S7011 CD/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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S7011 CD/HCP4ADBB Bearing Product Overview & Core Advantages
The S7011 CD/HCP4ADBB is a precision duplex pair of double row angular contact ball bearings, designed for applications demanding exceptional rigidity and running accuracy. This sealed bearing is pre-configured in a Back-to-Back (DB) arrangement, providing superior stability and the ability to withstand combined loads, including significant radial and bidirectional axial loads. With a P4A super-precision tolerance class and ceramic balls, it is engineered for high-speed operation and long service life in critical machinery.
S7011 CD/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7011 | Basic bearing series and size designation (55mm bore, 90mm OD, 36mm width). |
| C | 15° Contact Angle. |
| D | The bearing is part of a Duplex pair. |
| HC | Indicates the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Super Precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | The pair is supplied in a Back-to-Back (DB) matched arrangement. |
| B | Specifies a Light Preload (Class B). |
S7011 CD/HCP4ADBB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design and back-to-back duplex arrangement create a rigid support system that effectively resists overturning moments and handles high combined loads.
Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a high limiting speed of 34,000 rpm. This makes it an ideal high-speed bearing.
Enhanced Precision & Longevity: The P4A tolerance class ensures minimal runout and vibration for superior rotational accuracy. The integral seals retain grease and protect against contamination, contributing to a long, maintenance-free service life.
Optimized for Demanding Conditions: The standard grease lubrication and wide temperature range (-30°C to 110°C) ensure reliable performance in various operational environments.
S7011 CD/HCP4ADBB Bearing Typical Application Areas
The S7011 CD/HCP4ADBB is specified for high-performance applications where precision, speed, and rigidity are paramount. Key industries and machinery include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Robotics: In robotic arm joints and gears requiring high positional accuracy.
- High-Frequency Motors & Spindles: Used in electric motors and motorized spindles for PCB drilling and other high-RPM processes.
- Medical & Dental Equipment: In high-speed handpieces and imaging scanner gantries.
- Aerospace & Defense Systems: For gyroscopes, radar systems, and other critical rotating assemblies.
