7026 ACD/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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7026 ACD/P4AQBCA Bearing Product Overview & Core Advantages
The 7026 ACD/P4AQBCA is a precision quadruplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This P4A tolerance class bearing is pre-configured in a Back-to-Back (QBC) matched arrangement, enabling it to withstand combined radial and axial loads from both directions simultaneously. Its extra light preload (Class A) ensures minimal deflection and smooth, quiet operation, making it ideal for high-speed, high-precision machinery where high rigidity and operational stability are paramount.
7026 ACD/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7026 | Basic bearing series, indicating a 130 mm bore, 200 mm outside diameter. |
| ACD | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| P4A | Indicates a high-precision tolerance class with enhanced dimensional and running accuracy. |
| QBC | Signifies a Quadruplex Back-to-Back matched set of four bearings, providing maximum moment stiffness. |
7026 ACD/P4AQBCA Bearing Structural Features & Performance Benefits
- Superior Rigidity & Load Capacity: The quadruplex back-to-back arrangement creates a highly rigid support system, capable of handling significant combined loads and moments. With a radial dynamic load rating of 83,475 lbf and a static load rating of 135,000 lbf, it ensures reliable performance under demanding conditions.
- Optimized High-Speed Performance: The phenolic cage offers low weight and excellent sliding properties, contributing to stable operation at the specified limiting speed of 11,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing guarantees precise shaft positioning and minimal runout.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring a long operational life in precision applications.
7026 ACD/P4AQBCA Bearing Typical Application Areas
This high-precision, high-rigidity bearing is engineered for critical applications in:
- Machine Tool Spindles (e.g., high-speed milling, grinding spindles)
- Precision Gearboxes and Robotic Drives
- High-Frequency Motors and Spindle Drives
- Aerospace Actuation Systems
- Medical and Laboratory Precision Equipment
