7011 ACD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 ACD/HCP4ADGB
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
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
13612 lbf
Radial static load rating
13950 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
Light / Class B
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 ACD/HCP4ADGB Bearing Product Overview & Core Advantages
The 7011 ACD/HCP4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a universally matchable (SU) bearing supplied in a pre-set pair, it is optimized to handle combined loads—significant radial loads and axial loads in one direction—simultaneously. Its core advantages stem from a P4A super-precision tolerance class, a 25° contact angle for high axial rigidity, and the use of ceramic balls and a phenolic cage, which collectively enable superior high-speed performance, reduced friction, and extended service life in precision machinery.
7011 ACD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
The model number 7011 ACD/HCP4ADGB provides a detailed technical specification through its suffixes:
- 7011: Basic designation indicating a 55mm bore, 90mm OD, and 36mm width.
- AC: Angular Contact design.
- D: Signifies a specific internal design and light preload (Class B).
- HCP4A: Denotes the P4A tolerance class (higher than ABEC 7/ISO P4) and the use of Hybrid Ceramic components (ceramic balls with steel rings).
- DGB: Indicates a Universal Matchable (SU) bearing supplied in a pre-loaded duplex pair (DB arrangement).
7011 ACD/HCP4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and duplex pair (DB) arrangement provide high axial and radial rigidity, enabling the bearing to withstand substantial combined loads.
- Superior High-Speed Performance: The combination of hybrid ceramic balls (lower density, reduced centrifugal force) and a lightweight, robust phenolic resin cage allows for a very high limiting speed of 34,000 rpm, with excellent dimensional stability at elevated temperatures.
- Precision and Longevity: Manufactured to a P4A super-precision tolerance with a light preload, this bearing ensures minimal runout and smooth, precise rotation. The open seal type is optimized for use in clean, controlled environments with forced lubrication, maximizing performance and service life.
- Temperature Performance: The specified materials and design enable reliable operation within a temperature range of -30°C to 110°C.
7011 ACD/HCP4ADGB Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment 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: Especially those found in the aerospace and semiconductor manufacturing sectors.
- Medical Equipment: Dental handpieces and advanced imaging device rotors.
- Test and Measurement Equipment: Requiring ultra-precise rotational accuracy.
