7005 ACD/P4ATBTC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7005 ACD/P4ATBTC
Basic Information
System of measurement
Metric
Weight
0.24 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
36 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
4478 lbf
Radial static load rating
3375 lbf
Limiting speed
85 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
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
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7005 ACD/P4ATBTC Bearing Product Overview & Core Advantages
The 7005 ACD/P4ATBTC is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This bearing is supplied as a matched triplex set in a back-to-back (TBT) arrangement, delivering superior stability and the ability to withstand combined radial and axial loads. With a P4A super-precision tolerance class and a moderate preload (Class C), it is engineered for high-speed operation and long-term reliability in precision machinery.
7005 ACD/P4ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| P4A | Indicates a super-precision tolerance class with running accuracy requirements tighter than ABEC 7/ISO P4. |
| TBT | Specifies a Triplex Back-to-Back matched set of three bearings, providing high moment stiffness. |
| C | Denotes a Moderate preload applied to the bearing set, enhancing rigidity and minimizing deflection under load. |
7005 ACD/P4ATBTC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The triplex back-to-back arrangement creates a statically determinate setup that significantly increases system rigidity and resistance to moment loads, making it ideal for applications requiring high positional accuracy.
- Superior Load Capacity: The 25° contact angle and robust construction using chrome steel rings and balls enable the bearing to handle significant combined radial and axial loads simultaneously.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground components and optimized internal geometry contribute to a high limiting speed of 85,000 rpm.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining precision in high-speed spindles.
7005 ACD/P4ATBTC Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles for milling, grinding, and turning centers
- High-Frequency Machining Spindles
- Precision Grinding Spindles
- High-Speed Robotic Drives
- Other precision machinery requiring high rigidity and speed
