S7003 ACD/P4ADBA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7003 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.076 kg
Tolerance class
P4A
Seal type
Sealed
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
103 X 1000 rpm
Lubrication
Grease
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
Price available upon request.
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S7003 ACD/P4ADBA Bearing Product Overview & Core Advantages
The S7003 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched set, arranged in a Back-to-Back (DB) duplex configuration, is engineered to handle combined loads—simultaneously supporting substantial radial loads and axial loads from both directions. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy, making it ideal for high-speed and high-precision machinery where operational reliability is paramount.
S7003 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| ACD | Angular Contact, Duplex (Matched Set) | Indicates a pre-matched pair of angular contact bearings designed to work together as a single unit. |
| P4A | High Precision Tolerance Class | Denotes extremely tight dimensional and running accuracy tolerances, superior to ABEC 7 (P4). |
| DB | Back-to-Back Arrangement | The two bearings are mounted with their back faces together, providing high moment rigidity. |
S7003 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The Back-to-Back (DB) duplex arrangement creates a wide effective spread, significantly increasing the bearing set's resistance to moment loads and providing exceptional system rigidity.
- Superior Load Handling: With a 25° contact angle and a dynamic load rating of 2385 lbf, this bearing set is optimized to manage combined radial and bidirectional axial loads efficiently.
- Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the P4A precision and optimized internal geometry contribute to smooth operation and a high limiting speed of 103,000 rpm.
- Sealed & Pre-Lubricated for Longevity: The sealed design effectively excludes contaminants. Pre-lubricated with grease, it offers a wide operating temperature range from -30°C to 110°C, ensuring long service life with minimal maintenance.
S7003 ACD/P4ADBA Bearing Typical Application Areas
This precision bearing set is ideally suited for demanding applications in:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Motors and Spindles
- Medical and Dental Equipment (e.g., high-speed handpieces)
- Aerospace Actuation Systems
