7014 ACBGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7014 ACBGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.63 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
20 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4095 lbf
Radial static load rating
3510 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7014 ACBGA/HCP4A Bearing Product Overview & Core Advantages
The 7014 ACBGA/HCP4A is a single row angular contact ball bearing engineered for the most demanding high-precision and high-speed applications. Its defining characteristics include a 25° contact angle and a P4A super-precision tolerance class, ensuring exceptional running accuracy and rotational stability. The bearing is preloaded to Extra light (Class A) standards, providing high system rigidity with minimal friction. Featuring a phenolic resin cage and ceramic balls, it is optimized for superior performance at high rotational speeds, making it an ideal solution for machine tool spindles and other precision machinery where high rigidity and low heat generation are critical.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7014 | Basic bearing series and size designation (70mm Bore, 110mm OD, 20mm Width). |
| AC | Angular Contact design. |
| BGA | Designates a Universal Matchable (SU) bearing, which can be mounted in various preload configurations (back-to-back, face-to-face, tandem) with other bearings from the same manufactured lot. |
| HC | Indicates the use of Hybrid Ceramic components (Ceramic balls with steel rings). |
| P4A | Specifies the tolerance class, which is superior to ABEC-7/ISO P4, ensuring extremely tight dimensional and running accuracy tolerances. |
7014 ACBGA/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic (Si3N4) balls significantly reduces centrifugal forces, enabling a high limiting speed of 36,000 rpm. This hybrid construction also minimizes heat buildup.
- High Rigidity and Precision: The 25° contact angle and Class A preload provide high axial and radial stiffness, essential for maintaining precision under combined loads. The P4A tolerance class guarantees minimal runout and vibration.
- Universal Matching Design: As a Universal Matchable (SU) bearing, the 7014 ACBGA/HCP4A can be supplied in sets (typically 2 or more) from the same manufacturing batch. This allows for precise preload control when mounted in pairs (DB, DF, DT), simplifying assembly and optimizing spindle performance.
- Open Design with Premium Lubrication: The open seal type allows for custom lubrication schemes. The bearing is supplied pre-lubricated with a high-performance grease suitable for the specified temperature range.
7014 ACBGA/HCP4A Bearing Typical Application Areas
This precision angular contact bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- High-Frequency Machining Spindles: Where extreme rotational accuracy and speed are paramount.
- Precision Robotics: Arm joints and spindle drives requiring high rigidity and responsiveness.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
- Medical Equipment: Dental handpieces and high-speed surgical drills.
