7005 CD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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7005 CD/P4ADBD Bearing Product Overview & Core Advantages
The 7005 CD/P4ADBD is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) matched set delivers superior performance under combined loads, handling significant radial and axial forces simultaneously. Manufactured to P4A tolerance class with a heavy preload (Class D), it ensures minimal runout and outstanding rotational precision. Its compact design and high rigidity make it ideal for high-speed, high-precision spindles and machinery where positional accuracy is critical.
7005 CD/P4ADBD Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Basic bearing series, indicating a 25mm bore, 47mm OD, and 24mm width. |
| C | 15° contact angle, optimized for carrying combined loads. |
| D | Heavy preload (Class D) for maximum system rigidity and reduced deflection under load. |
| P4A | High-precision tolerance class exceeding ABEC 7 standards, ensuring extremely tight dimensional and running accuracy. |
| DB | Duplex Back-to-Back mounting arrangement. This configuration increases moment rigidity and is ideal for applications with overturning moments. |
7005 CD/P4ADBD Bearing Structural Features & Performance Benefits
Matched Duplex Design (DB): The two bearings are universally matched and mounted in a back-to-back configuration. This creates a wide effective spread, significantly enhancing the bearing set's moment stiffness and resistance to tilting moments, which is crucial for machine tool spindles.
High Rigidity & Load Capacity: The combination of a 15° contact angle and heavy preload provides exceptional axial and radial rigidity. With a dynamic load rating of 3510 lbf and static load rating of 2340 lbf, it reliably sustains combined loads in high-performance operations.
Precision & High-Speed Capability: Manufactured to P4A tolerances with a phenolic cage, this bearing ensures smooth operation and low vibration. The cage material and optimized internal geometry contribute to a high limiting speed of 103,000 rpm, making it a true high-speed bearing.
Premium Material Construction: Both rings and balls are made from high-grade chrome steel, providing excellent wear resistance and long service life under demanding conditions.
7005 CD/P4ADBD Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision and rigidity are paramount.
- Precision Rotary Tables: Indexing and positioning systems requiring high axial and moment stiffness.
- High-Frequency Motors & Spindles: Applications demanding minimal runout at very high rotational speeds.
- Industrial Robotics: Arm joints and rotary actuators that require precise motion control and high load capacity.
- Medical & Dental Equipment: High-speed handpieces and diagnostic scanners.
