7026 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7026 ACD/P4ADBA
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
Extra light / Class A
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
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7026 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7026 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This matched back-to-back (DB) arrangement is preloaded to Extra Light (Class A) specifications, providing superior rotational accuracy and stiffness. Its primary advantage lies in its ability to handle combined radial and axial loads simultaneously, making it an ideal choice for high-precision, high-rigidity systems where minimal deflection is critical.
7026 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACD | Angular Contact, Duplex (Matched Set) | Indicates a pre-matched pair of angular contact bearings supplied as a set. |
| P4A | High Precision Tolerance Class | Denotes extremely tight dimensional and running accuracy, superior to ABEC-7 (P4). |
| DB | Back-to-Back Arrangement | The two bearings are mounted back-to-back, providing high moment rigidity and excellent stability under complex loads. |
7026 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread between load centers, significantly increasing the bearing's resistance to moment loads and providing exceptional system stiffness.
- Superior Load Capacity: With a 25° contact angle and robust construction, this bearing is engineered to handle significant combined radial and axial loads efficiently.
- Precision Performance: Manufactured to P4A tolerance class with an Extra Light preload, it ensures minimal runout, smooth operation, and precise shaft positioning, which is critical for high-speed applications.
- High-Speed Capability: The lightweight and durable phenolic resin cage minimizes centrifugal forces and friction, contributing to a high limiting speed of 11,000 rpm. The bearings are pre-lubricated for immediate operation.
- Durable Construction: Components made from high-grade chrome steel ensure long service life and reliable performance under demanding conditions.
7026 ACD/P4ADBA Bearing Typical Application Areas
This precision duplex bearing is ideally suited for high-performance machinery requiring maximum rigidity and accuracy, including:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Frequency Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- High-Speed Robotic Arms and Precision Positioning Systems
