7001 ACD/P4ADBC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7001 ACD/P4ADBC
Basic Information
System of measurement
Metric
Weight
0.042 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
12 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
28 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
10
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
1580 lbf
Radial static load rating
821 lbf
Limiting speed
110 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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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7001 ACD/P4ADBC Bearing Product Overview & Core Advantages
The 7001 ACD/P4ADBC is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement bearing set is preloaded to Moderate / Class C specifications, delivering superior system stiffness and minimal axial/radial runout. Its P4A tolerance class ensures ultra-precise dimensional and running accuracy, making it ideal for high-speed spindles and other demanding machinery where high rigidity and positional accuracy are critical. The matched set is supplied lubricated and ready for installation.
7001 ACD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7001 | Basic bearing series, indicating a 12mm bore, 28mm OD, and 16mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Duplex (Two bearings as a set). |
| P4A | High precision tolerance class (equivalent to ABEC 7), defining very tight limits on bore, OD, width, and running accuracy. |
| DBC | Specifics of the duplex back-to-back (DB) arrangement with a Moderate (Class C) preload. |
7001 ACD/P4ADBC Bearing Structural Features & Performance Benefits
- Duplex Back-to-Back (DB) Design & Preload: The two bearings are mounted back-to-back and preloaded, creating a rigid bearing system that effectively resists moment loads and provides exceptional operational stability. This configuration is crucial for applications requiring high system rigidity.
- High-Speed Capability: The phenolic cage offers excellent strength-to-weight ratio and operates smoothly at the high limiting speed of 110,000 rpm. The 25° contact angle provides a balanced capability for handling combined radial and axial loads at high speeds.
- Superior Load Capacity: Manufactured from chrome steel for both rings and balls, this bearing achieves a high dynamic load rating of 1580 lbf and a static load rating of 821 lbf, ensuring long service life under demanding conditions.
- Precision Performance: The P4A tolerance class guarantees minimal runout and precise dimensional conformity, which is essential for maintaining accuracy in high-precision machinery.
7001 ACD/P4ADBC Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Handpieces
- Aerospace Instrumentation
