7003 CE/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7003 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.07 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
2151 lbf
Radial static load rating
1148 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
Extra light / Class A
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
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7003 CE/P4ADBA Bearing Product Overview & Core Advantages
The 7003 CE/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and can accommodate combined loads (radial and axial loads simultaneously). Manufactured to P4A tolerance class, it offers extremely tight dimensional and running accuracy, making it ideal for high-precision, high-rigidity applications such as machine tool spindles. The pre-lubricated design and phenolic cage contribute to its reliable performance.
7003 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
The model number 7003 CE/P4ADBA is decoded as follows:
- 7003: Basic series designation, indicating a 17mm bore, 35mm OD, and 20mm width.
- C: Denotes a 15° contact angle, optimized for high-speed operation.
- E: Indicates enhanced internal design for improved performance.
- P4A: The tolerance class, specifying very high precision for dimensional and running accuracy.
- DB: Signifies the bearings are supplied as a Duplex Back-to-Back matched set.
- A: Indicates an Extra Light preload is applied to the set.
7003 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back (DB) duplex arrangement creates a wide effective spread, significantly increasing system rigidity and moment load capacity, which is critical for maintaining precision under operational stresses.
- Superior Precision: The P4A tolerance class ensures minimal runout and vibration, enabling smooth, accurate rotation essential for high-speed spindles and precision instruments.
- Optimized for High Speeds: The 15° contact angle and lightweight phenolic resin cage reduce centrifugal forces and friction, allowing for a high limiting speed of 115,000 rpm.
- Durability and Reliability: Manufactured from chrome steel for both rings and balls, the bearing provides high fatigue life. The phenolic cage offers excellent strength and lubrication compatibility.
7003 CE/P4ADBA Bearing Typical Application Areas
This high-precision duplex bearing is ideally suited for:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Grinding Equipment
- High-Frequency Motors
- Medical and Dental Handpieces
- Aviation and Aerospace Instrumentation
