S7017 CD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7017 CD/P4ADGB Bearing Product Overview & Core Advantages
The S7017 CD/P4ADGB is a super-precision double row angular contact ball bearing engineered for applications demanding the highest levels of accuracy, rigidity, and speed. Its P4A tolerance class ensures exceptional dimensional and running accuracy, making it ideal for high-performance spindles. The bearing is designed to accommodate combined loads (radial and axial loads simultaneously) and is universally matchable (SU), allowing for flexible mounting arrangements in pairs to handle bidirectional axial loads. Pre-loaded for high rigidity and featuring a sealed design with grease lubrication, it offers a reliable, long-service-life solution for critical machinery.
S7017 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| S7017 | Super-precision angular contact bearing series with 85mm bore, 130mm OD. | Denotes the base bearing dimensions and high-precision series. |
| CD | 15° contact angle and specific internal design. | Optimized for high-speed operation and axial load capacity. |
| P4A | Tolerance class superior to ABEC 7/ISO P4. | Guarantees ultra-precision running accuracy and low vibration. |
| DGB | Universal Matchable (SU) bearing pair, pre-loaded (Light / Class B). | Enables simplified mounting in pairs (DB, DF, DT) to handle bidirectional thrust loads with high rigidity. |
| Sealed / Grease | Integrally sealed and pre-lubricated with grease. | Provides contamination protection and is maintenance-free for the life of the bearing in many applications. |
S7017 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row ball complement and light preload provide exceptional system stiffness, minimizing deflection under combined loads. With a dynamic load rating of 24,975 lbf and a static load rating of 29,025 lbf, it is built for demanding applications.
- Super-Precision High-Speed Performance: The phenolic cage is lightweight and robust, contributing to low centrifugal forces and smooth operation at the high limiting speed of 28,000 rpm. The 15° contact angle is optimized for high-speed stability.
- Maintenance-Free Operation: The integral seals effectively retain grease and exclude contaminants. Combined with the wide temperature range (-30°C to 110°C) of the pre-filled grease, this ensures long-term, reliable performance without re-lubrication.
- Universal Matchability: As a Universal Matchable (SU) bearing, any two S7017 CD/P4ADGB bearings can be mounted together in any configuration (back-to-back, face-to-face, or tandem) without selective matching, simplifying inventory and assembly.
S7017 CD/P4ADGB Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where accuracy, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Robotics: High-accuracy joints and rotary actuators.
