7002 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7002 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.025 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
15 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
32 mm
Outside diameter tolerance
-0.006mm to 0
Width
9 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
4.762 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
952 lbf
Radial static load rating
412 lbf
Limiting speed
115 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 74.95
/ each
In Stock
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7002 ACE/HCP4A Bearing Product Overview & Core Advantages
The 7002 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This single-row bearing is designed to accommodate high combined loads (radial and axial) simultaneously. Its defining features include a 25° contact angle for optimal axial load capacity, a P4 (ABEC-7) tolerance class for superior running accuracy, and a phenolic resin cage enabling high-speed operation. Preloaded and pre-lubricated, it offers high rigidity and is ready for immediate installation in high-reliability systems.
7002 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series designation, indicating a 15mm bore, 32mm OD, and 9mm width. |
| ACE | Signifies a 25° contact angle and a specific internal design optimized for high-speed, high-precision performance. |
| HC | Indicates the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4A | Denotes an ABEC-7 / P4 tolerance class with specific accuracy and running characteristics, including preload. |
7002 ACE/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear. This extends bearing life and allows for higher limiting speeds (up to 115,000 rpm) compared to all-steel equivalents.
- Phenolic Resin Cage: This lightweight, high-strength cage material is essential for the bearing's high-speed capability. It offers excellent dimensional stability and low friction under high centrifugal forces.
- 25° Contact Angle & Preload: The 25° contact angle is optimized to handle significant axial loads in one direction. The application of preload eliminates internal clearance, resulting in greater stiffness, precise shaft positioning, and reduced noise and vibration.
- P4 Super-Precision: Manufactured to ABEC-7 / P4 tolerance standards, this bearing ensures minimal runout and superior rotational accuracy, which is critical for applications demanding high positional precision.
- Open & Lubricated Design: The open seal type allows for customized lubrication regimes. The bearing is supplied pre-lubricated for immediate operation within a wide temperature range of -30°C to 110°C.
7002 ACE/HCP4A Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for:
- High-Speed Machine Tool Spindles (e.g., milling, grinding, and drilling)
- Precision Robotics and Automation Arms
- High-Frequency Spindles for PCB drilling and routing
- Medical and Dental Handpieces
- Aerospace Instrumentation and Guidance Systems
- High-Performance Electric Motors
