S71906 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S71906 CB/HCP4A Bearing Product Overview & Core Advantages
The S71906 CB/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This sealed, single-row bearing is designed to accommodate high combined loads (radial and axial) simultaneously. Its defining characteristics include a P4 (ABEC-7) tolerance class for superior running accuracy, a 15° contact angle optimized for high-speed operation, and a phenolic resin cage that contributes to low friction and high rotational speeds. Preloaded and pre-lubricated, this bearing offers high rigidity and is ready for immediate installation, making it an ideal choice for high-reliability, precision machinery.
S71906 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| 719 | Indicates a high-precision angular contact ball bearing series. |
| 06 | Specifies the bore diameter code (06 corresponds to a 30 mm bore). |
| C | Designates a 15° contact angle. |
| B | Indicates that the bearing is supplied with a preload. |
| HC | Signifies the use of Hybrid Ceramic balls (Ceramic balls with steel rings). |
| P4A | Denotes an ABEC-7 / ISO P4 tolerance class, representing a very high level of precision. |
S71906 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and operating temperature, extends service life, and allows for higher limiting speeds compared to all-steel bearings. This also provides inherent electrical insulation.
- High Rigidity & Preload: The bearing is supplied with a preload, which eliminates internal clearance. This results in high system rigidity, precise shaft positioning, and reduced noise and vibration during operation.
- Superior High-Speed Performance: The lightweight phenolic resin cage is ideal for high-speed applications, offering excellent dimensional stability and low centrifugal forces. Combined with the ceramic balls, it enables the bearing to achieve a limiting speed of 48,000 rpm.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant combined radial and axial loads efficiently, making it suitable for complex load conditions.
- Sealed & Lubricated for Longevity: The integral seals protect against contamination and retain lubricant. Pre-lubricated from the factory, the bearing offers maintenance-free operation within its specified temperature range of -30°C to 110°C.
S71906 CB/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for applications where speed, accuracy, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Medical and Dental Handpieces
- Aerospace Instrumentation and Gyroscopes
- Semiconductor Manufacturing Equipment
