7014 ACB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7014 ACB/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
1.25 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
7.938 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
6660 lbf
Radial static load rating
6975 lbf
Limiting speed
36 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
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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7014 ACB/HCP4ADGA Bearing Product Overview & Core Advantages
The 7014 ACB/HCP4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate combined loads—handling significant radial loads and axial loads in one direction simultaneously. Its construction with a Phenolic cage and ceramic balls contributes to lower friction, reduced weight, and superior performance at high rotational speeds. This bearing is pre-lubricated and classified under the stringent P4A tolerance class, making it an ideal choice for high-rigidity, high-reliability spindle arrangements.
7014 ACB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix / Prefix | Technical Meaning | Advantage |
|---|---|---|
| 7014 | Basic bearing series, defining the standard boundary dimensions: 70mm Bore, 110mm OD, 40mm Width. | Standardized sizing for easy integration and replacement. |
| ACB | Angular Contact Bearing design with a 25° contact angle. | Optimized for handling high axial loads in one direction in combination with radial loads. |
| HC | Hybrid Ceramic, indicating the use of ceramic balls. | Reduced friction, lower operating temperature, higher limiting speed, and extended service life. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards. | Ensures ultra-precise running accuracy, minimal vibration, and superior performance in high-speed spindles. |
| DGA | Universal Matchable (SU) bearing in a Duplex arrangement with Extra Light (A) preload. | Simplifies mounting, provides immediate rigidity, and controls axial and radial play for optimal precision. |
7014 ACB/HCP4ADGA Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, lowers friction, and allows for a higher limiting speed (36,000 rpm). This construction also provides non-conductive properties and superior performance in lubricant-starved conditions.
- High Rigidity & Load Capacity: The angular contact design with a 25° contact angle and the duplex preload create a system with high rigidity, capable of supporting substantial radial dynamic load ratings (6660 lbf) and static load ratings (6975 lbf).
- Optimized High-Speed Performance: The lightweight Phenolic (resin) cage is engineered for high-speed stability and reduced cage wear. Combined with the hybrid ceramic design, it enables smooth operation at extreme rotational speeds.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls on bore, outside diameter, and width, ensuring predictable and precise performance in the most demanding applications.
7014 ACB/HCP4ADGA Bearing Typical Application Areas
The 7014 ACB/HCP4ADGA is ideally suited for high-performance machinery where speed, precision, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors operating at very high RPM.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
