7003 CD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7003 CD/P4ADBB
Basic Information
System of measurement
Metric
Weight
0.076 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.004mm to 0
Width
20 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2498 lbf
Radial static load rating
1474 lbf
Limiting speed
121 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
Light / Class B
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.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7003 CD/P4ADBB Bearing Product Overview & Core Advantages
The 7003 CD/P4ADBB is a precision duplex pair of angular contact ball bearings designed for applications demanding exceptional rotational accuracy and rigidity. This back-to-back (DB) matched set is preloaded to Light / Class B specifications, ensuring optimal stiffness and minimal axial/radial runout right from installation. Its primary advantage lies in its ability to handle combined loads—significant radial loads along with thrust loads in both directions—making it an ideal choice for high-precision, high-speed spindles and other critical machinery components where rigidity and running accuracy are paramount.
7003 CD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic bearing designation; 17 mm bore, 35 mm OD, 20 mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate thrust capacity. |
| D | Indicates the bearings are supplied as a Duplex pair. |
| P4A | Denotes a high-precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DB | Specifies the Back-to-Back mounting arrangement, which provides high moment rigidity. |
| B | Indicates the Light preload level applied to the matched set. |
7003 CD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Running Accuracy: The back-to-back duplex arrangement creates a wide, rigid support system that effectively resists moment loads and ensures exceptional shaft positioning accuracy. The Light preload eliminates internal clearance, enhancing system stiffness and damping characteristics.
- Superior Load Capacity: The angular contact design with a 15° contact angle enables the bearing to support substantial combined radial and axial loads simultaneously.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces and ensures stable operation at the high limiting speed of 121,000 rpm. The 15° contact angle further contributes to lower heat generation at high speeds.
- Precision Engineering: Manufactured to P4A tolerance class with extremely tight bore, OD, and width tolerances, this bearing guarantees consistent, high-precision performance in the most demanding applications.
- Material Quality: Components made from high-grade chrome steel provide excellent wear resistance and long service life.
7003 CD/P4ADBB Bearing Typical Application Areas
This precision bearing set is engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Systems: CNC indexing heads, rotary tables, and robotic arm joints.
- High-Frequency Motors & Spindles: Where minimal runout and high rigidity are critical.
- Medical & Laboratory Equipment: Centrifuges and other precision instruments.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and navigation equipment.
