S7011 ACB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7011 ACB/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.8 kg
Tolerance class
P4A
Seal type
Sealed
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
6.747 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4770 lbf
Radial static load rating
4680 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
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
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In Stock
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S7011 ACB/HCP4ADGA Bearing Product Overview & Core Advantages
The S7011 ACB/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and rigidity. This sealed double row angular contact ball bearing features a universal matchable (SU) design, allowing two bearings to be mounted in any combination to achieve the desired preload and stiffness. Its construction with ceramic balls and a phenolic cage enables superior high-speed performance and reduced rotational mass. This bearing is designed to accommodate combined loads (radial and axial) simultaneously, making it an ideal solution for high-reliability, high-precision machinery.
S7011 ACB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number S7011 ACB/HCP4ADGA provides detailed technical specifications through its suffixes:
- S7011: Basic model number indicating a double row angular contact ball bearing with a 55mm bore diameter.
- ACB: Signifies Angular Contact Bearing with a 25° contact angle.
- HCP4A: Denotes the tolerance class P4A, indicating very high dimensional and running accuracy.
- DGA: Specifies the universal matchable (SU) arrangement and extra light preload (Class A).
S7011 ACB/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and 25° contact angle provide high radial and axial rigidity, enabling the bearing to handle significant combined loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage allows for a high limiting speed of 34,000 rpm.
- Exceptional Precision: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for precision applications.
- Long Service Life & Reliability: The sealed design retains factory-applied grease lubrication and protects against contamination, ensuring consistent performance and reduced maintenance over a wide temperature range (-30°C to 110°C).
S7011 ACB/HCP4ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators requiring high positional accuracy.
- High-Frequency Motors and Spindles: Motors for CNC machinery and PCB drilling.
- Medical Equipment: High-speed centrifuges and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
