7006 ACD/P4AQBTB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7006 ACD/P4AQBTB
Basic Information
System of measurement
Metric
Weight
0.45 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
52 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
8190 lbf
Radial static load rating
6862 lbf
Limiting speed
53 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Tandem Back-to-Back (QBT)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Light / Class B
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/P4AQBTB Bearing Product Overview & Core Advantages
The 7006 ACD/P4AQBTB is a precision angular contact ball bearing configured as a Quadruplex Tandem Back-to-Back (QBT) matched set. This specialized arrangement delivers exceptional high rigidity and is engineered to handle significant combined loads, including heavy thrust loads in both directions. Manufactured to P4A tolerance class, it offers superior running accuracy, making it ideal for applications demanding high-speed operation and extreme positional stability. The set is pre-lubricated and features an open design for controlled lubrication management in sophisticated systems.
7006 ACD/P4AQBTB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | Indicates a high-precision tolerance class exceeding ABEC 7, ensuring minimal runout and vibration. |
| QBTB | Denotes a Quadruplex (4 bearings) Tandem Back-to-Back matched arrangement. This configuration provides maximum axial rigidity and load capacity. |
7006 ACD/P4AQBTB Bearing Structural Features & Performance Benefits
- Superior Rigidity and Load Capacity: The Quadruplex Tandem Back-to-Back (QBT) arrangement creates an extremely stiff bearing system capable of supporting high combined radial and axial loads from both directions. The 25° contact angle is optimized for thrust load carrying capacity.
- High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, enabling stable operation at the high limiting speed of 53,000 rpm. The precision P4A grading minimizes vibration and heat generation.
- Precision Performance: Manufactured to P4A tolerance class with tight bore and OD tolerances, this bearing ensures exceptional running accuracy, low noise, and minimal non-repetitive runout for critical applications.
- Optimized Internal Geometry: The design, featuring 14 precision balls, ensures smooth rotation and efficient load distribution, contributing to long service life and reliability.
7006 ACD/P4AQBTB Bearing Typical Application Areas
This bearing is specifically designed for the most demanding high-precision and high-speed machinery, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers where rigidity and accuracy are paramount.
- Precision Spindles: In PCB drilling, semiconductor manufacturing, and other precision machining equipment.
- High-Frequency Motors: Where minimal vibration and high rotational accuracy are required.
- Advanced Robotic Systems: Particularly in high-accuracy rotary joints and arm actuators.
