7006 ACD/P4AQBCC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7006 ACD/P4AQBCC
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 Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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/P4AQBCC Bearing Product Overview & Core Advantages
The 7006 ACD/P4AQBCC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rigidity and accuracy. This metric system bearing is supplied as a Quadruplex Back-to-Back (QBC) matched set, providing superior stability and the ability to handle significant combined loads (radial and axial). With a P4A tolerance class and a moderate preload (Class C), it is engineered for high-precision, high-rigidity applications such as machine tool spindles, ensuring reliable performance under complex loading conditions.
7006 ACD/P4AQBCC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | 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 superior rotational accuracy. |
| QBCC | Specifies a Quadruplex Back-to-Back (QBC) matched set with a moderate preload (Class C) applied. This arrangement is optimized for maximum rigidity. |
7006 ACD/P4AQBCC Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement of four bearings creates an extremely stiff bearing system, capable of supporting heavy combined loads and resisting moment loads effectively.
- Precision Performance: Manufactured to a P4A tolerance class with tight dimensional control (bore and OD tolerance: -0.004mm to 0), this bearing guarantees high running accuracy and minimal vibration.
- Optimized for High-Speed Operation: The phenolic cage is lightweight and robust, contributing to smooth operation at the high limiting speed of 53,000 rpm. The 25° contact angle provides an excellent balance between radial and axial load capacity.
- Durable Construction: Components made from chrome steel offer high hardness and wear resistance, ensuring long service life under demanding conditions.
7006 ACD/P4AQBCC Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Machines
- High-Frequency Machining Centers
- Other precision rotary equipment requiring the ultimate in stiffness and accuracy.
