S7011 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7011 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.4 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
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
6.747 mm
Ball quantity
26
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
3150 lbf
Radial static load rating
2475 lbf
Limiting speed
26 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:
$ 433.99
/ each
In Stock
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S7011 CB/HCP4A Bearing Product Overview & Core Advantages
The S7011 CB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional speed, rigidity, and accuracy. As a single-row bearing, it is optimized to support high combined loads, handling significant radial loads and axial loads in one direction simultaneously. Its P4 (ABEC-7) tolerance class ensures superior running accuracy, while the ceramic ball construction contributes to lower friction, higher limiting speeds, and extended service life. This bearing is preloaded and pre-lubricated, making it a ready-to-install solution for high-speed spindles and other precision machinery.
S7011 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| CB | Specific internal clearance and preload | Optimized for high rigidity and precise rotational performance. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Enables higher speeds, reduced heat generation, and longer life compared to all-steel designs. |
| P4 | Tolerance class equivalent to ABEC-7 | Guarantees ultra-precision and minimal runout for high-accuracy applications. |
S7011 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls with a chrome steel ring significantly reduces centrifugal forces, allowing for a limiting speed of 26,000 rpm. This construction also provides superior resistance to wear and operates effectively in marginal lubrication conditions.
- High Rigidity & Load Capacity: The 15° contact angle and preload are engineered to provide high system stiffness, effectively resisting deflection under combined radial and axial loads (Dynamic: 3150 lbf, Static: 2475 lbf).
- Precision Phenolic Cage: The lightweight and robust phenolic resin cage ensures stable ball guidance at high speeds, contributing to smooth operation and reduced vibration.
- Sealed & Lubricated for Life: As a sealed bearing with factory-applied lubrication, it is protected from contamination and is designed for long-term, maintenance-free operation within its specified temperature range.
S7011 CB/HCP4A Bearing Typical Application Areas
This bearing's combination of high speed, precision, and rigidity makes it ideal for:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Robotics (Arms and rotary joints)
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (High-speed handpieces)
- Aerospace Instrumentation
