7005 CD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7005 CD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.16 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
24 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
3510 lbf
Radial static load rating
2340 lbf
Limiting speed
103 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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 CD/P4ADBC Bearing Product Overview & Core Advantages
The 7005 CD/P4ADBC is a precision duplex angular contact ball bearing set designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Moderate / Class C specifications, ensuring high system stiffness and minimal axial/radial runout. Its fundamental advantage lies in its ability to handle combined loads—simultaneously supporting substantial radial forces and bidirectional axial thrust. Manufactured to a P4A tolerance class, this bearing is engineered for high-speed operation and is ideal for high-precision, high-reliability machinery where performance consistency is critical.
7005 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
The model number 7005 CD/P4ADBC provides a detailed technical specification:
- 7005: Basic bearing series, indicating a 25mm bore, 47mm outside diameter.
- C: Denotes a 15° contact angle, optimized for high-speed performance and moderate axial load capacity.
- D: Indicates the bearing is part of a duplex pair.
- P4A: Specifies the tolerance class, representing very high precision for both dimension and running accuracy.
- DB: Defines the matched arrangement as Back-to-Back. This configuration provides high moment rigidity and excellent stability under complex loads.
- Open / Lubricated: The bearing is supplied with lubrication but features an open (non-shielded) design, typically for systems with centralized lubrication.
7005 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists overturning moments, making it exceptionally stable under complex loading conditions.
- Superior Load Capacity: The angular contact design with a 15° contact angle enables the bearing to efficiently carry significant combined radial and axial loads from both directions.
- Precision & High-Speed Performance: Built to P4A tolerance class with a phenolic resin cage, this bearing ensures smooth operation, low vibration, and low heat generation at high rotational speeds, with a limiting speed of 103,000 rpm.
- Optimized Material Selection: Components made from chrome steel for both rings and balls provide high hardness, wear resistance, and long service life. The phenolic cage is lightweight and robust, ideal for high-speed applications.
7005 CD/P4ADBC Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Gearboxes and High-Frequency Motors.
- Industrial Pumps and Compressors that operate at high rotational speeds.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and other critical navigation/positioning systems.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
