7006 ACD/P4ADBG52
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7006 ACD/P4ADBG52
Basic Information
System of measurement
Metric
Weight
0.22 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
26 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4972 lbf
Radial static load rating
3442 lbf
Limiting speed
53 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
Available
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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7006 ACD/P4ADBG52 Bearing Product Overview & Core Advantages
The 7006 ACD/P4ADBG52 is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This duplex back-to-back (DB) arrangement bearing set is preloaded and manufactured to P4A tolerance class, ensuring superior running accuracy and minimal vibration. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stability, making it ideal for high-precision, high-rigidity systems. The use of a phenolic cage contributes to its suitability for high-speed operation.
7006 ACD/P4ADBG52 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7006 | Basic bearing series and size designation (30mm bore, 55mm OD, 26mm width). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (Two bearings as a set). |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4 standards. |
| DB | Back-to-Back mounting arrangement. |
| G52 | Specific preload level applied to the matched set. |
7006 ACD/P4ADBG52 Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and shaft deflection, providing exceptional operational stability.
- Superior Load Capacity: The 25° contact angle is optimized to handle significant combined radial and axial loads simultaneously, a key feature of angular contact ball bearings.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 53,000 rpm. The bearing is pre-lubricated for immediate operation.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring high running accuracy and low noise levels.
- Preload: The set is supplied with a specific preload (G52), which eliminates internal clearance, increases stiffness, and enhances rotational accuracy from the moment of installation.
7006 ACD/P4ADBG52 Bearing Typical Application Areas
This precision bearing is ideally suited for applications where high rigidity, speed, and accuracy are paramount. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in robotics and aerospace applications.
- High-Frequency Spindles: Used in PCB drilling and engraving machines.
- Medical Equipment: Centrifuges and high-speed dental handpieces.
- Test and Measurement Apparatus: Where minimal runout and vibration are critical.
