S7019 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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S7019 CDGA/HCP4A Bearing Product Overview & Core Advantages
The S7019 CDGA/HCP4A is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a single bearing with a 15° contact angle and P4A tolerance class, it delivers exceptional rotational accuracy and dimensional stability. Its core advantages include the ability to accommodate combined radial and axial loads, facilitated by its universal matching (SU) designation, allowing for optimized preload in multi-bearing arrangements. The use of ceramic balls and a phenolic cage significantly enhances its high-speed performance and reduces operational friction and heat generation.
S7019 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7019 | Precision bearing series with 95 mm bore, 145 mm OD. |
| CD | Contact angle of 15°. |
| GA | Preload level: Extra Light (Class A). |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls. |
| P4A | Tolerance class superior to ABEC 7, ensuring extremely tight dimensional and running accuracy. |
S7019 CDGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance with a universal match (SU) design, this bearing provides superior system rigidity and running accuracy when mounted in pairs or sets, making it ideal for precise spindles.
- Enhanced 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 15,000 rpm, minimizing friction and heat buildup.
- Superior Load Capacity: The 15° contact angle is optimized to handle significant combined radial and axial loads, with a dynamic load rating of 18,428 lbf and a static load rating of 18,000 lbf.
- Sealed and Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is maintenance-free within its specified temperature range of -30°C to 110°C.
S7019 CDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Robotics (Articulated arm joints, high-accuracy actuators)
- Aerospace & Defense Systems (Gyroscopes, radar systems, flight control mechanisms)
- High-Frequency Motors and Spindles
