S7005 ACD/P4AQBCA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7005 ACD/P4AQBCA
Basic Information
System of measurement
Metric
Weight
0.32 kg
Tolerance class
P4A
Seal type
Sealed
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
48 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
5445 lbf
Radial static load rating
4500 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Grease
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
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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S7005 ACD/P4AQBCA Bearing Product Overview & Core Advantages
The S7005 ACD/P4AQBCA is a precision quadruplex matched angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This P4A tolerance class bearing features a back-to-back (QBC) arrangement of four bearings, providing superior stability and the ability to withstand combined radial and axial loads. With its sealed design and phenolic cage, it is engineered for high-speed operation and reliable performance in precision machinery.
S7005 ACD/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Basic bearing series and size designation (25mm bore, 47mm OD). |
| ACD | Angular Contact Design with a 25° contact angle. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards. |
| QBC | Quadruplex Back-to-Back matched set arrangement. |
S7005 ACD/P4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system capable of supporting significant combined loads and moments. The 25° contact angle is optimized for handling substantial axial loads in both directions.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 100,500 rpm. This makes it an ideal high-speed bearing for demanding applications.
- Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and superior rotational accuracy.
- Sealed & Pre-Lubricated: The sealed design and factory-applied grease lubrication protect against contamination and provide long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
S7005 ACD/P4AQBCA Bearing Typical Application Areas
This bearing is specifically designed for high-precision, high-rigidity applications, including:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Other precision industrial machinery requiring matched bearing sets for optimal performance.
