7026 ACD/P4AQBCC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7026 ACD/P4AQBCC
Basic Information
System of measurement
Metric
Weight
12.9 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
130 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
200 mm
Outside diameter tolerance
-0.004mm to 0
Width
132 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
22.225 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
83475 lbf
Radial static load rating
135000 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
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7026 ACD/P4AQBCC Bearing Product Overview & Core Advantages
The 7026 ACD/P4AQBCC is a precision quadruplex angular contact ball bearing designed for the most demanding applications requiring exceptional rigidity and accuracy. This P4A tolerance class bearing is pre-configured in a back-to-back quadruplex (QBC) arrangement, delivering superior stiffness and the ability to handle significant combined loads (radial and axial) from multiple directions. Its moderate preload (Class C) ensures consistent performance, minimal runout, and is ideal for high-precision, high-reliability machinery where positioning accuracy is critical.
7026 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates an ultra-high precision tolerance class, exceeding standard P4 levels for enhanced running accuracy. |
| QBCC | Specifies a Quadruplex Back-to-Back (QBC) matched set with a Moderate (Class C) preload applied. |
7026 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
- Unmatched Rigidity: The quadruplex back-to-back arrangement creates an extremely rigid bearing system, effectively resisting complex moment loads and preventing shaft deflection under heavy operating conditions.
- High Load Capacity: Engineered to support substantial combined radial and axial loads. The 25° contact angle is optimized for high axial load capacity while maintaining excellent radial performance.
- Precision & Stability: Manufactured to P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), ensuring smooth, quiet operation with minimal vibration. The phenolic cage contributes to smooth high-speed operation and reduced friction.
- Optimized for Performance: The combination of chrome steel rings and balls provides high durability and fatigue life. The bearing is pre-lubricated for immediate operation and is suitable for a temperature range of -30°C to 110°C.
7026 ACD/P4AQBCC Bearing Typical Application Areas
This bearing is specifically engineered for high-end industrial applications where precision, rigidity, and reliability are non-negotiable. Key sectors include:
- High-Precision Machine Tool Spindles (e.g., grinding, milling, and turning centers)
- High-Rigidity Industrial Robots and automated handling systems
- Precision Gearboxes and transmission systems
- Advanced Medical Imaging Equipment (e.g., CT scanner gantries)
- Aerospace Actuation Systems and test equipment
