7005 ACDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7005 ACDGB/P4A
Basic Information
System of measurement
Metric
Weight
0.079 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2077 lbf
Radial static load rating
1125 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
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
Price:
$ 64.59
/ each
In Stock
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7005 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7005 ACDGB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a single bearing with Universal Matchable (SU) designation, it can be precisely paired with other identical bearings to form a matched set, optimizing performance in preloaded arrangements. Its key characteristics include a 25° contact angle and a Light (Class B) preload, making it ideal for handling combined loads and providing high rigidity. Manufactured to the stringent P4A tolerance class, this bearing ensures superior running accuracy and is suitable for high-speed operation up to 85,000 rpm.
7005 ACDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Basic bearing series and size designation (25mm bore, 47mm OD, 12mm width). |
| AC | Angular Contact design, optimized for combined radial and axial loads. |
| DGB | Contact angle of 25° and a Light preload (Class B). |
| P4A | High precision tolerance class, exceeding ABEC-7 standards for superior running accuracy. |
7005 ACDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 25° contact angle enables the bearing to efficiently support significant combined radial and axial loads simultaneously. The specified light preload eliminates internal clearance, resulting in enhanced system stiffness and precise shaft positioning.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and ensures stable operation at the high limiting speed of 85,000 rpm. This makes it an excellent choice for demanding high-speed spindles.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, this bearing guarantees minimal runout and vibration, which is critical for high-precision applications.
- Universal Matchability (SU): This bearing is designed for universal matching, allowing multiple bearings to be mounted together in a set (up to 3 in this configuration) to share loads evenly and achieve the desired preload and stiffness without selective sorting.
- Material Quality: Constructed from chrome steel for both rings and balls, providing high hardness, wear resistance, and long service life under demanding conditions.
7005 ACDGB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning spindles requiring high precision and rigidity.
- Precision Instrumentation: Measuring devices, optical scanners, and coordinate measuring machines (CMM).
- High-Frequency Motors and Spindles: Electric spindles for PCB drilling and dental handpieces.
- Robotics: Precision joints and actuators in industrial robots.
