7005 CD/P4AH
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7005 CD/P4AH
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
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2151 lbf
Radial static load rating
1170 lbf
Limiting speed
56 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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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7005 CD/P4AH Bearing Product Overview & Core Advantages
The 7005 CD/P4AH is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional rotational accuracy. As a universal matching bearing supplied in a pre-loaded set of two, it is designed to accommodate combined loads—significant radial loads and axial loads in one direction simultaneously. Its P4A tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other precision machinery where high rigidity and minimal runout are critical.
7005 CD/P4AH Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Basic bearing series and size designation (25mm bore, 47mm OD). |
| CD | Indicates a universal matching design. Two bearings are supplied as a set with a specific preload and can be arranged in various configurations (back-to-back, face-to-face, or tandem). |
| P4A | Denotes a high-precision tolerance class superior to ABEC 7, with very tight limits on bore, outside diameter, width, and running accuracy. |
| H | Signifies that the bearing is supplied with a preload applied, ensuring immediate high rigidity and optimal performance upon installation. |
7005 CD/P4AH Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and phenolic cage contribute to high-speed capability and thermal stability. The P4A precision and applied preload guarantee exceptional system stiffness and minimal deflection under load.
- Superior Load Capacity: The optimized internal geometry allows it to handle high radial dynamic load ratings (2151 lbf) and substantial one-direction axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, enabling a high limiting speed of 56,000 rpm. The standard lubrication is suitable for this high-speed operation.
- Pre-Configured for Performance: Being a universal matching set with preload eliminates complex calculations and adjustments during assembly, ensuring consistent, high-performance operation from the start.
7005 CD/P4AH Bearing Typical Application Areas
This bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, precision grinding, and other applications requiring extreme accuracy.
- High-Frequency Motors: Spindles for routers and small high-speed motors.
- Medical Equipment: High-speed handpieces and dental drills.
