7005 CDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7005 CDGC/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
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
3
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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7005 CDGC/P4A Bearing Product Overview & Core Advantages
The 7005 CDGC/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with a 15° contact angle, it excels at supporting combined loads, effectively managing both radial forces and thrust loads in one direction. Manufactured to the stringent P4A tolerance class, this bearing offers superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery. Its moderate preload (Class C) ensures optimal stiffness and minimizes deflection under operational stresses.
7005 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
The model number 7005 CDGC/P4A provides detailed technical specifications:
- 7005: Basic designation indicating a 25mm bore, 47mm OD, and 12mm width.
- C: Denotes a 15° contact angle.
- DG: Stands for Duplex, Ground Back-to-Back preload configuration.
- C: Indicates the moderate preload (Class C).
- P4A: Specifies the tolerance class, representing superior dimensional and running accuracy exceeding ABEC 7 standards.
7005 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The ground back-to-back (DB) arrangement and moderate preload provide a very stiff bearing system that resists operational deflection, crucial for maintaining precision in machine tool spindles.
- Optimized Load Capacity: The 15° contact angle is engineered to handle significant combined radial and axial loads simultaneously.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 56,000 rpm. The bearing is supplied lubricated for immediate use.
- Universal Matching Capability (SU): This bearing is universally matchable, allowing any number of bearings to be paired in a back-to-back (DB) arrangement without selective mounting, simplifying installation and inventory.
7005 CDGC/P4A Bearing Typical Application Areas
The 7005 CDGC/P4A is specified for high-performance applications where precision and speed are critical. Its primary uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors requiring high rotational accuracy.
- Medical Equipment: High-speed handpieces and dental drills.
