7003 ACE/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7003 ACE/HCP4A
Basic Information
System of measurement
Metric
Weight
0.03 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
17 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
35 mm
Outside diameter tolerance
-0.006mm to 0
Width
10 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
5.556 mm
Ball quantity
12
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
1258 lbf
Radial static load rating
551 lbf
Limiting speed
103 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:
$ 84.68
/ each
In Stock
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7003 ACE/HCP4A Bearing Product Overview & Core Advantages
The 7003 ACE/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and high-speed capability. This single-row bearing is designed to accommodate combined loads (radial and axial) simultaneously, with the axial load carrying capacity being significantly influenced by its 25° contact angle. Its defining features include a P4 (ABEC-7) tolerance class for superior running accuracy, a phenolic resin cage for reduced weight and high-speed operation, and ceramic balls that minimize friction and heat generation. This combination makes it an ideal solution for high-rigidity and high-speed spindle systems.
7003 ACE/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7003 | Standard bearing series designation indicating a 17mm bore, 35mm OD, and 10mm width. |
| ACE | Signifies a 25° contact angle and the availability of a preload for enhanced system rigidity. |
| HCP4A | Indicates the P4 (ABEC-7) tolerance class for ultra-precision, along with specific internal design optimizations for high performance. |
7003 ACE/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance & Thermal Stability: The lightweight phenolic cage and low-density ceramic balls (Si3N4) work in tandem to reduce centrifugal forces and inertial drag, enabling the bearing to achieve a high limiting speed of 103,000 rpm. Ceramic balls also exhibit superior thermal stability, minimizing thermal expansion and maintaining preload under high-speed conditions.
- High Rigidity & Load Capacity: The 25° contact angle is optimized to handle significant axial loads in one direction, in addition to radial loads. The availability of preload further increases system stiffness, reduces vibration, and improves rotational accuracy.
- Extended Service Life & Reliability: Ceramic balls are electrically insulating, harder, and smoother than steel, leading to dramatically reduced wear, lower friction, and longer service life, especially in challenging environments.
- Precision Engineering: Manufactured to a P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring the highest levels of precision and surface finish.
7003 ACE/HCP4A Bearing Typical Application Areas
- High-Frequency Machine Tool Spindles: For CNC milling, grinding, and drilling where high speed, rigidity, and accuracy are paramount.
- Precision Instrumentation: Used in high-resolution scanners, coordinate measuring machines (CMM), and optical systems.
- High-Speed Motors and Turbomachinery: Ideal for spindles in routers, dental handpieces, and small-scale turbines.
- Aerospace and Semiconductor Manufacturing Equipment: Where reliability, high-speed operation, and minimal particle generation are critical.
