7003 ACD/P4ADBB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7003 ACD/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
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2385 lbf
Radial static load rating
1395 lbf
Limiting speed
115 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
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In Stock
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7003 ACD/P4ADBB Bearing Product Overview & Core Advantages
The 7003 ACD/P4ADBB is a precision duplex angular contact ball bearing specifically designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Light / Class B standards, providing superior stability and resistance to complex combined loads. Its compact design, featuring a 17mm bore and 35mm outside diameter, makes it ideal for high-precision, space-constrained machinery where high rigidity and reliable performance are critical.
7003 ACD/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic bearing series, indicating a 17mm bore, 35mm OD, and 20mm width. |
| AC | Angular Contact design with a 25° contact angle for handling combined radial and axial loads. |
| D | Duplex (Two bearings in a set). |
| P4A | High precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
| DB | Back-to-Back mounting arrangement, which provides high moment rigidity. |
| B | Light preload classification. |
7003 ACD/P4ADBB Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement and light preload create a highly rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: The angular contact design with a 25° contact angle enables the bearing to support significant combined radial and axial loads simultaneously.
- Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is essential for high-speed and high-accuracy applications.
- Optimized High-Speed Operation: The phenolic cage is lightweight and robust, contributing to lower friction and enabling a high limiting speed of 115,000 rpm. The bearings are pre-lubricated for immediate operation.
- Durable Construction: Made from chrome steel for both rings and balls, ensuring high durability and long service life under demanding conditions.
7003 ACD/P4ADBB Bearing Typical Application Areas
This precision duplex bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Medical and Dental Handpieces
- Robotic Drives and Servo Motors
- Aerospace Control Systems
