7006 ACD/P4ADGC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7006 ACD/P4ADGC
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
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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7006 ACD/P4ADGC Bearing Product Overview & Core Advantages
The 7006 ACD/P4ADGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a Universal Matchable (SU) bearing supplied in a pre-set pair, it is engineered to handle combined loads—significant radial and axial loads in one direction—simultaneously. Its P4A tolerance class ensures ultra-precision operation, making it ideal for high-speed spindles and other critical machinery where high rigidity and minimal runout are paramount.
7006 ACD/P4ADGC 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 | Signifies a Moderate Preload (Class C) for enhanced stiffness. |
| P4A | Indicates an ultra-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DGC | Specifies the bearing is Lubricated with a high-performance grease suitable for the specified temperature range. |
7006 ACD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and Moderate Preload (Class C) provide superior stiffness, enabling the bearing to withstand high combined loads with minimal deflection. The universal matching (SU) allows two bearings to be paired in a duplex set for even greater load-sharing capability and moment load resistance.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 53,000 rpm. The optimized internal geometry and 25° contact angle are balanced for rapid acceleration and stable operation.
- Precision Operation: Manufactured to P4A tolerance class with tight bearing dimensions and runout control, this bearing ensures exceptional accuracy and smooth rotation, which is critical for machining and measurement applications.
- Durability and Reliability: Constructed from chrome steel for both rings and balls, the bearing offers high fatigue life. The factory-applied lubrication ensures immediate readiness and reliable performance within the designated temperature range.
7006 ACD/P4ADGC Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and milling heads.
- High-Speed Motors and Drives: In robotics, electric spindles, and servo systems.
- Precision Instrumentation: Used in measuring devices, optical scanners, and coordinate measuring machines (CMM).
- Medical Equipment: For dental handpieces and high-speed laboratory centrifuges.
