7011 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.32 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.007mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.008mm to 0
Width
18 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° to 110 °C
Radial dynamic load rating
8932 lbf
Radial static load rating
7312 lbf
Limiting speed
28 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 361.38
/ each
In Stock
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Product Overview and Core Advantages
The 7011 CD/HCP4A is a single-row angular contact ball bearing designed for applications requiring high precision and superior performance. Engineered to accommodate combined loads with a 15° contact angle, this bearing delivers exceptional high-speed capabilities and rigidity. Its ceramic ball construction and P4 (ABEC-7) tolerance class ensure minimal vibration and extended service life in demanding environments. Preloaded and ready for installation, it offers reliable operation in precision machinery.
7011 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CD | 15° contact angle design optimized for high rigidity and precise operation |
| HC | Hybrid ceramic balls for reduced friction and enhanced high-speed performance |
| P4 | P4 tolerance class (ABEC-7) for ultra-precision applications |
| A | Preloaded configuration for immediate high-rigidity performance |
Structural Features and Performance Benefits
- Hybrid Ceramic Construction: Silicon nitride ceramic balls reduce centrifugal forces, lower operating temperatures, and enable higher limiting speeds (28,000 rpm) compared to all-steel equivalents
- Precision Ground Components: Chrome steel rings manufactured to P4 tolerance standards ensure minimal runout and vibration for superior rotational accuracy
- Optimized Cage Design: Phenolic resin cage provides excellent strength-to-weight ratio, reduced friction, and compatibility with high-speed applications
- Preload Configuration: Factory-set preload eliminates internal clearance, delivering immediate high rigidity and precise shaft positioning
- Enhanced Load Capacity: 15° contact angle design provides balanced performance for combined radial and axial loads with dynamic load rating of 8,932 lbf
7011 CD/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers and precision grinding equipment
- Medical Equipment: Dental handpieces and surgical drill systems requiring sterile operation
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
- High-Speed Motors: Servo motors, spindle motors, and high-frequency applications
