7014 ACD/P4ADBD
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7014 ACD/P4ADBD
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
Heavy / Class D
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/P4ADBD Bearing Product Overview & Core Advantages
The 7014 ACD/P4ADBD is a precision duplex angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This back-to-back (DB) matched pair is preloaded to Class D (Heavy), providing superior system stiffness and minimal axial/radial runout. Its primary advantage lies in its ability to handle combined loads—significant radial and bidirectional axial loads—simultaneously, making it ideal for high-precision, high-rigidity machinery where rotational accuracy is paramount.
7014 ACD/P4ADBD 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 arrangement, specifically Back-to-Back (DB) mounting. |
| P4A | Indicates an ultra-high precision tolerance class (superior to ABEC 7), ensuring minimal dimensional runout. |
| DB | Confirms the Back-to-Back (DB) matched set configuration of two bearings. |
7014 ACD/P4ADBD Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The back-to-back duplex arrangement and heavy preload (Class D) create a rigid bearing system that effectively resists moment loads and deflection, crucial for maintaining precision under heavy combined loads.
- Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing delivers high radial dynamic load rating (17,842 lbf) and static load rating (19,462 lbf), reliably managing demanding load conditions.
- High-Speed Capability: The lightweight, durable phenolic resin cage and precision-ground chrome steel components enable stable operation at high speeds, with a limiting speed of 29,000 rpm.
- Precision Performance: Manufactured to P4A tolerance class, this bearing guarantees extremely tight dimensional control (bore/OD tolerance: -0.004mm to 0), resulting in exceptional running accuracy and low vibration for sensitive applications.
7014 ACD/P4ADBD Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision, rigidity, and speed are critical. Key applications include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Gearboxes: Especially in robotics and high-torque transmission systems.
- Industrial Pumps & Compressors: Where reliable operation under combined loads is required.
- Aerospace & Defense Systems: In gyroscopes, radar equipment, and other precision instrumentation.
