7017 ACE/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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7017 ACE/HCP4ADBB Bearing Product Overview & Core Advantages
The 7017 ACE/HCP4ADBB is a high-precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement enables the bearing to handle combined radial and axial loads from both directions simultaneously. Manufactured to P4A tolerance class and featuring a light preload (Class B), it delivers superior running accuracy, high stiffness, and stable rotational performance, making it ideal for high-speed spindles and precision machinery.
7017 ACE/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7017 | Basic bearing series and size designation (85mm bore, 130mm OD). |
| ACE | Specific internal design and contact angle (25°). |
| HC | High-Capacity internal geometry. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | Duplex Back-to-Back mounting arrangement for high moment stiffness. |
7017 ACE/HCP4ADBB Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex back-to-back (DB) configuration creates a wide effective spread, significantly increasing the bearing's resistance to moment loads and providing high rigidity for precise shaft positioning.
Superior High-Speed Performance: The combination of a lightweight phenolic cage and ceramic balls (Si3N4) reduces centrifugal forces and inertial mass, enabling stable operation at the high limiting speed of 17,000 rpm. The 25° contact angle is optimized for high-speed applications with significant axial loads.
Precision and Longevity: Manufactured to P4A precision tolerances with a light preload, this bearing ensures minimal runout and vibration. The use of ceramic balls provides enhanced durability, reduced heat generation, and longer service life compared to all-steel designs.
7017 ACE/HCP4ADBB Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and high-speed electric motors.
- Medical Equipment: High-speed dental handpieces and imaging devices.
