7026 CD/P4ADBC
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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Product Overview and Core Advantages
The 7026 CD/P4ADBC is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This back-to-back (DB) matched arrangement provides superior stability when handling combined loads (radial and axial) from both directions. Manufactured to P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-precision, high-rigidity spindles and machinery. The pre-lubricated design and moderate preload (Class C) deliver immediate, reliable performance upon installation.
7026 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7026 | Basic bearing designation indicating a 130 mm bore, 200 mm OD. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| D | Indicates the bearing is part of a duplex pair. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy requirements. |
| DB | Specifies the Back-to-Back mounting arrangement, which provides high moment rigidity and excellent stability under complex loads. |
Structural Features and Performance Benefits
- High Rigidity and Stability: The duplex back-to-back (DB) configuration creates a wide, rigid support system that effectively resists moment loads and shaft deflection, crucial for maintaining precision in demanding applications.
- Superior Load Capacity: The angular contact design with a 15° contact angle allows the bearing to efficiently support significant combined radial and axial loads from both directions simultaneously.
- Optimized for Precision and Speed: The phenolic resin cage offers low weight and excellent performance at high speeds, contributing to the bearing's limiting speed of 11,000 rpm. The P4A precision grade ensures smooth, quiet, and vibration-free operation.
- Ready-to-Install Performance: The bearings are supplied pre-lubricated and with a moderate preload (Class C) applied, ensuring optimal performance and simplified installation without the need for initial adjustment.
7026 CD/P4ADBC Bearing Typical Application Areas
The 7026 CD/P4ADBC 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 Gearboxes: Industrial drives requiring high positional accuracy.
- High-Frequency Motors and Spindles: Applications in aerospace and semiconductor manufacturing equipment.
- Medical and Laboratory Equipment: Centrifuges and precision rotary tables.
