7011 CE/HCPA9ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 CE/HCPA9ADGA
Basic Information
System of measurement
Metric
Weight
0.72 kg
Tolerance class
PA9A
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
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6210 lbf
Radial static load rating
5512 lbf
Limiting speed
39 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
In Stock
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7011 CE/HCPA9ADGA Bearing Product Overview & Core Advantages
The 7011 CE/HCPA9ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-lubricated, matched set of two, it is engineered to accommodate combined loads—handling significant radial loads and axial loads in one direction simultaneously. Its extra light preload (Class A) and PA9A tolerance class ensure smooth, precise operation with minimal runout, making it ideal for high-speed spindles and other precision machinery where high rigidity and rotational accuracy are critical.
7011 CE/HCPA9ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7011 CE/HCPA9ADGA provides detailed technical specifications through its suffixes:
- 7011: Basic designation indicating a metric angular contact ball bearing with 55mm bore, 90mm OD, and 36mm width.
- C: Denotes a 15° contact angle, optimized for high-speed operation and combined radial and axial load capacity.
- E: Indicates optimized internal design for enhanced performance and load rating.
- HCPA9A: Specifies the tolerance class (PA9A) and preload level (Extra light / Class A), ensuring ultra-precise dimensions and controlled internal clearance for high-accuracy applications.
- DGA: Indicates the bearing is supplied as a Universal Matchable (SU) set (two bearings) with specific mounting arrangements for optimal performance.
7011 CE/HCPA9ADGA Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a phenolic resin cage, ceramic balls, and a 15° contact angle enables extremely high limiting speeds (up to 39,000 rpm), reducing centrifugal forces and heat generation.
- Exceptional Rigidity & Accuracy: Manufactured to PA9A tolerance class with an extra light preload, this bearing provides superior running accuracy and system stiffness, minimizing deflection under load.
- Advanced Material Composition: Ceramic balls (Si3N4) offer lower density, reduced friction, and electrical insulation compared to steel, while the phenolic cage provides excellent strength-to-weight ratio at high speeds.
- Universal Matchable Design: As an SU-type bearing supplied in a matched pair, it simplifies installation and ensures optimal preload and performance when mounted in universal arrangements (DB, DF, DT).
- Pre-Lubricated & Ready-to-Use: Comes pre-lubricated for immediate operation within a temperature range of -30°C to 110°C.
7011 CE/HCPA9ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines requiring extreme accuracy and rigidity.
- Precision Robotics: Joint and arm actuators in industrial robots where high speed, stiffness, and reliability are essential.
- High-Speed Motors & Drives: Spindles for electric motors, turbochargers, and other high-RPM industrial drives.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring precision rotation and high dynamic performance.
- Medical Equipment: Dental handpieces, centrifuge rotors, and imaging device scanners.
