucial for heat dissipation in high-speed operations.
- Precision Engineering: Manufactured to P4A tolerance with a preload of Extra light / Class A, this bearing guarantees minimal runout and vibration, which is critical for maintaining accuracy in precision machinery.
7011 CD/HCP4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small precision spindles.
- Aerospace and Defense Systems: Gyroscopes, navigation instruments, and auxiliary power units.
- Medical Equipment: Centrifuges and high-speed dental drills.
