7014 CBGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7014 CBGA/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
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
28
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4275 lbf
Radial static load rating
3668 lbf
Limiting speed
29 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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 CBGA/HCP4A Bearing Product Overview & Core Advantages
The 7014 CBGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and rotational stability. Its 15° contact angle and ceramic ball construction make it ideally suited for handling combined loads, particularly high-speed applications where rigidity and minimal thermal expansion are critical. As a Universal Matchable (SU) bearing, it can be pre-set in pairs to achieve specific preload and performance characteristics, offering engineers significant design flexibility.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7014 | Basic bearing series and size designation (70mm bore, 110mm OD, 20mm width). |
| C | 15° nominal contact angle. |
| BGA | Precision ground bearings, universal match design. |
| HC | Hybrid Ceramic construction (Steel rings with Ceramic balls). |
| P4A | High precision tolerance class (superior to ABEC 7). |
7014 CBGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls (typically Silicon Nitride) significantly reduces weight, centrifugal force, and friction, enabling higher limiting speeds (29,000 rpm). This construction also provides superior electrical insulation, reduced thermal expansion, and extended service life.
- High Rigidity & Load Capacity: The angular contact design and P4A precision tolerances provide excellent high rigidity support, effectively managing both radial and axial loads. The Extra light (Class A) preload ensures smooth, precise operation with minimal runout.
- Phenolic Cage: The phenolic cage offers high strength-to-weight ratio, excellent dimensional stability, and is well-suited for high-speed operation, contributing to the bearing's overall high-speed performance.
- Universal Matching: The Universal Matchable (SU) feature allows two bearings to be mounted together as a pre-adjusted set, simplifying installation and ensuring consistent, optimized preload for maximum system performance.
7014 CBGA/HCP4A Bearing Typical Application Areas
This precision bearing is engineered for high-performance machinery where speed, accuracy, and reliability are paramount. Key applications include:
- High-Frequency Machine Tool Spindles
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace & Defense Systems
- Semiconductor Manufacturing Equipment
- Medical and Laboratory Instrumentation
