S7020 CD/P4ADBC
Sealed Super Precision Angular Contact Ball Bearings
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S7020 CD/P4ADBC Bearing Product Overview & Core Advantages
The S7020 CD/P4ADBC is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This metric system bearing features a back-to-back (DB) matched arrangement and a P4A tolerance class, making it ideal for high-speed spindles and other precision machinery. Its core advantage lies in its ability to handle combined radial and axial loads simultaneously with high stability, thanks to its duplex configuration and 15° contact angle. The phenolic cage and preloaded design contribute to smooth operation and high positional accuracy.
S7020 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7020 | Basic bearing designation (100mm bore, 150mm OD, 48mm width) |
| C | 15° contact angle |
| D | Duplex / Matched set bearing |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DB | Back-to-back mounting arrangement |
| C | Moderate preload (Class C) |
S7020 CD/P4ADBC Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The duplex back-to-back (DB) arrangement provides exceptional moment stiffness and operational stability, effectively resisting tilting moments. The moderate preload (Class C) ensures minimal axial and radial play, enhancing system rigidity.
Superior Load Capacity: Engineered to withstand significant combined radial and axial loads. The 15° contact angle optimizes axial load carrying capability while maintaining excellent radial load performance.
Precision & High-Speed Performance: Manufactured to P4A tolerance class standards for exceptional running accuracy. The phenolic resin cage offers excellent strength-to-weight ratio, contributing to lower centrifugal forces and enabling operation at limiting speeds up to 10,000 rpm.
Sealed & Lubricated Design: As a sealed bearing with factory-applied grease lubrication, it provides reliable protection against contamination and offers maintenance-free operation within the specified temperature range of -30°C to 110°C.
S7020 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers
- High-Speed Machining Centers: Where rotational accuracy and rigidity are critical
- Precision Gearboxes: Industrial transmission systems requiring high positional accuracy
- Robotic Arm Joints: Applications demanding high moment stiffness and precision
- Medical Equipment: High-speed dental handpieces and surgical tools
- Aerospace Actuators: Control surface mechanisms and flight control systems
