7017 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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7017 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7017 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) arrangement provides superior stability and is optimized to handle combined loads—significant radial loads and bidirectional axial loads simultaneously. Manufactured to P4A tolerance class and featuring a moderate preload (Class C), this bearing delivers high running accuracy, excellent high-speed capability, and reliable performance in demanding industrial environments. Its compact design and phenolic cage contribute to its high performance in precision machinery.
7017 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
- 7017: Basic bearing series, indicating a metric angular contact ball bearing with an 85mm bore, 130mm OD, and 44mm width.
- C: Represents a 15° contact angle, optimized for high-speed applications and moderate axial load capacity.
- D: Indicates the bearing is part of a duplex pair.
- P4A: Denotes a high precision tolerance class, ensuring extremely tight dimensional and running accuracy.
- DB: Specifies the back-to-back mounting arrangement, which provides high moment rigidity and increased stability under complex loads.
- C: Indicates a moderate preload (Class C), which enhances rigidity and minimizes axial and radial play.
7017 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing the bearing's resistance to moment loads and providing exceptional system rigidity.
- Superior Load Capacity: Engineered with a 15° contact angle and high-grade chrome steel components, this bearing efficiently handles combined radial and bidirectional axial loads.
- High-Speed Performance: The lightweight phenolic resin cage ensures smooth operation at high speeds, contributing to the bearing's impressive limiting speed of 28,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional tolerances on the bore, outside diameter, and width, guaranteeing consistent high-precision performance.
- Optimized Preload: The moderate preload (Class C) is applied at the factory, eliminating internal clearance and ensuring immediate high rigidity and accurate rotational characteristics upon installation.
7017 CD/P4ADBC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Industrial Pumps.
- High-Frequency Motors and Compressor Systems.
- Medical Equipment and Aerospace Actuation Systems.
- Robotic Arms and Rotary Tables.