7014 ACD/PA9ATBTC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7014 ACD/PA9ATBTC
Basic Information
System of measurement
Metric
Weight
1.79 kg
Tolerance class
PA9A
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
60 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
23850 lbf
Radial static load rating
29700 lbf
Limiting speed
29 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
Moderate / Class C
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/PA9ATBTC Bearing Product Overview & Core Advantages
The 7014 ACD/PA9ATBTC is a precision angular contact ball bearing supplied as a matched triplex set in a back-to-back (TBT) arrangement. Engineered for applications demanding exceptional rigidity and accuracy, this bearing is designed to handle combined loads (radial and axial) simultaneously. Its PA9A tolerance class and moderate preload (Class C) ensure high running accuracy and stable performance in high-speed and high-precision environments. The phenolic cage contributes to smooth operation at elevated speeds.
7014 ACD/PA9ATBTC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7014 A | Basic bearing designation with a 25° contact angle. |
| C | Indicates a moderate preload (Class C) for enhanced rigidity. |
| D | Signifies the bearing is part of a matched set. |
| PA9A | Denotes a high-precision tolerance class for superior dimensional and running accuracy. |
| TBT | Specifies the Triplex Back-to-Back arrangement of the three bearings in the set. |
| C (at the end) | Reiterates the moderate preload (Class C) applied to the entire matched set. |
7014 ACD/PA9ATBTC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The triplex back-to-back arrangement creates a highly rigid bearing system capable of supporting significant combined radial and axial loads from both directions. The 25° contact angle is optimized for axial load carrying capacity.
- Precision & High-Speed Performance: Manufactured to PA9A tolerance class standards, this bearing ensures minimal runout and vibration. The lightweight phenolic cage is ideal for high-speed applications, reducing centrifugal forces and allowing a limiting speed of 29,000 rpm. The bearings are pre-lubricated for immediate operation.
- Matched Set Consistency: The three bearings are precision-matched as a set (Number of bearings in matched set: 3), guaranteeing uniform preload and performance, which is critical for the stability of the entire spindle or assembly.
- Durable Construction: Made from chrome steel for both rings and balls, providing high wear resistance and longevity. The open seal type allows for custom lubrication regimes suited to specific operational needs.
7014 ACD/PA9ATBTC Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery requiring extreme precision and stiffness, such as:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Frequency Spindles
- Precision Gearboxes
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Axes
