7002 FEGC/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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7002 FEGC/HCP4A Bearing Product Overview & Core Advantages
The 7002 FEGC/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and high-speed capability. As a single bearing designed for universal matching (SU), it enables simplified assembly of preloaded pairs for optimal rigidity. Its core advantages include superior high-speed performance enabled by a phenolic cage and ceramic balls, a P4A super-precision tolerance class for minimal runout, and the ability to handle significant combined loads due to its 18° contact angle.
7002 FEGC/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Standard bearing series designation, indicating a 15mm bore, 32mm OD, and 9mm width. |
| FE | Indicates the use of a glass fiber reinforced phenolic resin cage, which is lightweight and ideal for high-speed operation. |
| GC | Specifies a universal matchable (SU) bearing with a Moderate (Class C) preload. Two bearings can be mounted in a universal arrangement to create a preloaded set. |
| HC | Denotes the use of hybrid ceramic balls (silicon nitride), which reduce centrifugal forces, lower operating temperature, and enable higher limiting speeds. |
| P4A | Specifies a super-precision tolerance class tighter than ABEC 7, ensuring extremely low running noise and vibration for critical applications. |
7002 FEGC/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction and heat generation. This extends bearing life and allows for a limiting speed of 121,000 rpm, making it an exceptional high-speed bearing.
- Phenolic Resin Cage (FE): This lightweight and robust cage offers excellent dimensional stability and low friction at high speeds, contributing to smooth operation and reduced wear.
- High Rigidity & Load Capacity: The 18° contact angle and Moderate preload (Class C) provide high resistance to deflection, enabling the bearing to handle substantial combined radial and axial loads with precision.
- Precision & Reliability: Manufactured to P4A tolerance standards with tight dimensional controls on the bore diameter, outside diameter, and width, this bearing guarantees consistent, high-accuracy performance.
7002 FEGC/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- High-Frequency CNC Spindles for machining centers and routers
- Precision Grinding Spindles
- High-Speed Motors and Dental Handpieces
- Aerospace Instrumentation and Gyroscopes
- Semiconductor Manufacturing Equipment
