7026 CD/P4AQBCD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7026 CD/P4AQBCD
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
15 °
Ball & Washer Dimensions
Ball diameter
22.225 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
89325 lbf
Radial static load rating
139500 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
Heavy / Class D
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 CD/P4AQBCD Bearing Product Overview & Core Advantages
The 7026 CD/P4AQBCD is a precision quadruplex matched bearing set designed for the most demanding industrial applications. This metric angular contact ball bearing configuration provides exceptional system rigidity and load-carrying capacity. Its primary advantage lies in the Quadruplex Back-to-Back (QBC) arrangement, which delivers superior stability and resistance to complex combined loads, including heavy radial and moment loads. Manufactured to an ultra-precise P4A tolerance class and featuring a Heavy preload (Class D), this bearing set is engineered for high-precision, high-stiffness applications where minimal deflection is critical.
7026 CD/P4AQBCD Bearing Model Code Explained, Specifications & Naming Convention
The model number 7026 CD/P4AQBCD provides a complete technical specification:
- 7026: Basic bearing series, indicating a 130mm bore, 200mm OD.
- C: Denotes a 15° contact angle, optimized for combined loads.
- D: Indicates a Heavy preload (Class D) for maximum rigidity.
- P4A: Specifies an ultra-high precision tolerance class exceeding ABEC 7/ISO P4.
- QBC: Defines the Quadruplex Back-to-Back matched arrangement of four bearings.
- D: Confirms the set is supplied lubricated and ready for installation.
7026 CD/P4AQBCD Bearing Structural Features & Performance Benefits
- Unmatched Rigidity & Stability: The Quadruplex Back-to-Back (QBC) arrangement creates an extremely rigid bearing system, effectively resisting complex moment loads and minimizing shaft deflection under heavy operating conditions.
- High Load Capacity: With a dynamic load rating of 89,325 lbf and a static load rating of 139,500 lbf, this set is built to handle significant combined radial and axial loads.
- Precision Performance: The P4A tolerance class ensures extremely tight dimensional and running accuracy, critical for applications requiring high rotational precision and smooth operation.
- Optimized for Demanding Speeds: The phenolic cage and optimized internal geometry contribute to a high limiting speed of 11,000 rpm, suitable for high-speed spindles.
- Robust Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability and a long service life under heavy preload conditions.
7026 CD/P4AQBCD Bearing Typical Application Areas
This high-performance bearing set is ideally suited for:
- High-Precision Machine Tool Spindles
- High-Rigidity Grinding Machine Spindles
- Industrial High-Speed Pumps and Compressors
- Precision Gearboxes requiring minimal shaft deflection
- Advanced Robotics and automation equipment
