7013 CD/P4ADBAGMM1
7000 Series Super Precision Angular Contact Ball Bearings
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7013 CD/P4ADBAGMM1 Bearing Product Overview & Core Advantages
The 7013 CD/P4ADBAGMM1 is a precision duplex pair of Angular Contact Ball Bearings in a Back-to-Back (DB) arrangement, pre-loaded to Extra light (Class A) specifications. This configuration is engineered for applications demanding extremely high running accuracy and rigidity. Manufactured to the stringent P4A tolerance class, this matched set excels in handling combined radial and axial loads simultaneously, making it an ideal solution for high-precision, high-speed spindles and machinery.
7013 CD/P4ADBAGMM1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series, defining the standard boundary dimensions: 65mm bore, 100mm OD, 36mm width. |
| C | Designates a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearings are supplied as a Duplex pair. |
| P4A | Specifies the high precision tolerance class, exceeding ABEC 7/ISO P4 standards, ensuring minimal runout and vibration. |
| DB | Defines the Back-to-Back mounting arrangement, which provides high moment rigidity and stability under complex loads. |
| A | Specifies the Extra light preload level, minimizing friction and heat generation for optimal high-speed performance. |
| GMM1 | Indicates the internal radial clearance group and other specific manufacturing specifications for the matched set. |
7013 CD/P4ADBAGMM1 Bearing Structural Features & Performance Benefits
High Rigidity & Stability: The Back-to-Back (DB) duplex arrangement creates a wide, stable support system that significantly increases moment load capacity and shaft rigidity, preventing misalignment under operational stresses.
Superior Precision: Conforming to the P4A tolerance class, this bearing set guarantees exceptional dimensional and running accuracy, which is critical for applications requiring minimal vibration and high positional repeatability.
Optimized High-Speed Performance: The combination of a 15° contact angle, light preload, and a phenolic resin cage reduces centrifugal forces and friction, enabling a high limiting speed of 24,000 rpm. The open design allows for efficient lubrication management.
High Load Capacity: Utilizing chrome steel for both rings and balls, and featuring a generous ball complement (20 balls of 11.112mm diameter), this bearing delivers high dynamic and static load ratings (15,210 lbf / 16,875 lbf) for its compact bearing dimensions.
7013 CD/P4ADBAGMM1 Bearing Typical Application Areas
The 7013 CD/P4ADBAGMM1 is designed 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: PCB drilling, high-frequency motor spindles.
- Robotics: High-accuracy rotary joints and arms.
- Medical Equipment: Dental handpieces, laboratory centrifuges.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
