7026 ACD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7026 ACD/P4ADBB
Basic Information
System of measurement
Metric
Weight
6.47 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
66 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
51525 lbf
Radial static load rating
67500 lbf
Limiting speed
11 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7026 ACD/P4ADBB Bearing Product Overview & Core Advantages
The 7026 ACD/P4ADBB is a precision duplex angular contact ball bearing designed for applications requiring exceptional rigidity and accuracy. This matched back-to-back arrangement is engineered to handle combined loads—significant radial and bidirectional axial loads simultaneously. Manufactured to P4A tolerance class, it offers superior running accuracy and dimensional stability. Its preloaded DB configuration ensures high system stiffness, making it ideal for high-precision, high-reliability machinery where minimal deflection is critical.
7026 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle for optimal axial load capacity. |
| P4A | Indicates a high-precision tolerance class, providing extremely tight dimensional and running accuracy. |
| DBB | Denotes a Duplex Back-to-Back matched set. This arrangement provides high moment rigidity and is preloaded for immediate operational stability. |
7026 ACD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & System Stiffness: The duplex back-to-back (DB) configuration of two bearings creates a wide effective spread, significantly increasing the system's resistance to moment loads and operational deflection.
- Superior Load Capacity: The 25° contact angle and robust construction enable the bearing to support high combined radial and axial loads in both directions.
- Precision Performance: Manufactured to P4A tolerance class with a light preload (Class B), this bearing ensures smooth, quiet operation with minimal runout, essential for high-speed applications.
- Optimized High-Speed Capability: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction, reduced heat generation, and a high limiting speed of 11,000 rpm.
- Durable Construction: Components made from chrome steel provide high hardness and wear resistance, ensuring long service life under demanding conditions.
7026 ACD/P4ADBB Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- Precision Gearboxes and High-Speed Drives
- Industrial Pumps and Compressors
- Robotic Arm Joints and Rotary Tables
