7014 ACD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7014 ACD/P4ADBA
Basic Information
System of measurement
Metric
Weight
1.19 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
70 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
110 mm
Outside diameter tolerance
-0.004mm to 0
Width
40 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
12.7 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
17842 lbf
Radial static load rating
19462 lbf
Limiting speed
29 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
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In Stock
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7014 ACD/P4ADBA Bearing Product Overview & Core Advantages
The 7014 ACD/P4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. This back-to-back (DB) matched pair is preloaded to Extra Light (Class A) specifications, ensuring minimal axial and radial play for superior system stability. Its primary advantage lies in its ability to handle combined loads—significant radial loads alongside substantial axial loads in both directions—making it an ideal choice for high-precision, high-rigidity spindles and machinery.
7014 ACD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7014 | Basic bearing series, indicating a 70mm bore, 110mm OD, and 40mm width. |
| AC | Angular Contact design with a 25° contact angle for optimal axial load capacity. |
| D | Duplex (two bearings) configuration. |
| DB | Matched arrangement in a Back-to-Back orientation, which provides high moment rigidity. |
| P4A | Indicates a high-precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
7014 ACD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex design and Class A preload create a highly rigid bearing system that effectively resists moment loads and deflection, crucial for maintaining precision under heavy combined loads.
- Superior Load Capacity: Engineered with a 25° contact angle and high-grade chrome steel components, this bearing offers high dynamic and static load ratings (17,842 lbf dynamic, 19,462 lbf static), reliably supporting complex load conditions.
- High-Speed Capability: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 29,000 rpm, making it suitable for high-speed spindle applications.
- Precision Performance: Manufactured to P4A tolerance class with extremely tight bore, OD, and width tolerances, this bearing guarantees exceptional running accuracy, low vibration, and consistent performance in the most demanding precision machinery.
7014 ACD/P4ADBA Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and milling spindles requiring high speed, rigidity, and precision.
- High-Frequency Motors: Spindles for PCB drilling and high-speed electric motors.
- Precision Rotary Systems: Indexing tables, rotary actuators, and measuring instruments.
- Agricultural Machinery: High-performance PTO shafts and transmission systems.
