7013 FE/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7013 FE/P4ADBA Bearing Product Overview & Core Advantages
The 7013 FE/P4ADBA is a precision duplex angular contact ball bearing set, designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Extra Light (Class A) specifications, providing superior system stiffness and minimizing axial and radial runout. Its core advantages include the ability to handle combined loads (radial and axial) simultaneously, outstanding operational precision due to its P4A tolerance class, and high-speed capability supported by a lightweight phenolic cage. This configuration is ideal for high-precision, high-reliability spindles and machinery.
Model Code Breakdown
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 7013 | Basic Bearing Series & Size | Denotes a metric, 65mm bore, 100mm OD, 36mm width angular contact bearing. |
| FE | Machined Phenolic Cage | Indicates a lightweight, high-strength cage suitable for high-speed applications and offering good sliding properties. |
| P4A | Tolerance Class | Signifies a precision grade with tolerances tighter than ABEC 7, ensuring extremely low runout and vibration for demanding spindle applications. |
| DB | Matched Arrangement | "Duplex Back-to-Back". This configuration provides high moment rigidity and can accommodate axial loads from both directions. |
| A | Preload Level | Specifies "Extra Light" preload, which optimizes the bearing for high speeds while maintaining sufficient stiffness. |
7013 FE/P4ADBA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The back-to-back duplex design creates a wide effective spread between load centers, significantly increasing the system's resistance to moment loads and providing high rigidity. The 18° contact angle is optimized to handle substantial combined radial and axial loads.
High-Speed Performance: The standard open design allows for efficient lubrication management, while the lightweight phenolic cage (FE) reduces centrifugal forces, enabling a high limiting speed of 32,500 rpm. This makes it an excellent high-speed bearing solution.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing ensures minimal runout and superior rotational accuracy, which is critical for precision machining and metrology.
Material & Lubrication: Constructed from chrome steel for both rings and balls, ensuring high durability and fatigue life. The bearing is supplied lubricated, ready for initial operation within its specified temperature range.
7013 FE/P4ADBA Bearing Typical Application Areas
The 7013 FE/P4ADBA is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: For PCB drilling, semiconductor manufacturing, and fine finishing.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
