7003 ACD/P4ATBTA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7003 ACD/P4ATBTA
Basic Information
System of measurement
Metric
Weight
0.11 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
30 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
3150 lbf
Radial static load rating
2092 lbf
Limiting speed
70 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
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 ACD/P4ATBTA Bearing Product Overview & Core Advantages
The 7003 ACD/P4ATBTA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This bearing is supplied as a triplex back-to-back (TBT) matched set, enabling it to handle significant combined loads—high radial loads and thrust loads in both directions. Manufactured to a P4A tolerance class, it guarantees superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery. Its compact design and preloaded configuration deliver immediate high stiffness and precise shaft positioning.
7003 ACD/P4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Basic bearing series, indicating a 17 mm bore, 35 mm OD, and 10 mm width per bearing. |
| AC | Angular Contact design with a 25° contact angle. |
| D | The bearing is supplied with a specific preload (Extra light / Class A). |
| P4A | Indicates a high-precision tolerance class for superior running accuracy. |
| TBT | Specifies the Triplex Back-to-Back matched arrangement of three bearings. |
| A | Denotes the specific preload class (Extra light). |
7003 ACD/P4ATBTA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The triplex back-to-back arrangement creates a highly rigid bearing system capable of supporting substantial combined radial and axial loads from both directions. The 25° contact angle is optimized for high thrust capacity.
- Precision & High-Speed Performance: The P4A tolerance class ensures minimal runout and smooth operation. The lightweight phenolic cage and optimized internal geometry contribute to a high limiting speed of 70,000 rpm, making it a true high-speed bearing.
- Optimized Internal Geometry: Constructed with 12 precision balls of 5.556 mm diameter, the bearing is engineered for smooth operation and long service life under demanding conditions.
- Ready-to-Install Performance: The set is pre-lubricated and comes with a defined preload, ensuring immediate high performance and simplified installation without the need for initial adjustment.
7003 ACD/P4ATBTA Bearing Typical Application Areas
This bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling machines and high-frequency motor spindles.
- Robotics: High-accuracy joints and arm assemblies.
- Medical Equipment: Dental handpieces and surgical drill spindles.
